EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR RULE 15d-14(a)
OF THE SECURITIES EXCHANGE ACT OF 1934
AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Dean L. Cash, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ATEL Growth Capital Fund 8, LLC;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 13, 2013

/s/ Dean L. Cash

Dean L. Cash
Chairman of the Board, President and
Chief Executive Officer of
AGC 8 Managing Member, LLC (Managing Member)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR RULE 15d-14(a)
OF THE SECURITIES EXCHANGE ACT OF 1934
AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Paritosh K. Choksi, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ATEL Growth Capital Fund 8, LLC;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 13, 2013

/s/ Paritosh K. Choksi

Paritosh K. Choksi
Director, Executive Vice President and
Chief Financial Officer and Chief Operating Officer of
AGC 8 Managing Member, LLC (Managing Member)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. §1350,
AS ADOPTED PURSUANT TO
§906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ATEL Growth Capital Fund 8, LLC (the “Company”) on Form 10-Q for the period ended September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dean L. Cash, Chairman of the Board, President and Chief Executive Officer of AGC 8 Managing Member, LLC, Managing Member of the Company, hereby certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 13, 2013

/s/ Dean L. Cash

Dean L. Cash
Chairman of the Board, President and
Chief Executive Officer of
AGC 8 Managing Member, LLC
(Managing Member)

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. §1350,
AS ADOPTED PURSUANT TO
§906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ATEL Growth Capital Fund 8, LLC (the “Company”) on Form 10-Q for the period ended September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Paritosh K. Choksi, Director, Executive Vice President and Chief Financial Officer and Chief Operating Officer of AGC 8 Managing Member, LLC, Managing Member of the Company, hereby certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 13, 2013

/s/ Paritosh K. Choksi

Paritosh K. Choksi
Director, Executive Vice President and
Chief Financial Officer and Chief Operating Officer of
AGC 8 Managing Member, LLC
(Managing Member)

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

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Notes Receivable, Net (Tables)

9 Months Ended

Sep. 30, 2013

Notes Receivables, Net [Abstract]

Minimum Future Payments Receivable

As of September 30, 2013, the minimum future payments receivable are as follows:

Three months ending December 31, 2013	$	176,252
Year ending December 31, 2014		806,323
2015		823,117
2016		558,890
		2,364,582
Less: portion representing unearned interest income, net		(406,682)
Less: advance payments		(6,388)
Notes receivable, net	$	1,951,512

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Statements of Changes in Members' Capital (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Beginning Balance		$ 863,574	$ 500
Capital contributions	1,353,340	6,039,550	1,872,760
Rescissions of Units	(385)	(5,320)
Distributions to Other Members	(523,676)	(757,297)	(23,550)
Distributions to Managing Member		(88,192)	(2,617)
Net (loss) income	72,289	(27,594)	(15,231)
Ending Balance	4,927,623	4,927,623	863,574
Other Members [Member]
Beginning Balance (in units)		187,326	50
Beginning Balance		863,574
Capital contributions		6,039,550	1,872,760
Capital contributions (in units)		603,955	187,276
Rescissions of Units		(5,320)
Rescissions of Units (in units)		(550)
Distributions to Other Members		(757,297)	(23,550)
Net (loss) income		(115,786)	(17,348)
Ending Balance (in units)	790,731	790,731	187,326
Ending Balance	4,927,623	4,927,623	863,574
Managing Member [Member]
Beginning Balance			500
Distributions to Managing Member		(88,192)	(2,617)
Net (loss) income		88,192	2,117
Selling Commissions To Affiliates [Member]
Organization and offering costs		(543,065)	(168,503)
Selling Commissions To Affiliates [Member] | Other Members [Member]
Organization and offering costs		(543,065)	(168,503)
Syndication Costs [Member]
Organization and offering costs		(554,033)	(799,785)
Syndication Costs [Member] | Other Members [Member]
Organization and offering costs		$ (554,033)	$ (799,785)

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Related Party Transactions

9 Months Ended

Sep. 30, 2013

Related Party Transactions [Abstract]

Related Party Transactions

4.  Related party transactions:

The terms of the Operating Agreement provide that the Managing Member and/or affiliates are entitled to receive certain fees for equipment management and resale and for management of the Company.

The Operating Agreement allows for the reimbursement of costs incurred by the Managing Member and/or affiliates for providing administrative services to the Company. Administrative services provided include Company accounting, investor relations, legal counsel and equipment financing documentation. The Managing Member is not reimbursed for services whereby it is entitled to receive a separate fee as compensation for such services, such as management of investments.

Cost reimbursements to the Managing Member or its affiliates are based on its costs incurred in performing administrative services for the Company. These costs are allocated to each managed entity based on certain criteria such as total assets, number of investors or contributed capital based upon the type of cost incurred. The Managing Member believes that the costs reimbursed are the lower of (i) actual costs incurred on behalf of the Company or (ii) the amount the Company would be required to pay independent parties for comparable administrative services in the same geographic location.

