Intangible Assets, Net

9 Months Ended

Sep. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

6. Intangible Assets, Net

Intangible assets, net, consisted of the following at September 30, 2022 and December 31, 2021:

	September 30, 2022
	Cost		Accumulated Amortization			Intangible Assets, Net		Weighted Average Amortization Period (Years)
Power purchase agreements	$	8,999	$	(7,436	)	$	1,563		18.1
Transmission/distribution interconnection		1,600		(945	)		655		15.1
CNG sales contract		807		(779	)		28		10.0
Intellectual property		43		(23	)		20		5.0
Total intangible assets	$	11,449	$	(9,183	)	$	2,266

	December 31, 2021
	Cost		Accumulated Amortization			Intangible Assets, Net		Weighted Average Amortization Period (years)
Power purchase agreements	$	8,999	$	(6,986	)	$	2,013		18.1
Transmission/distribution interconnection		1,600		(865	)		735		15.1
CNG sales contract		807		(719	)		88		10.0
Intellectual property		43		(18	)		25		5.0
Total intangible assets	$	11,449	$	(8,588	)	$	2,861

The transmission/distribution interconnection represents an interconnector for one of the Company’s LFG recovery facilities. The interconnection construction was initially funded by a municipality. The Company is scheduled to repay the costs of this construction through April 1, 2023. The remaining liability of $121 under the Municipality loan is shown as part of current liabilities on its condensed consolidated balance sheet as of September 30, 2022. Please see Note 8. Borrowings, for additional information.

Amortization expense for the nine months ended September 30, 2022 and 2021 was $595 and $346, respectively. At September 30, 2022, estimated future amortization expense for intangible assets is as follows:

Three months ended December 31, 2022	$	198
Fiscal year:
2023		465
2024		275
2025		266
2026		238
Thereafter		824
	$	2,266