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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2021

a.Principles of consolidation:

The consolidated financial statements include the accounts of the Company and its subsidiaries. Intercompany transactions and balances including profit from intercompany sales not yet realized outside the Company have been eliminated upon consolidation.

Use of estimates

b.Use of estimates:

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, costs and expenses and related disclosures in the accompanying notes. The Company bases its estimates on historical experience and on various other assumptions that the Company believes to be reasonable under the circumstances. On an ongoing basis, the Company evaluates these assumptions, judgments and estimates. Actual results may differ from these estimates.

Financial statements in U.S. dollars

c.Financial statements in U.S. dollars:

A major part of the Company’s operations is carried out in the United States, Israel and certain other countries. The functional currency of these entities is the U.S. dollar. Financing activities, including cash investments are primarily made in U.S. dollars.

Accordingly, monetary accounts maintained in currencies other than the U.S. dollar are translated into U.S. dollars in accordance with Financial Accounting Standards Board Accounting Standards Codification (“ASC”) No. 830 “Foreign Currency Matters”. All transaction gains and losses of the re-measurement of monetary balance sheet items are reflected in the statements of income as financial income or expenses, as appropriate.

The financial statements of other Company’s subsidiaries whose functional currency is other than the U.S. dollar have been translated into U.S dollars. Assets and liabilities have been translated using the exchange rates in effect as of the balance sheet date. Statements of income amounts have been translated using the average exchange rate for the relevant periods.

The resulting translation adjustments are reported as a component of stockholders’ equity in accumulated other comprehensive income (loss). Gains and losses arising from intercompany foreign currency transactions that are of a long-term investment in nature are reported in the same manner as translation adjustments.

Cash and cash equivalents

d.Cash and cash equivalents:

Cash equivalents are short-term, highly liquid investments that are readily convertible to cash, with original maturities of three months or less at the date acquired.

Short-term bank deposits

e.Short-term bank deposits:

Short-term bank deposits are deposits with an original maturity of more than three months and less than a year from the date of investment and which do not meet the definition of cash equivalents. The deposits are presented according to their term deposits.

Restricted bank deposits

f.Restricted bank deposits:

Short-term restricted bank deposits possess an original maturity of more than three months and less than a year from the date of investment. Long-term restricted bank deposits possess an original maturity of more than one year from the date of investment. Restricted bank deposits are primarily used as collateral for the Company's office leases and credit cards.

Marketable Securities

g.Marketable Securities:

Marketable securities consist of corporate and governmental bonds. The Company determines the appropriate classification of marketable securities at the time of purchase and re-evaluates such designation at each balance sheet date. In accordance with FASB ASC No. 320 “Investments - Debt and Equity Securities”, the Company classifies marketable securities as available-for-sale.

Available-for-sale securities are stated at fair value, with unrealized gains and losses reported in accumulated other comprehensive income (loss), a separate component of stockholders’ equity, net of taxes. Realized gains and losses on sales of marketable securities, as determined on a specific identification basis, are included in financial income (expenses), net. The amortized cost of marketable securities is adjusted for amortization of premium and accretion of discount to maturity, both of which, together with interest, are included in financial income (expenses), net.

The Company classifies its marketable securities as either short-term or long-term based on each instrument’s underlying contractual maturity date. Marketable securities with maturities of 12 months or less are classified as short-term and marketable securities with maturities greater than 12 months are classified as long-term.

On each reporting period, the Company evaluates whether declines in fair value below carrying value are due to expected credit losses, as well as the ability and intent to hold the investment until a forecasted recovery occurs, in accordance with ASC 326. Allowance for credit losses on AFS debt securities are recognized as a charge in financial income (expenses), net, on the consolidated statements of income, and any remaining unrealized losses, net of taxes, are included in accumulated other comprehensive income (loss) in stockholders' equity.