During the three and nine months ended September 30, 2013, the Managing Member and/or affiliates earned commissions, fees and reimbursements pursuant to the Operating Agreement as follows:

		For the Three Months Ended September 30, 2013		For the Nine Months Ended September 30, 2013
Selling commissions, equal to 9% of the selling price of the Limited Liability Company Units, deducted from Other Members' capital	$	121,801	$	543,065
Reimbursement of other syndication costs to Managing Member and/or affiliates, deducted from Other Members' capital		157,733		554,033
Administrative costs reimbursed to Managing Member and/or affiliates		16,326		41,659
Asset management fees to Managing Member		4,282		10,820
Acquisition costs and note origination fees paid to Managing Member		47,202		205,213
	$	347,344	$	1,354,790

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Notes Receivable, Net (Minimum Future Payments Receivable) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Notes Receivables, Net [Abstract]
Three months ending December 31, 2013	$ 176,252
Year ending December 31, 2014	806,323
2015	823,117
2016	558,890
Notes receivable, gross	2,364,582
Less: portion representing unearned interest income, net	(406,682)
Less: advance payments	(6,388)
Notes receivable, net	$ 1,951,512	$ 1,313,139

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Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2013

Related Party Transactions [Abstract]

Affiliates Earned Commissions and Billed for Reimbursements Pursuant to Operating Agreement

During the three and nine months ended September 30, 2013, the Managing Member and/or affiliates earned commissions, fees and reimbursements pursuant to the Operating Agreement as follows:

		For the Three Months Ended September 30, 2013		For the Nine Months Ended September 30, 2013
Selling commissions, equal to 9% of the selling price of the Limited Liability Company Units, deducted from Other Members' capital	$	121,801	$	543,065
Reimbursement of other syndication costs to Managing Member and/or affiliates, deducted from Other Members' capital		157,733		554,033
Administrative costs reimbursed to Managing Member and/or affiliates		16,326		41,659
Asset management fees to Managing Member		4,282		10,820
Acquisition costs and note origination fees paid to Managing Member		47,202		205,213
	$	347,344	$	1,354,790

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Commitments (Narrative) (Details) (USD $)	Sep. 30, 2013
Disclosure Commitments Additional Information [Abstract]
Commitments to fund investments in notes receivable	$ 3,127,553

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Syndication Costs (Narrative) (Details) (USD $)	9 Months Ended	22 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Syndication Costs [Abstract]
Syndication costs		$ 2,065,386
Cost reimbursements as percentage of all offering proceeds	15.00%
Syndication costs in excess of limitation	$ 880,000	$ 880,000

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Fair Value Measurements (Reconciliation Of Level 3 Recurring Assets) (Details) (USD $)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013 Level 3 Estimated Fair Value [Member]	Dec. 31, 2012 Level 3 Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance		$ 24,412	$ 24,412
Fair value of new warrants, recorded during the year (included in net deferred loan fees or costs)			17,045	24,412
Net exercise of warrants			(4,847)
Unrealized gain on warrants, net recorded during the period	(1,397)	760	760
Balance	$ 37,370	$ 37,370	$ 37,370	$ 24,412

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Related Party Transactions (Affiliates Earned Commissions and Billed for Reimbursements Pursuant to Operating Agreement (Details) (USD $)	3 Months Ended	9 Months Ended	22 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
Organization and offering costs			$ 2,065,386
Administrative costs reimbursed to Managing Member and/or affiliates	16,326	41,659
Asset management fees to Managing Member	4,282	10,820
Acquisition costs and note origination fees paid to Managing Member	47,202	205,213
Related Party Transaction, Expenses from Transactions with Related Party, Total	347,344	1,354,790
Selling commission rate		9.00%
Selling Commissions To Affiliates [Member]
Organization and offering costs	121,801	543,065
Syndication Costs [Member]
Organization and offering costs	$ 157,733	$ 554,033

