NOTE

5—

FAIR VALUE OF FINANCIAL INSTRUMENTS

The fair value measurement guidance clarifies that fair value is an exit price, representing the amount that would be received upon selling an asset or paid upon transferring 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 liability. The guidance establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level

measurements) and the lowest priority to unobservable inputs (Level

measurements). The

three

levels of the fair value hierarchy under the fair value measurement guidance are described below:

Level

— Unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities.

Level

— Quoted prices in markets that are

not

active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability.

Level

— Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or

market activity).

The following table sets forth certain fair value information at

September 30, 2018

and

December 31, 2017

for financial assets and liabilities measured at fair value by level within the fair value hierarchy, as well as cost or amortized cost. As required by the fair value measurement guidance, assets and liabilities are classified in their entirety based on the lowest level of inputs that is significant to the fair value measurement.

				September 30, 2018
				Fair Value
	Carrying Value at September 30, 2018			Total			Level 1		Level 2			Level 3
	(Dollars in thousands)
Assets:
Current assets:
Cash equivalents (including restricted cash accounts)	$	15,941		$	15,941		$	15,941	$	—		$	—
Derivatives:
Contingent receivable (1)		105			105			—		—			105
Liabilities:
Current liabilities:
Derivatives:
Contingent payables (1)		(13,798	)		(13,798	)		—		—			(13,798	)
Currency forward contracts (2)		(210	)		(210	)		—		(210	)		—
	$	2,038		$	2,038		$	15,941	$	(210	)	$	(13,693	)

				December 31, 2017
				Fair Value
	Carrying Value at December 31, 2017			Total			Level 1		Level 2		Level 3
	(Dollars in thousands)
Assets
Current assets:
Cash equivalents (including restricted cash accounts)	$	18,359		$	18,359		$	18,359	$	—	$	—
Derivatives:
Contingent receivable (1)		108			108			—		—		108
Currency forward contracts (2)		992			992			—		992		—
Liabilities:
Current liabilities:
Derivatives:
Contingent payables (1)		(13,904	)		(13,904	)		—		—		(13,904	)
Warrants (1)		(3,967	)		(3,967	)		—		—		(3,967	)
	$	1,588		$	1,588		$	18,359	$	992	$	(17,763	)

( 1 )	These amounts relate to contingent receivables and payables and warrants relating to acquisition of substantially all of the assets of Viridity Energy, Inc. and to the Guadeloupe power plant purchase transaction, valued primarily based on unobservable inputs and are included within “Prepaid expenses and other”, “Accounts payable and accrued expenses” and “Other long-term liabilities” on September 30, 2018 and 2017 in the consolidated balance sheets with the corresponding gain or loss being recognized within Derivatives and foreign currency transaction gains (losses) in the consolidated statement of operations and comprehensive income.

( 2 )	These amounts relate to currency forward contracts valued primarily based on observable inputs, including forward and spot prices for currencies, net of contracted rates and then multiplied by notional amounts, and are included within “Prepaid expenses and other” and “Accounts payable and accrued expenses”, as applicable, on September 30, 2018 and December 31, 2017, in the consolidated balance sheet with the corresponding gain or loss being recognized within “Derivatives and foreign currency transaction gains (losses)” in the consolidated statement of operations and comprehensive income.

The amounts set forth in the tables above include investments in debt instruments and money market funds (which are included in cash equivalents). Those securities and deposits are classified within Level

of the fair value hierarchy because they are valued using quoted market prices in an active market.

The following table presents the amounts of gain (loss) recognized in the consolidated statements of operations and comprehensive income on derivative instruments

not

designated as hedges (in thousands):

		Amount of recognized gain (loss)
Derivatives not designated as	Location of recognized gain	Three Months Ended September 30,						Nine Months Ended September 30,
hedging instruments	(loss)	2018			2017			2018			2017


Put options on natural gas price	Derivatives and foreign currency transaction gains (losses)		—			(121	)		—			(362	)
Contingent considerations	Derivative and foreign currency transaction gains (losses)		—			(19	)		—			(114	)
Currency forward contracts	Derivative and foreign currency and transaction gains (losses)		(198	)		(887	)		(1,655	)		2,832
		$	(198	)	$	(1,027	)	$	(1,655	)	$	2,356

January 2017,

the Company entered into Henry Hub Natural Gas Future contracts under which it bought a number of put options covering a notional quantity of approximately

4.1

million British Thermal Units with exercise prices of

per put option and expiration dates ranging from

January 26, 2017

until

November 27, 2017

in order to reduce its exposure to fluctuations in natural gas prices under its PPAs with Southern California Edison. The Company paid an aggregate amount of approximately

$0.7

million for these put options.