The Company has not recorded credit losses for the years ended December 31, 2021 and 2020. There was no other-than-temporary-impairment charge for any unrealized losses in 2019.

The Company determines realized gains or losses on sale of marketable securities on a specific identification method and records such gains or losses in financial income (expenses), net on the consolidated statements of income.

Investments in privately-held companies

h.Investment in privately-held companies:

The Company's equity investments are investments in equity securities of privately-held companies, that are not traded and therefore not supported with observable market prices. The Company elected to account for its equity investments without readily determinable market values that either (i) do not meet the definition of in-substance common stock or (ii) do not provide the Company with control or significant influence using Accounting Standards Update (“ASU”) 2016-01.

Under ASU 2016-01, the Company adjusts the carrying value of its investments to fair value upon observable transactions for identical or similar investments of the same issuer.

The Company periodically evaluates the carrying value of the investments in privately-held companies when events and circumstances indicate that the carrying amount of the investment may not be recovered. The maximum loss the Company can incur for its investments is their carrying value.

The Company may determine the fair value by reviewing equity valuation reports, current financial results, long-term plans of the privately-held companies, the amount of cash that the privately-held companies have on-hand, the ability to obtain additional financing and overall market conditions in which the privately-held companies operate or based on the price observed from the most recent completed financing.

All gains and losses on investments in privately-held companies, realized and unrealized, are recognized in financial income (expenses), net.

Trade receivables

i.Trade receivables:

Trade receivables are stated net of credit losses allowance. The Company is exposed to credit losses primarily through sales of products. The allowance against gross trade receivables reflects the current expected credit loss inherent in the receivables portfolio determined based on the Company’s methodology. The Company’s methodology is based on historical collection experience, customer creditworthiness, current and future economic condition and market condition. Additionally, specific allowance amounts are established to record the appropriate provision for customers that have a higher probability of default. Trade receivables are written off after all reasonable means to collect the full amount have been exhausted.

The following table provides a roll-forward of the allowance for credit losses that is deducted from the amortized cost basis of trade receivables to present the net amount expected to be collected:

	Year Ended December 31, 2021
Balance, at beginning of the period	$	2,886
Decrease in provision for expected credit losses		(142	)
Amounts written off charged against the allowance and others		(118	)
Balance, at end of the period	$	2,626

Inventories

j.Inventories:

Inventories are stated at the lower of cost or net realizable value. Cost includes depreciation, labor, material and overhead costs. Inventory reserves are provided to cover risks arising from slow-moving items or technological obsolescence. The Company periodically evaluates the quantities on hand relative to historical, current, and projected sales volume. Based on this evaluation, an impairment charge is recorded when required to write-down inventory to its net realizable value. Cost of finished goods and raw materials is determined using the moving average cost method.

Property, plant and equipment

k.Property, plant and equipment:

Property, plant and equipment are stated at cost, net of accumulated depreciation and government grants. Assets under construction represent the construction or development stage of property and equipment that have not yet been placed in service for the Company's intended use. Depreciation is calculated by the straight-line method over the estimated useful life of the assets, at the following rates:

		%
Buildings and plants		2.5-5.7 (mainly 5.4)
Computers and peripheral equipment		14.3-33.3 (mainly 33.3)
Office furniture and equipment		7-25 (mainly 7)
Machinery and equipment		10-20 (mainly 10)
Laboratory and testing equipment		7-20 (mainly 10)
Leasehold improvements		over the shorter of the lease term or useful economic life

Leases

l.Leases:

The Company determines if an arrangement is a lease at inception. Contracts containing a lease are further evaluated for classification as an operating or finance lease. In determining the leases classification the Company assesses among other criteria: (i) 75% or more of the remaining economic life of the underlying asset is a major part of the remaining economic life of that underlying asset; and (ii) 90% or more of the fair value of the underlying asset comprises substantially all of the fair value of the underlying asset. Operating leases are included in operating lease right-of-use (“ROU”) assets, other current liabilities and long-term operating lease liabilities in the Company’s consolidated balance sheets. Finance leases are included in property, plant and equipment, net, other current liabilities, and long-term finance lease liabilities in the Company’s consolidated balance sheets. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. For leases with terms greater than 12 months, the Company records the ROU asset and liability at commencement date based on the present value of lease payments according to their term.