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Statements of Cash Flows (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Operating activities:
Net income (loss)	$ 72,289	$ (27,594)
Adjustment to reconcile net income (loss) to cash provided by operating activities:
Accretion of note discount - warrants	(2,309)	(5,898)
Amortization of net note origination costs	3,998	7,461
Gain on early termination of notes receivable	(46,452)	(46,452)
Gain on sales or dispositions of securities	(49,911)	(49,911)
Unrealized loss (gain) on fair valuation of warrants	1,397	(760)
Changes in operating assets and liabilities:
Accounts receivable	3,589	4,528
Prepaid expenses and other assets	(5,319)	(10,416)
Accounts payable, Managing Member		(996)
Accounts payable, other	29,999	29,993
Accrued liabilities, affiliates	(127,726)	(50,658)
Deposits due borrowers	(32,000)	(32,000)
Unearned fee income related to notes receivable	569	6,469
Net cash used in operating activities	(151,876)	(176,234)
Investing activities:
Advance payments	(24,412)	(53,832)
Proceeds from early termination of notes receivable	341,880	341,880
Proceeds from sales of warrants	54,758	54,758
Payments of note origination costs	(9,183)	(20,117)
Note receivable advances	(474,377)	(1,272,447)
Principal payments received on notes receivable	154,211	387,518
Net cash provided by (used in) investing activities	42,877	(562,240)
Financing activities:
Capital contributions	1,353,340	6,039,550
Rescissions of capital contributions	(385)	(5,320)
Net cash provided by financing activities	684,464	4,473,667
Net increase in cash and cash equivalents	575,465	3,735,193
Cash and cash equivalents at beginning of period	3,414,467	254,739
Cash and cash equivalents at end of period	3,989,932	3,989,932
Supplemental disclosures of cash flow information:
Cash paid during the period for taxes		1,600
Other Members [Member]
Financing activities:
Distributions to Members	(492,931)	(646,590)
Schedule of non-cash investing and financing transactions:
Distributions payable to Members at period-end	131,573	131,573
Managing Member [Member]
Financing activities:
Distributions to Members	(58,818)	(75,891)
Schedule of non-cash investing and financing transactions:
Payables to Managing Member and affiliates at period-end (syndication costs)	882,482	882,482
Distributions payable to Members at period-end	14,619	14,619
Selling Commissions To Affiliates [Member]
Financing activities:
Organization and offering costs	(30,666)	(476,954)
Syndication Costs [Member]
Financing activities:
Organization and offering costs	$ (86,076)	$ (361,128)

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2013

Summary of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2.  Summary of Significant Accounting Policies:

Basis of presentation:

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q as mandated by the Securities and Exchange Commission. The unaudited interim financial statements reflect all adjustmentswhich are, in the opinion of the Managing Member, necessary for a fair statement of financial position and results ofoperations for the interim periods presented. All such adjustments are of a normal recurring nature. Operating results for the three and nine months ended September 30, 2013 are not necessarily indicative of the results to be expected for the full year.

In preparing the accompanying financial statements, the Company has reviewed, as determined necessary by the Managing Member, events that have occurred after September 30, 2013, up until the issuance of the financial statements. No events were noted which would require disclosure in the footnotes to the financial statements.

Use of estimates

The preparation of the financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from the estimates.

Segment reporting:

The Company is organized into one operating segment for the purpose of making operating decisions or assessing performance. Accordingly, the Company operates in one reportable operating segment in the United States.

The Company’s principal decision makers are the Managing Member’s Chief Executive Officer and its Chief Financial Officer and Chief Operating Officer. The Company believes that its financing business operates as one reportable segment because: a) the Company measures profit and loss at the portfolio assets level as a whole; b) the principal decision makers do not review information based on any operating segment other than the equipment financing transaction portfolio; c) the Company does not maintain discrete financial information on any specific segment other than its equipment financing operations; d) the Company has not chosen to organize its business around different products and services other than equipment financing; and e) the Company has not chosen to organize its business around geographic areas.

The primary geographic region in which the Company seeks financing opportunities is North America. Currently, 100% of the Company’s operating revenues are from customers domiciled in North America.

Investment in securities:

From time to time, the Company may purchase securities of its borrowers or receive warrants and rights to purchase securities in connection with its lending arrangements.

Purchased securities

Purchased securities (primarily preferred stocks) are generally not registered for public sale and are carried at cost. Such securities are adjusted to fair value if the fair value is less than the carrying value and such impairment is deemed by the Managing Member to be other than temporary. Factors considered by the Managing Member in determining fair value include, but are not limited to, available financial information, the issuer’s ability to meet its current obligations and indications of the issuer’s subsequent ability to raise capital. Management has concluded that there are no identified events or changes in circumstances that may have a significant adverse effect on the fair value of the instruments and that it is not practicable to estimate the fair value of the investment because of its illiquidity.

Warrants

Warrants owned by the Company are not registered for public sale, but are considered derivatives and are carried at an estimated fair value on the balance sheet at the end of the period, as determined by the Managing Member. At September 30, 2013 and December 31, 2012, the Managing Member estimated the fair value of the warrants to be $37,370 and $24,412, respectively. See Note 9 for further discussion.

Per Unit data:

Net income (loss) per Unit is based upon the weighted average number of Other Members Units outstanding during the period.

Recent accounting pronouncements

Recent accounting standards updates as issued by the Financial Accounting Standards Board (FASB) were evaluated and determined to be not applicable to the Company.

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Syndication Costs

9 Months Ended

Sep. 30, 2013

Syndication Costs [Abstract]

Syndication Costs

5.  Syndication costs:

Syndication costs are reflected as a reduction to Members’ capital as such costs are netted against the capital raised. The amount shown is primarily comprised of selling commissions as well as fees pertaining to the organization of the Fund, document preparation, regulatory filing fees, and accounting and legal costs. Syndication costs totaled $2,065,386 for the period from December 8, 2011 (Date of Inception) through September 30, 2013.

