Exhibit 99.01

Ilios Earned Net Profit in Second Quarter

WALTHAM, Mass., August 6, 2015, Ilios Dynamics Inc., a majority owned subsidiary of Tecogen^® Inc. (NASDAQ:TGEN), a manufacturer and installer of high efficiency water heaters and natural gas heat pump for industrial and commercial use, reported revenues of $889,894 for the six months ended June 30, 2015. Although the six months results show a loss, Ilios was profitable in the second quarter with a net income of $88,226.

Major Highlights:

Financial

◦ During the second quarter, Ilios had its first positive quarterly net income.

◦ Previously announced review and analysis of acquisition of remaining non-controlling interest by Tecogen has begun.

Sales & Operations

◦ Nine gas heat pumps were shipped in the quarter, the highest single quarterly shipment total since the Company's establishment.

◦ Current orders and backlog for the remainder of 2015 is more double any previous year, and is on track to surpass $1.2 million dollars in revenue.

About Ilios

Ilios Dynamics Inc., a subsidiary of Tecogen Inc., was formed in April 2009 to develop and distribute a line of ultra high-efficiency heating products for commercial and industrial applications utilizing advanced thermodynamic principles. Products incorporate mechanical work to extract heat from the environment to supplement chemical energy available from natural gas or propane. The result is a significant boost in efficiency and reduced carbon emissions relative to conventional heating systems. Please visit www.iliosdynamics.com.  

About Tecogen

Tecogen manufactures, installs, and maintains high efficiency, ultra-clean combined heat and power products including natural gas engine-driven cogeneration, air conditioning systems, and high-efficiency water heaters for residential, commercial, recreational and industrial use. The company is known for cost efficient, environmentally friendly and reliable products for energy production that, through patented technology, nearly eliminate criteria pollutants and significantly reduce a building’s carbon footprint.

In business for over 20 years, Tecogen has shipped more than 2,000 units, supported by an established network of engineering, sales, and service personnel across the United States. For more information, please visit www.tecogen.com.

Exhibit 99.01

Unaudited Historic Financial Information

ILIOS DYNAMICS INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

As of December 31, 2012, 2013, 2014 and June 30, 2015

(unaudited)

	June 30,			December 31,
	2015			2014			2013			2012
ASSETS
Current assets:
Cash and cash equivalents	$	129,894		$	274,671		$	52,050		$	518,457
Accounts receivable, net	532,416			267,680			—			—
Inventory, net	70,254			220,254			130,000			—
Prepaid and other current assets	6,500			6,220			6,340			—
Total current assets	739,064			768,825			188,390			518,457
Property, plant and equipment, net	4,302			5,930			22,648			80,115
Intangible assets, net	74,811			76,747			61,153			17,315
TOTAL ASSETS	$	818,177		$	851,502		$	272,191		$	615,887
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	1,668,266		$	1,666,138		$	840,255		$	134,676
Deferred revenue	93,000			24,000			15,000			—
Customer Deposits	61,430			158,917			—			—
Total current liabilities	1,822,696			1,849,055			855,255			134,676
Stockholders’ equity:
Common stock, $0.001 par value	14,920			14,920			14,920			15,120
Additional paid-in capital	3,199,213			3,192,957			3,183,159			3,224,470
Accumulated deficit	(4,218,652		)	(4,205,430		)	(3,781,143		)	(2,758,379		)
Total stockholders’ equity	(1,004,519		)	(997,553		)	(583,064		)	481,211
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	818,177		$	851,502		$	272,191		$	615,887

ILIOS DYNAMICS INC.

STATEMENTS OF OPERATIONS

For the years ended December 31, 2012, 2013 and 2014, and six months ended June 30, 2015

(unaudited)

	First six months of
	2015		2014		2013		2012
Revenues	889,894		461,395		259,335		35,000
Cost of goods sold	618,319		367,710		437,361		32,620
Gross profit	271,575		93,685		(178,026	)	2,380
Operating expenses
General and administrative	234,450		415,029		737,805		1,007,042
Selling	8,386		36,632		85,035		35,265
Total operating expenses	242,836		451,661		822,840		1,042,307
Loss from operations	28,739		(357,976	)	(1,000,866	)	(1,039,927	)
Other income (expense)	(41,962	)	(66,311	)	(21,898	)	2,593
Consolidated net loss	(13,223	)	(424,287	)	(1,022,764	)	(1,037,334	)

Exhibit 99.01

ILIOS DYNAMICS INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

For the six months ended June 30, 2015 and year ended December 31, 2014 and 2013.

(unaudited)

	June 30,			December 31,			December 31,
	2015			2014			2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$	(13,222	)	$	(424,287	)	$	(1,022,764	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	10,615			27,837			62,754
Stock-based compensation	6,256			9,798			(41,511		)
Changes in operating assets and liabilities
(Increase) decrease in:
Accounts receivable	(264,736		)	(267,680		)	—
Inventory, net	150,000			(90,254		)	(130,000		)
Prepaid expenses and other current assets	(280		)	120			(6,340		)
Increase (decrease) in:
Accounts payable	2,128			825,883			705,579
Accrued expenses	(97,487		)	158,917			—
Deferred revenue	69,000			9,000			15,000
Net cash used in operating activities	(137,726		)	249,334			(417,282		)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	—			(2,713		)	(1,000		)
Purchases of intangible assets	(7,051		)	(24,000		)	(48,125		)
Net cash used in investing activities	(7,051		)	(26,713		)	(49,125		)
Net increase (decrease) in cash and cash equivalents	(144,777		)	222,621			(466,407		)
Cash and cash equivalents, beginning of the period	274,671			52,050			518,457
Cash and cash equivalents, end of the period	$	129,894		$	274,671		$	52,050