The Company uses incremental borrowing rates based on the estimated rate of interest for collateralized borrowing over a similar term of the lease payments at commencement date. The ROU asset also includes any lease payments made and excludes lease incentives. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expenses are recognized on a straight-line basis over the lease term or the useful life of the leased asset.

In addition, the carrying amount of the ROU and lease liabilities are remeasured if there is a modification, a change in the lease term, a change in the in-substance fixed lease payments or a change in the assessment to purchase the underlying asset.

Business Combination

m.Business Combination:

The Company allocates the fair value of the purchase price to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated fair value. The excess of the fair value of the purchase price over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets.

Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired technology and discount rates. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period, which does not exceed one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill. Upon the finalization of the measurement period, any subsequent adjustments are recorded to earnings.

Intangible Assets

n.Intangible Assets:

The Company evaluates the recoverability of finite-lived intangible assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable.

The evaluation is performed at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Recoverability of these group of assets is measured by a comparison of the carrying amounts to the future undiscounted cash flows the group of assets is expected to generate.

If such review indicates that the carrying amount of intangible assets is not recoverable, the carrying amount of such assets is reduced to fair value.

Acquired identifiable finite-lived intangible assets are amortized on a straight-line basis or accelerated method over the estimated useful lives of the assets. The basis of amortization approximates the pattern in which the assets are utilized, over their estimated useful lives. The Company routinely reviews the remaining estimated useful lives of finite-lived intangible assets. In case the Company reduces the estimated useful life for any asset, the remaining unamortized balance is amortized or depreciated over the revised estimated useful life (see Note 8).

For the years ended December 31, 2021, 2020 and 2019, no impairment losses have been identified.

Goodwill

o.Goodwill:

Goodwill reflects the excess of the consideration transferred, including the fair value of any contingent consideration and any non-controlling interest in the acquiree, over the assigned fair values of the identifiable net assets acquired. Goodwill is not amortized, and is assigned to reporting units and tested for impairment at least on an annual basis, in the fourth quarter of the fiscal year.

The goodwill impairment test is performed according to the following principles:

(1) An initial qualitative assessment may be performed to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount.
(2) If the Company concludes it is more likely than not that the fair value of the reporting unit is less than its carrying amount, a quantitative fair value test is performed. An impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value is recognized.

The Company has not recorded any impairment charges of goodwill during the years ended December 31, 2021, 2020 and 2019.

Impairment of long-lived assets

p.Impairment of long-lived assets:

The Company’s long-lived assets, other than goodwill and intangible assets, including right-of-use assets, are reviewed for impairment in accordance with ASC 360 “Property, Plants and Equipment”, whenever events or changes in circumstances indicate that the carrying amount of an asset (or asset group) may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset (or asset group) to the future undiscounted cash flows expected to be generated by the assets (or asset group). If such assets are considered to be impaired, the impairment to be recognized is measured as the amount by which the carrying amount of the assets exceeds their fair value.

For the years ended December 31, 2021, 2020 and 2019, no impairment losses have been identified.

Severance pay

q.Severance pay:

The employees of the Company’s Israeli subsidiary are included under Section 14 of the Severance Pay Law, 1963, under which these employees are entitled only to monthly deposits made in their name with insurance companies, at a rate of 8.33% of their monthly salary. These payments cause the Company to be released from any future obligation under the Israeli Severance Pay Law to make severance payments in respect of those employees; therefore, related assets and liabilities are not presented in the consolidated balance sheets.

For the years ended December 31, 2021, 2020 and 2019, the Company recorded $14,231, $10,598 and $7,285 in severance expenses related to its employees, respectively.