The Operating Agreement places a limit for cost reimbursements to the Managing Member and/or affiliates. When added to selling commissions, such cost reimbursements may not exceed a total equal to 15% of all offering proceeds. As of September 30, 2013, the Company had recorded an approximate $880,000 of syndication costs in excess of the limitation. The limitation on the amount of syndication costs pursuant to the Operating Agreement is determined on the date of termination of the offering. At such time, the Manager guarantees repayment of any excess syndication costs (above the limitation) which it may have collected from the Company, which guarantee is without recourse or reimbursement by the Fund.

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Notes Receivable, Net

9 Months Ended

Sep. 30, 2013

Notes Receivables, Net [Abstract]

Notes Receivable, Net

3.  Notes receivable, net:

The Company has various notes receivable from borrowers who have financed the purchase of equipment through the Company. The terms of the notes receivable are from 31 to 42 months and bear interest at implicit or stated rates ranging from 11.29% to 14.30%. The notes are secured by the equipment financed. The notes mature in 2016.  There were neither impaired notes nor notes placed in non-accrual status as of September 30, 2013 and December 31, 2012.

As of September 30, 2013, the minimum future payments receivable are as follows:

Three months ending December 31, 2013	$	176,252
Year ending December 31, 2014		806,323
2015		823,117
2016		558,890
		2,364,582
Less: portion representing unearned interest income, net		(406,682)
Less: advance payments		(6,388)
Notes receivable, net	$	1,951,512

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Members' Capital (Narrative) (Details)				9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013 Managing Member [Member]	Sep. 30, 2013 Other Members [Member]
Other Members Capital Account [Line Items]
Other Members capital account, units issued	790,731	187,326	50
Other Members capital account, units outstanding	790,731	187,326	50
Other Members capital account, units authorized	7,500,000	7,500,000
Allocation of net Income or net losses from commencement until initial closing date				100.00%
Allocation of net Income or net losses commencing with initial closing date					100.00%
Allocation of all distributions of cash available for distribution and net disposition proceeds				5.00%
Allocation percentage, distributions of cash available for distribution				5.00%
Allocation percentage, distributions of net disposition proceeds				1.00%
Total distribution, priority return				8.00%
Allocation of subsequent distributions				15.00%

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Fair Value Measurements (Summary of Valuation Techniques and Significant Unobservable Inputs) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Stock price	$ 25.76
Exercise price	$ 25.76
Time to Maturity (in years)	9 years 8 months 23 days
Annual risk-free interest rate	2.47%
Annualized volatility	27.84%
Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Stock price	$ 0.05
Exercise price	$ 0.05
Time to Maturity (in years)	5 years 9 months
Annual risk-free interest rate	1.62%
Annualized volatility	3.14%

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Statements of Operations (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Revenues:
Notes receivable interest income, including amortization of net note origination costs and discounts	$ 52,727	$ 149,331
Gain on early termination of notes receivable	46,452	46,452
Gain on sales or dispositions of securities	49,911	49,911
Interest income	327	327
Unrealized (loss) gain on fair valuation of warrants	(1,397)	760
Other	5,096	11,477
Total revenues	153,116	258,258
Expenses:
Acquisition expense	38,019	185,096
Cost reimbursements to affiliates	16,326	41,659
Asset management fees to Managing Member	4,282	10,820
Professional fees	4,147	8,456
Outside services	5,662	14,330
Taxes on income and franchise fees		1,600
Bank charges	2,150	6,486
Other	10,241	17,405
Total operating expenses	80,827	285,852
Net income (loss)	72,289	(27,594)
Net income (loss):
Managing Member	62,238	88,192
Other Members	10,051	(115,786)
Net income (loss)	$ 72,289	$ (27,594)
Net income (loss) per Limited Liability Company Unit (Other Members)	$ 0.01	$ (0.22)
Weighted average number of Units outstanding	723,893	526,487

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Members' Capital

9 Months Ended

Sep. 30, 2013

Members' Capital [Abstract]

Members' Capital

8.  Members’ Capital:

A total of 790,731 and 187,326 Units were issued and outstanding at September 30, 2013 and December 31, 2012, respectively. The Fund is authorized to issue up to 7,500,000 Units in addition to the Units issued to the initial Member (50 Units).