The foregoing future and forward transactions were

not

designated as hedge transactions and are marked to market with the corresponding gains or losses recognized within “Derivatives and foreign currency transaction gains (losses)”.

There were

transfers of assets or liabilities between Level

Level

and Level

during the

nine

months ended

September 30, 2018.

The fair value of the Company’s long-term debt approximates its carrying amount, except for the following:

	Fair Value				Carrying Amount
	September 30, 2018		December 31, 2017		September 30, 2018		December 31, 2017
	(Dollars in millions)				(Dollars in millions)
Olkaria III Loan - OPIC		214.2		234.6		215.1		228.6
Olkaria IV Loan - DEG 2		50.1		50.7		50.0		50.0
Amatitlan Loan		30.8		32.8		30.6		33.3
Senior Secured Notes:
OrCal Geothermal Inc. ("OrCal")		24.7		34.2		24.0		32.1
OFC 2 LLC ("OFC 2")		215.9		234.6		221.8		232.5
Don A. Campbell 1 ("DAC 1")		79.0		85.5		84.7		88.3
USG Prudential - NV		29.4		—		28.2		—
USG Prudential - ID		18.7		—		18.9		—
USG DOE		47.2		—		51.4		—
Senior Unsecured Bonds		195.7		200.3		204.3		204.3
Senior Unsecured Loan		99.7		—		100.0		—
Other long-term debt		5.4		7.0		6.4		7.9

The fair value of the long-term debt is determined by a valuation model, which is based on a conventional discounted cash flow methodology and utilizes assumptions of current borrowing rates. The fair value of revolving lines of credit is determined using a comparison of market-based price sources that are reflective of similar credit ratings to those of the Company.

The carrying value of financial instruments such as revolving lines of credit and deposits approximates fair value.

The following table presents the fair value of financial instruments as of

September 30, 2018:

	Level 1		Level 2		Level 3		Total
	(Dollars in millions)
Olkaria III - OPIC		—		—		214.2		214.2
Olkaria IV - DEG 2		—		—		50.1		50.1
Amatitlan Loan		—		30.8		—		30.8
Senior Secured Notes:
OrCal Senior Secured Notes		—		—		24.7		24.7
OFC 2 Senior Secured Notes		—		—		215.9		215.9
DAC 1 Senior Secured Notes		—		—		79.0		79.0
USG Prudential - NV		—		—		29.4		29.4
USG Prudential - ID		—		—		18.7		18.7
USG DOE		—		—		47.2		47.2
Senior Unsecured Bonds		—		—		195.7		195.7
Senior Unsecured Loan		—		—		99.7		99.7
Other long-term debt		—		—		5.4		5.4
Revolving lines of credit		—		209.5		—		209.5
Deposits		14.2		—		—		14.2

The following table presents the fair value of financial instruments as of

December

31,

2017:

	Level 1		Level 2		Level 3		Total
	(Dollars in millions)
Olkaria III Loan - OPIC	$	—	$	—	$	234.6	$	234.6
Olkaria IV - DEG 2						50.7		50.7
Amatitlan Loan		—		32.8		—		32.8
Senior Secured Notes:
OFC Senior Secured Notes		—		—		—		—
OrCal Senior Secured Notes		—		—		34.2		34.2
OFC 2 Senior Secured Notes		—		—		234.6		234.6
DAC 1 Senior Secured Notes		—		—		85.5		85.5
Senior Unsecured Bonds		—		—		200.3		200.3
Other long-term debt		—		—		7.0		7.0
Revolving lines of credit		—		51.5		—		51.5
Deposits		15.6		—		—		15.6