Derivatives and Hedging

r.Derivatives and Hedging:

The Company accounts for derivatives and hedging based on ASC 815 (“Derivatives and Hedging”). ASC 815 requires the Company to recognize all derivatives on the balance sheet at fair value. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship.

To protect against the increase in value of forecasted foreign currency cash flows resulting from salary denominated in the Israeli currency, the New Israeli Shekels (“NIS”), during the year ended December 31, 2021, the Company instituted a foreign currency cash flow hedging program whereby portions of the anticipated payroll denominated in NIS for a period of one to nine months with hedging contracts.

Accordingly, when the dollar strengthens against the NIS, the decline in present value of future foreign currency expenses is offset by losses in the fair value of the hedging contracts. Conversely, when the dollar weakens, the increase in the present value of future foreign currency cash flows is offset by gains in the fair value of the hedging contracts. These hedging contracts are designated as cash flow hedges, as defined by ASC 815 and are all effective hedges.

The Company also entered into derivative instrument arrangements to hedge the Company’s exposure to currencies other than the U.S. dollar. These derivative instruments are not designated as cash flow hedges, as defined by ASC 815, and therefore all gains and losses, resulting from fair value remeasurement, were recorded immediately in the statement of income, as a financial (expense) income, net.

Revenue recognition

s.Revenue recognition:

Revenues are recognized in accordance with ASC 606; revenue from contracts with customers is recognized when control of the promised goods or services is transferred to the customers, in an amount that the Company expects in exchange for those goods or services.

The Company’s products consist mainly of (i) power optimizers, (ii) inverters, (iii) residential batteries, (iv) a related cloud-based monitoring platform, (v) communication services, (vi) UPS units, (vii) Lithium-ion cells and other storage solutions (viii) powertrain kits for EVs, and (ix) automated machinery for manufacturing lines.

The Company recognizes revenue under the core principle that transfer of control to the Company’s customers should be depicted in an amount reflecting the consideration the Company expects to receive in revenue.

In order to achieve that core principle, the Company applies the following five-step approach: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when the performance obligation is satisfied.

(1)Identify the contract with a customer

A contract is an agreement or purchase order between two or more parties that creates enforceable rights and obligations. In evaluating the contract, the Company analyzes the customer’s intent and ability to pay the amount of promised consideration (credit risk) and considers the probability of collecting substantially all of the consideration.

The Company determines whether collectability is reasonably assured on a customer-by-customer basis pursuant to its credit review policy. The Company typically sells to customers with whom it has a long-term business relationship and a history of successful collection. For a new customer, or when an existing customer substantially expands its commitments, the Company evaluates the customer’s financial position, the number of years the customer has been in business, the history of collection with the customer, and the customer’s ability to pay, and typically assigns a credit limit based on that review.

(2)Identify the performance obligations in the contract

At a contract’s inception, the Company assesses the goods or services promised in a contract with a customer and identifies the performance obligations. The main performance obligations are the provisions of the following: delivery of the Company’s products; cloud based monitoring services; extended warranty services and communication services.

(3)Determine the transaction price

The transaction price is the amount of consideration to which the Company is entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties. Generally, the Company does not provide price protection, stock rotation, and/or right of return. The Company determines the transaction price for all satisfied and unsatisfied performance obligations identified in the contract from contract inception to the beginning of the earliest period presented. Rebates or discounts on goods or services are accounted for as variable consideration. The rebate or discount program is applied retrospectively for future purchases. Provisions for rebates, sales incentives, and discounts to customers are accounted for as reductions in revenue in the same period the related sales are recorded.

Accrual for rebates for direct customers is presented net of receivables. Accrual for sale incentives related to non-direct customers is presented under accrued expenses and other current liabilities. The Company accrued $152,717 and $65,131 for rebates and sales incentives as of December 31, 2021 and 2020, respectively.