From the commencement of the Fund until the initial closing date, as defined in the Operating Agreement, the Company’s net income and net losses are allocated 100% to the Manager. Commencing with the initial closing date, net income and net losses are allocated 100% to the Members. An amount equal to 5% of all Distributions of Cash Available for Distribution and Net Disposition Proceeds will be allocated to the Manager as the carried interest. An amount equal to (i) an additional 5% of all Distributions from Cash Available for Distribution and 1% of all Distributions of Net Disposition Proceeds will be paid to the Manager as a promotional interest until investors have received total distributions in amounts equal to their Capital Contributions plus an amount equal to a priority return of 8% per annum as defined in the Operating Agreement; and (ii) then 15% of all subsequent distributions will be allocated to the Manager as a promotional interest. Distributions not allocated to the Manager as carried or promotional interests will be allocated and paid to the Unitholders.

Distributions to the Other Members for the three and nine months ended September 30, 2013 are as follows:

		For the Three Months Ended September 30, 2013		For the Nine Months Ended September 30, 2013
Distributions declared	$	523,676	$	757,297
Weighted average number of Units outstanding		723,893		526,487
Weighted average distributions per Unit	$	0.72	$	1.44

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Statements of Changes in Members' Capital (Parenthetical) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Statements of Changes in Members' Capital [Abstract]
Distributions to Other Members, per unit	$ 0.72	$ 1.44	$ 1.13

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Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 3,989,932	$ 254,739
Accounts receivable	2,136	6,664
Notes receivable, net	1,951,512	1,313,139
Fair value of warrants	37,370	24,412
Prepaid expenses and other assets	10,416
Total assets	5,991,366	1,598,954
Accounts payable and accrued liabilities:
Managing Member	14,619	3,315
Affiliates	887,549	679,188
Accrued distributions to Other Members	131,573	20,868
Other	30,002	9
Deposits due borrowers		32,000
Total liabilities	1,063,743	735,380
Commitments and contingencies
Members' capital:
Managing Member
Other Members	4,927,623	863,574
Total Members' capital	4,927,623	863,574
Total liabilities and Members' capital	$ 5,991,366	$ 1,598,954

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Members' Capital (Distributions to Other Members) (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Members' Capital [Abstract]
Distributions declared	$ 523,676	$ 757,297	$ 23,550
Weighted average number of Units outstanding	723,893	526,487
Weighted average distributions per Unit	$ 0.72	$ 1.44	$ 1.13

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Notes Receivable, Net (Narrative) (Details)	Sep. 30, 2013
Minimum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Terms of the notes receivable	31 months
Notes receivable, interest rate	11.29%
Maximum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Terms of the notes receivable	42 months
Notes receivable, interest rate	14.30%
Notes maturity period	2016

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Guarantees

9 Months Ended

Sep. 30, 2013

Guarantees [Abstract]

Guarantees

7.  Guarantees:

The Company enters into contracts that contain a variety of indemnifications. The Company’s maximum exposure under these arrangements is unknown. However, based upon the Manager’s experience, there have not been any prior claims or losses pursuant to these types of contracts and the expectation of risk of loss is remote.

The Managing Member knows of no facts or circumstances that would make the Company’s contractual commitments outside standard mutual covenants applicable to commercial transactions between businesses. Accordingly, the Company believes that these indemnification obligations are made in the ordinary course of business as part of standard commercial and industry practice, and that any potential liability under the Company’s similar commitments is remote. Should any such indemnification obligation become payable, the Company would separately record and/or disclose such liability in accordance with GAAP.

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Fair Value Measurements (Narrative) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Fair Value Measurements [Abstract]
Warrants fair value	$ 37,370	$ 24,412

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2013

Summary of Significant Accounting Policies [Abstract]

Basis of Presentation

Basis of presentation:

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q as mandated by the Securities and Exchange Commission. The unaudited interim financial statements reflect all adjustmentswhich are, in the opinion of the Managing Member, necessary for a fair statement of financial position and results ofoperations for the interim periods presented. All such adjustments are of a normal recurring nature. Operating results for the three and nine months ended September 30, 2013 are not necessarily indicative of the results to be expected for the full year.

In preparing the accompanying financial statements, the Company has reviewed, as determined necessary by the Managing Member, events that have occurred after September 30, 2013, up until the issuance of the financial statements. No events were noted which would require disclosure in the footnotes to the financial statements.

Use of Estimates

Use of estimates

The preparation of the financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from the estimates.

Segment Reporting

Segment reporting:

The Company is organized into one operating segment for the purpose of making operating decisions or assessing performance. Accordingly, the Company operates in one reportable operating segment in the United States.

The Company’s principal decision makers are the Managing Member’s Chief Executive Officer and its Chief Financial Officer and Chief Operating Officer. The Company believes that its financing business operates as one reportable segment because: a) the Company measures profit and loss at the portfolio assets level as a whole; b) the principal decision makers do not review information based on any operating segment other than the equipment financing transaction portfolio; c) the Company does not maintain discrete financial information on any specific segment other than its equipment financing operations; d) the Company has not chosen to organize its business around different products and services other than equipment financing; and e) the Company has not chosen to organize its business around geographic areas.

The primary geographic region in which the Company seeks financing opportunities is North America. Currently, 100% of the Company’s operating revenues are from customers domiciled in North America.

Investment in Securities

Investment in securities:

From time to time, the Company may purchase securities of its borrowers or receive warrants and rights to purchase securities in connection with its lending arrangements.

Purchased securities

Purchased securities (primarily preferred stocks) are generally not registered for public sale and are carried at cost. Such securities are adjusted to fair value if the fair value is less than the carrying value and such impairment is deemed by the Managing Member to be other than temporary. Factors considered by the Managing Member in determining fair value include, but are not limited to, available financial information, the issuer’s ability to meet its current obligations and indications of the issuer’s subsequent ability to raise capital. Management has concluded that there are no identified events or changes in circumstances that may have a significant adverse effect on the fair value of the instruments and that it is not practicable to estimate the fair value of the investment because of its illiquidity.

Warrants

Warrants owned by the Company are not registered for public sale, but are considered derivatives and are carried at an estimated fair value on the balance sheet at the end of the period, as determined by the Managing Member. At September 30, 2013 and December 31, 2012, the Managing Member estimated the fair value of the warrants to be $37,370 and $24,412, respectively. See Note 9 for further discussion.

Per Unit Data

Per Unit data:

Net income (loss) per Unit is based upon the weighted average number of Other Members Units outstanding during the period.

Recent Accounting Pronouncements

Recent accounting pronouncements

Recent accounting standards updates as issued by the Financial Accounting Standards Board (FASB) were evaluated and determined to be not applicable to the Company.

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Commitments

9 Months Ended

Sep. 30, 2013

Commitments [Abstract]

Commitments

6.  Commitments:

At September 30, 2013, there were commitments to fund investments in notes receivable totaling $3,127,553. These amounts represent contract awards which may be canceled by the prospective borrower/investee or may not be accepted by the Company.

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Organization and Limited Liability Company Matters

9 Months Ended

Sep. 30, 2013

Organization and Limited Liability Company Matters [Abstract]

Organization and Limited Liability Company Matters

1.  Organization and Limited Liability Company matters:

ATEL Growth Capital Fund 8, LLC (the “Company” or the “Fund”) was formed under the laws of the state of California on December 8, 2011 for the purpose of providing financing for the acquisition of equipment and other goods and services used by emerging growth companies and established privately held companies without publicly traded securities, and for providing other forms of financing for, and to acquire equity interests and warrants and rights to purchase equity interests in such companies. The Fund may continue until it is terminated in accordance with the ATEL Growth Capital Fund 8, LLC limited liability company operating agreement dated December 13, 2011 (the “Operating Agreement”). The Managing Member of the Company is AGC8 Managing Member, LLC (the “Managing Member” or “Manager”), a Nevada limited liability corporation. Contributions in the amount of $500 were received as of December 31, 2011, which represented the initial Member’s capital investment. As a limited liability company, the liability of any individual member for the obligations of the Fund is limited to the extent of capital contributions to the Fund by the individual member.

The offering of the Company was granted effectiveness by the Securities and Exchange Commissionas of August 20, 2012. The offering will continue until the earlier of a period of two years from that date or until sales of the limited liability company units(Units) to the public reach $75,000,000.As of November 14, 2012, subscriptions for the minimum number of Units (120,000, representing $1,200,000), excluding subscriptions from Pennsylvania investors, had been received and the Fund requested subscription proceeds to be released from escrow. On that date, the Company commenced initialoperations. Pennsylvania subscriptions are subject to a separate escrow and are released to the Fund only at such time as total subscription proceeds received by the Fund from all subscribers, including the escrowed Pennsylvania subscriptions, equal to not less than $3,750,000 in gross proceeds. Total contributions to the Fund exceeded $3,750,000 on March 13, 2013, at which time a request was processed to release the Pennsylvania escrowed amounts.

As of September 30, 2013, cumulative contributions, net of rescissions and related distributions paid, totaling $7,907,310  (inclusive of the $500 initial Member’s capital investment) have been received. As of such date,  a total of 790,731 Units were issued and outstanding. The Fund is actively raising capital and, as of October 31, 2013, has received cumulative contributions, net of rescissions and related distributions paid, in the amount of $8,625,510(inclusive of the $500 initial Member’s capital investment).

The Fund, or Managing Member on behalf of the Fund, has and will continue to incur costs in connection with the organization, registration and issuance of the limited liability company units (Units). The amount of such costs to be borne by the Fund is limited by certain provisions of the Operating Agreement.

The Company’s principal objectives are to invest in a diversified portfolio of investments that will (i) preserve, protect and return the Company’s invested capital; (ii) generate regular cash distributions to Unit holders, with any balance remaining after required minimum distributions to be used to purchase additional investments during the Reinvestment Period (ending six calendar years after the completion of the Company’s public offering of Units), (iii) provide additional distributions to Unit holders from any proceeds from sales of Equity interests and (iv) provide total cash distributions to Unit holders equal to a desirable rate of return on their investment capital. The Company is governed by the Operating Agreement.