When a contract provides a customer with payment terms of more than a year, the Company considers whether those terms create variability in the transaction price and whether a significant financing component exists.

As of December 31, 2021, the Company has not provided payment terms of more than a year.

The performance obligations that extend for a period greater than one year are those that include a financial component: (i) warranty extension services, (ii) cloud-based monitoring, and (iii) communication services. The Company recognizes financing component expenses in its consolidated statement of income in relation to advance payments for performance obligations that extend for a period greater than one year. These financing component expenses are reflected in the Company’s deferred revenues balance.

(4)Allocate the transaction price to the performance obligations in the contract

The Company performs an allocation of the transaction price to each separate performance obligation, in proportion to their relative standalone selling prices.

(5)Recognize revenue when a performance obligation is satisfied

Revenue is recognized when or as performance obligations are satisfied by transferring control of a promised good or service to a customer. Control either transfers over time or at a point in time, which affects when revenue is recorded.

Revenues from sales of products are recognized when control is transferred (based on the agreed International Commercial terms, or “INCOTERMS”). Revenues related to warranty extension services, cloud-based monitoring, and communication services are recognized over time on a straight-line basis.

Deferred revenues consist of deferred cloud-based monitoring services, communication services, warranty extension services and advance payments received from customers for the Company’s products. Deferred revenues are classified as short-term and long-term deferred revenues based on the period in which revenues are expected to be recognized (see Note 13).

Cost of revenues

t.Cost of revenues:

Cost of revenues includes the following: product costs consisting of purchases from contract manufacturers and other suppliers, direct and indirect manufacturing costs, shipping and handling, support, warranty expenses and changes in warranty provision, provision for losses related to slow moving and dead inventory, personnel and logistics costs.

Shipping and handling costs

Shipping and handling costs, which amounted to $116,574, $101,597 and $113,635, for the years ended December 31, 2021, 2020 and 2019, respectively, are included in the cost of revenues in the consolidated statements of income. Shipping and handling costs include custom tariff charges and all other costs associated with the distribution of finished goods from the Company’s point of sale directly to its customers.

Warranty obligations

u.Warranty obligations:

The Company provides a product warranty for its solar segment related products as follows: a standard 10-year limited warranty for its residential batteries, a standard 12-year limited warranty for the majority of its inverters, that is extendable to 20 or 25 years for an additional cost and a 25-year limited warranty for power optimizers.

In certain cases, the Company provides an extended warranty for inverters that increases the warranty period for up to 25 years.

The Company maintains reserves to cover the expected costs that could result from the standard warranty. The warranty liability is in the form of product replacement and associated costs. Warranty reserves are based on the Company’s best estimate of such costs and are included in cost of revenues. The reserve for the related warranty expenses is based on various factors including assumptions about the frequency of warranty claims on product failures, derived from results of accelerated lab testing, field monitoring, analysis of the history of product field failures, and the Company’s reliability estimates.

The Company has established a reliability measurement system based on the units’ estimated mean time between failure, or MTBF, a metric that equates to a steady-state failure rate per year for each product generation. The MTBF predicts the expected failure rate of each product within the Company's products installed base during the expected product warranted lifetime.

The Company performs accelerated life cycle testing, which simulates the service life of the product in a short period of time.

The accelerated life cycle tests incorporate test methodologies derived from standard tests used by solar module vendors to evaluate the period over which solar modules wear out. Corresponding replacement costs are updated periodically to reflect changes in the Company’s actual and estimated production costs for its products, rate of usage of refurbished units as a replacement of faulty units, and other costs related to logistic and subcontractors’ services associated with the replacement products.

In addition, through the collection of actual field failure statistics, the Company has identified several additional failure causes that are not included in the MTBF model. Such causes, which mostly consist of design errors, workmanship errors caused during the manufacturing process and, to a lesser extent, replacement of non-faulty units by installers, result in generating additional replacement costs to the replacement costs projected under the MTBF model.

For other products, the Company accrues for warranty costs based on the Company’s best estimate of product and associated costs. The Company’s other products are sold with a standard limited warranty that typically range in duration from one to ten years.

Warranty obligations are classified as short-term and long-term obligations based on the period in which the warranty is expected to be claimed.

Convertible senior notes

v.Convertible senior notes:

Prior to January 1, 2021, the Company separated the Notes into liability and equity components. On issuance, the carrying amount of the equity components was recorded as a debt discount and subsequently amortized to interest expense. Total initial issuance costs of $14,631 related to the Notes were allocated between the liability and equity components in the same proportion as the allocation of the total proceeds to the liability and equity components. The Company initially allocated issuance costs of $13,501 and $1,130 to the liability and equity components, respectively. The issuance costs attributable to the equity component were netted against the respective equity component in additional paid-in capital. Issuance costs attributable to the liability component are being amortized to interest expense over the respective term of the Notes using the effective interest rate method.

Effective January 1, 2021, the Company early adopted ASU 2020-06 using the modified retrospective approach. The Notes are accounted for as a single liability measured at its amortized cost, as no other embedded features require bifurcation and recognition as derivatives. Adoption of the new standard resulted in an increase of retained earnings in an amount of $2,884, a decrease of an additional paid-in capital in an amount of $36,336, an increase of convertible senior notes, net, in an amount of $45,282 and a decrease of deferred tax liabilities, net, in an amount of $11,830. The impact of adoption of this standard on the Company’s earnings per share was immaterial.

The Company’s Convertible Senior Notes are included in the calculation of diluted Earnings Per Share (“EPS”) if the assumed conversion into common shares is dilutive, using the “if-converted” method. This involves adding back the periodic non-cash interest expense net of tax associated with the Notes to the numerator and by adding the shares that would be issued in an assumed conversion (regardless of whether the conversion option is in or out of the money) to the denominator for the purposes of calculating diluted EPS, unless the Notes are antidilutive (See Note 20).

Research and development costs

w.Research and development costs:

Research and development costs, are charged to the consolidated statement of income as incurred.

Concentrations of credit risks

x.Concentrations of credit risks:

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, short-term bank deposits, restricted bank deposits, marketable securities, trade receivables and other accounts receivable.

Cash and cash equivalents, short-term bank deposits and restricted bank deposits are mainly invested in major banks in the U.S., Israel and Korea. Management believes that the financial institutions that hold the Company’s investments are financially sound and, accordingly, minimal credit risk exists with respect to these investments.

The Company's debt marketable securities include investments in highly-rated corporate debentures (located mainly in U.S., UK, France, South Korea, Netherlands and other countries) and governmental bonds. The financial institutions that hold the Company's debt marketable securities are major financial institutions located in the United States. The Company believes its debt marketable securities portfolio is a diverse portfolio of highly-rated securities and the Company's investment policy limits the amount the Company may invest in an issuer (see Note 2g.).

The trade receivables of the Company derive from sales to customers located primarily in the United States and Europe.

The Company performs ongoing credit evaluations of its customers for the purpose of determining the appropriate allowance for credit losses (see Note 2i.). The Company generally does not require collaterals, however, in certain circumstances, the Company may require letters of credit, other collateral, or additional guarantees. From time to time, the Company may purchase trade credit insurance.

The Company had two major customers (customers with attributable revenues that represents more than 10% of total revenues) for the year ended December 31, 2021 and one major customer for the years ended December 31, 2020, and 2019 that accounted for approximately 30.9%, 14.8% and 20.4% of the Company’s consolidated revenues, respectively. All of the revenues from these customers were generated in the solar segment.

The Company had two major customers (customer with a balance that represents more than 10% of total trade receivables, net) as of December 31, 2021 and 2020 that accounted in the aggregate for approximately 39.3% and 34.6%, of the Company’s consolidated trade receivables, net, respectively.