These unaudited interim financial statements should be read in conjunction with the financial statements and notes thereto contained in the report on Form 10-K for the year ended December 31, 2012, filed with the Securities and Exchange Commission.

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Fair Value Measurements (Estimated Fair Values of Financial Instruments) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Financial assets:
Cash and cash equivalents	$ 3,989,932	$ 254,739
Notes receivable, net	1,951,512	1,313,139
Warrants	37,370	24,412
Level 1 Estimated Fair Value [Member]
Financial assets:
Cash and cash equivalents	3,989,932	254,739
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Cash and cash equivalents
Notes receivable, net
Warrants
Level 3 Estimated Fair Value [Member]
Financial assets:
Notes receivable, net	1,951,512	1,313,139
Warrants	37,370	24,412
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	3,989,932	254,739
Notes receivable, net	1,951,512	1,313,139
Warrants	$ 37,370	$ 24,412

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Members' Capital (Tables)

9 Months Ended

Sep. 30, 2013

Members' Capital [Abstract]

Distributions To Other Members

Distributions to the Other Members for the three and nine months ended September 30, 2013 are as follows:

		For the Three Months Ended September 30, 2013		For the Nine Months Ended September 30, 2013
Distributions declared	$	523,676	$	757,297
Weighted average number of Units outstanding		723,893		526,487
Weighted average distributions per Unit	$	0.72	$	1.44

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Fair Value Measurements

9 Months Ended

Sep. 30, 2013

Fair Value Measurements [Abstract]

Fair Value Measurements

9.  Fair value measurements:

Fair value measurements and disclosures are based on a fair value hierarchy as determined by significant inputs used to measure fair value. The three levels of inputs within the fair value hierarchy are defined as follows:

Level 1 – Quoted prices in active markets for identical assets or liabilities. An active market for the asset or liability is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.

Level 2 – Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuations in which all significant inputs are observable in the market.

Level 3 – Valuation is modeled using significant inputs that are unobservable in the market. These unobservable inputs reflect the Company's own estimates of assumptions that market participants would use in pricing the asset or liability.

At September 30, 2013 and December 31, 2012, only the Company’s warrants were measured on a recurring basis. As of the same dates, the Company had no assets or liabilities that required measurement at fair value on a non-recurring basis.

The Company’s valuation policy is determined by members of the Asset Management, Credit and Accounting departments. Whenever possible, the policy is to obtain quoted market prices in active markets to estimate fair values for recognition and disclosure purposes. Where quoted market prices in active markets are not available, fair values are estimated using discounted cash flow analyses, broker quotes and third party appraisals of collateral and/or other valuation techniques. These techniques are significantly affected by certain of the Company’s assumptions, including discount rates and estimates of future cash flows. Potential taxes and other transaction costs are not considered in estimating fair values. As the Company is responsible for determining fair value, an analysis is performed on prices obtained from third parties. Such analysis is performed by asset management and credit department personnel who are familiar with the Company’s investments in notes receivable and equity securities of venture companies.The analysis may include a periodic review of price fluctuations and validation of numbers obtained from a specific third party by reference to multiple representative sources.

Such fair value adjustments utilized the following methodology:

Warrants (recurring)

Warrants owned by the Company are not registered for public sale, but are considered derivatives and are carried on the balance sheet at an estimated fair value at the end of the period. The valuation of the warrants was determined using a Black-Scholes formulation of value based upon the volatility of respective similar publicly traded companies, a risk free interest rate for the term(s) of the warrant exercise(s), and the respective exercise prices and number of warrants. As of September 30, 2013 and December 31, 2012, the calculated fair value of the Fund’s warrant portfolio totaled $37,370 and $24,412, respectively. Such valuations are classified within Level 3 of the valuation hierarchy.

The following reconciles the beginning and ending balances of the Company’s Level 3 recurring assets:

		Level 3 assets
Balance at December 31, 2011	$	-
Fair value of new warrants, recorded during the year (included in net deferred loan fees or costs)		24,412
Balance at December 31, 2012		24,412
Fair value of new warrants, recorded during the period (included in net deferred loan fees or costs)		17,045
Net exercise of warrants		(4,847)
Unrealized gain on warrants, net recorded during the period		760
Balance at September 30, 2013	$	37,370

The following table summarizes the valuation techniques and significant unobservable inputs used for the Company’s investments categorized as Level 3 in the fair value hierarchy as of September 30, 2013:

	Valuation	Valuation	Unobservable	Range of
Name	Frequency	Technique	Inputs	Input Values
Warrants	Recurring	Black-Scholes Model	Stock price	$0.05 - $25.76
			Exercise price	$0.05 - $25.76
			Time to Maturity (in years)	5.75 - 9.73
			Annual risk-free interest rate	1.62% - 2.47%
			Annualized volatility	3.14% - 27.84%

9.  Fair value measurements (continued):

The following disclosure of the estimated fair value of financial instruments is made in accordance with the guidance provided by the Financial Instruments Topic of the FASB Accounting Standards Codification. Fair value estimates, methods and assumptions, set forth below for the Company’s financial instruments, are made solely to comply with the requirements of the Financial Instruments Topic and should be read in conjunction with the Company’s financial statements and related notes.