Concentrations of supply risks

y.Concentrations of supply risks:

The Company depends on two contract manufacturers and several limited or single source component suppliers. Reliance on these vendors makes the Company vulnerable to possible capacity constraints and reduced control over component availability, delivery schedules, manufacturing yields, and costs.

As of December 31, 2021 and 2020, two contract manufacturers collectively accounted for 27.9% and 48.5% of the Company’s total trade payables, net, respectively.

During 2020, the Company started production in its manufacturing facility in the North of Israel, “Sella 1”. During the second quarter of 2021, Sella 1 reached full manufacturing capacity.

Fair value of financial instruments

z.Fair value of financial instruments:

The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:

The carrying value of cash and cash equivalents, short-term bank deposits, restricted bank deposits, trade receivables, net, long term bank loans and current maturities, prepaid expenses and other current assets, trade payables, net, employee and payroll accruals and accrued expenses and other current liabilities approximate their fair values due to the short-term maturities of such instruments.

Assets measured at fair value on a recurring basis as of December 31, 2021 and 2020 are comprised of money market funds, derivative instruments and debt marketable securities (see Note 11).

The Company applies ASC 820 “Fair Value Measurements and Disclosures”, with respect to fair value measurements of all financial assets and liabilities. Fair value is an exit price, representing the amount that would be received for the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability.

A three-tiered fair value hierarchy is established as a basis for considering such assumptions and for inputs used in the valuation methodologies in measuring fair value:

Level 1-Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2-Include other inputs that are directly or indirectly observable in the marketplace.

Level 3-Unobservable inputs which are supported by little or no market activity.

The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

Stock-based compensation

aa.Stock-based compensation:

The Company uses the closing trading price of its common stock on the day before the grant date as the fair value of awards of restricted stock units ("RSUs"), and performance stock units that are based on the Company's financial performance targets ("PSUs"). The compensation expense for RSUs is recognized using a straight-line attribution method over the requisite employee service period while compensation expense for PSUs is recognized using an accelerated amortization model. The Company estimates the forfeitures at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Estimated forfeitures are based on actual historical pre-vesting forfeitures.

The Company selected the Black-Scholes-Merton option-pricing model as the most appropriate fair value method for its stock-option awards and Employee Stock Purchase Plan (“ESPP”). The option-pricing model requires a number of assumptions, of which the most significant are the fair market value of the underlying common stock, expected stock price volatility, and the expected option term. Expected volatility for stock-option awards and ESPP was calculated based upon the Company’s stock prices. The expected term of options granted is based upon historical experience and represents the period between the options’ grant date and the expected exercise or expiration date. The risk-free interest rate is based on the yield from U.S. treasury bonds with an equivalent term. The Company doesn't use dividend yield rate since the Company has not declared or paid any dividends on its common stock and does not expect to pay any dividends in the foreseeable future.

The Company measures a modified stock based award at fair value and recognizes the compensation cost at the beginning of the modification date over the employee’s requisite service period of the modified award. The fair value for options granted to employees and ESPP in the years ended December 31, 2021, 2020 and 2019, are estimated at the date of grant using the following assumptions:

	Year ended December 31,
	2021			2020			2019
Employee Stock Options
Risk-free interest		0.43	%		1.73	%		2.53	%
Dividend yields		0	%		0	%		0	%
Volatility		60.74	%		58.98	%		56.26	%
Expected option term in years		5.48			6.00			6.03
Estimated forfeiture rate		0	%		0	%		0	%
ESPP
Risk-free interest		0.03% - 0.10	%		0.09% - 1.63	%		1.63% - 2.35	%
Dividend yields		0	%		0	%		0	%
Volatility		48.39% - 76.05	%		55.95% - 92.57	%		46.68% - 55.95	%
Expected term	6 months			6 months			6 months

Earnings per share

ab.Earnings per share

Basic net EPS is computed by dividing the net earnings attributable to SolarEdge Technologies, Inc. by the weighted-average number of shares of common stock outstanding during the period.

Diluted net EPS is computed by giving effect to all potential shares of common stock, to the extent dilutive, including stock options, RSUs, PSUs, shares to be purchased under the Company’s ESPP, and the Notes due 2025, all in accordance with ASC No. 260, "Earnings Per Share."

Income taxes

ac.Income taxes:

The Company and its subsidiaries account for income taxes in accordance with ASC 740, “Income Taxes”. ASC 740 prescribes the use of the liability method, whereby deferred tax asset and liability account balances are determined based on differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates that will be in effect when the differences are expected to reverse.

Deferred income tax balances reflect the effects of temporary differences between the carrying amounts of assets and liabilities and their tax bases and are stated at enacted tax rates expected to be in effect when taxes are actually paid or recovered. Deferred tax assets are evaluated for future realization and reduced by a valuation allowance to the extent the Company believes they will not be realized.

The Company accounts for uncertain tax positions in accordance with ASC 740-10 two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position taken or expected to be taken in a tax return by determining if the weight of available evidence indicates that it is more likely than not that, on an evaluation of the technical merits, the tax position will be sustained on audit, including resolution of any related appeals or litigation processes. The second step is to measure the tax benefit as the largest amount that is more than 50% (cumulative probability) likely to be realized upon ultimate settlement.

New accounting pronouncements not yet effective

ad.New accounting pronouncements not yet effective:

In October 2021, the FASB issued ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers (ASU 2021-08), which clarifies that an acquirer of a business should recognize and measure contract assets and contract liabilities in a business combination in accordance with Accounting Standards Codification (ASC) Topic 606, Revenue from Contracts with Customers (Topic 606). This guidance is effective for fiscal years beginning after 15 December 2022 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements

In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832): Disclosure by Business Entities about Government Assistance (ASU 2021-10), which improves the transparency of government assistance received by most business entities by requiring the disclosure of: (1) the types of government assistance received; (2) the accounting for such assistance; and (3) the effect of the assistance on a business entity's financial statements. This guidance is effective for financial statements issued for annual periods beginning after 15 December 2021. Early adoption is permitted. The impact of this ASU on the Company’s consolidated financial statements is expected to be immaterial.

Recently issued and adopted pronouncements

ae.Recently issued and adopted pronouncements:

In January 2020, the FASB issued ASU 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815), which clarifies the interaction between the accounting for equity securities in Topic 321, the accounting for equity method investments in Topic 323, and the accounting for certain forward contracts and purchased options in Topic 815. The guidance is effective for interim and annual periods beginning after December 15, 2020. Effective January 1, 2021, the Company adopted this standard on a prospective basis. The impact of adoption of this standard on the Company’s consolidated financial statements was immaterial.

In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity (ASU 2020-06), which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts on an entity’s own equity. This guidance also eliminates the treasury stock method to calculate diluted earnings per share for convertible instruments and requires the use of the if-converted method. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021, with early adoption permitted. Effective January 1, 2021, the Company early adopted ASU 2020-06 using the modified retrospective approach. Adoption of the new standard resulted in an increase of retained earnings in an amount of $2,884, a decrease of an additional paid-in capital in an amount of $36,336, an increase of convertible senior notes, net, in an amount of $45,282 and a decrease of deferred tax liabilities, net, in an amount of $11,830. Interest expense recognized in future periods will be reduced as a result of accounting for the convertible debt instrument as a single liability measured at its amortized cost. The impact of adoption of this standard on the Company’s earnings per share was immaterial.

The consolidated financial statements for the year ended December 31, 2021 are presented under the new standards, while comparative periods presented are not adjusted and continue to be reported in accordance with the Company’s historical accounting policy.

af.Certain prior period amounts have been reclassified to conform to the current period presentation.