The Company has determined the estimated fair value amounts by using market information and valuation methodologies that it considers appropriate and consistent with the fair value accounting guidance. Considerable judgment is required to interpret market data to develop the estimates of fair value. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.

Cash and cash equivalents

The recorded amounts of the Company’s cash and cash equivalents approximate fair value because of the liquidity and short-term maturity of these instruments.

Notes receivable

The fair value of the Company’s notes receivable is estimated using either third party appraisals of collateral or discounted cash flow analyses based upon current market rates for similar types of lending arrangements, with credit risk or estimated collateral liquidation adjustments for non-accrual loans as deemed necessary.

The following tables present estimated fair values of the Company’s financial instruments in accordance with the guidance provided by the Financial Instruments Topic of the FASB Accounting Standards Codificationat September 30, 2013 and December 31, 2012:

		September 30, 2013
		Carrying Amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	3,989,932	$	3,989,932	$	-	$	-	$	3,989,932
Notes receivable, net		1,951,512		-		-		1,951,512		1,951,512
Warrants		37,370		-		-		37,370		37,370
		December 31, 2012
		Carrying Amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	254,739	$	254,739	$	-	$	-	$	254,739
Notes receivable, net		1,313,139		-		-		1,313,139		1,313,139
Warrants		24,412		-		-		24,412		24,412

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Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013 segment	Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments	1
Number of reportable segments	1
Fair value of warrants	$ 37,370	$ 24,412
North America [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of operating revenues	100.00%

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Measurements [Abstract]

Reconciliation of Level 3 Recurring Assets

The following reconciles the beginning and ending balances of the Company’s Level 3 recurring assets:

		Level 3 assets
Balance at December 31, 2011	$	-
Fair value of new warrants, recorded during the year (included in net deferred loan fees or costs)		24,412
Balance at December 31, 2012		24,412
Fair value of new warrants, recorded during the period (included in net deferred loan fees or costs)		17,045
Net exercise of warrants		(4,847)
Unrealized gain on warrants, net recorded during the period		760
Balance at September 30, 2013	$	37,370

Summary of Valuation Techniques and Significant Unobservable Inputs

The following table summarizes the valuation techniques and significant unobservable inputs used for the Company’s investments categorized as Level 3 in the fair value hierarchy as of September 30, 2013:

	Valuation	Valuation	Unobservable	Range of
Name	Frequency	Technique	Inputs	Input Values
Warrants	Recurring	Black-Scholes Model	Stock price	$0.05 - $25.76
			Exercise price	$0.05 - $25.76
			Time to Maturity (in years)	5.75 - 9.73
			Annual risk-free interest rate	1.62% - 2.47%
			Annualized volatility	3.14% - 27.84%

Estimated Fair Values of Financial Instruments

The following tables present estimated fair values of the Company’s financial instruments in accordance with the guidance provided by the Financial Instruments Topic of the FASB Accounting Standards Codificationat September 30, 2013 and December 31, 2012:

		September 30, 2013
		Carrying Amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	3,989,932	$	3,989,932	$	-	$	-	$	3,989,932
Notes receivable, net		1,951,512		-		-		1,951,512		1,951,512
Warrants		37,370		-		-		37,370		37,370
		December 31, 2012
		Carrying Amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	254,739	$	254,739	$	-	$	-	$	254,739
Notes receivable, net		1,313,139		-		-		1,313,139		1,313,139
Warrants		24,412		-		-		24,412		24,412

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Document And Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Entity Registrant Name	ATEL Growth Capital Fund 8, LLC
Entity Central Index Key	0001537069
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Units Outstanding		862,551

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Organization and Limited Liability Company Matters (Narrative) (Details) (USD $)	9 Months Ended	13 Months Ended	21 Months Ended					1 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Mar. 13, 2013	Dec. 31, 2012	Nov. 14, 2012	Dec. 31, 2011	Oct. 31, 2013 Subsequent Event [Member]
Contributions of capital, initial							$ 500
Maximum offering period		2 years
Maximum value of units to be sold in public offering		75,000,000
Minimum amount of subscriptions to release proceeds in escrow						1,200,000
Minimum units to release proceeds in escrow						120,000
Minimum gross proceeds required to release Pennsylvania subscriptions				3,750,000
Capital contribution			$ 7,907,310					$ 8,625,510
Units issued	790,731	790,731	790,731		187,326		50
Units outstanding	790,731	790,731	790,731		187,326		50
Reinvestment period	6 years