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Leases
 9 Months Ended
Sep. 30, 2025
Leases [Abstract]  
Leases Leases
Lessor contracts
Fuel provider agreements
Fuel provider agreements ("FPAs") are for the sale of brown gas, service and maintenance of sites. The Company is contracted to design and build a Fueling Station on the customer's property in exchange for the Company providing CNG/RNG to the customer for a determined number of years. We have determined that the FPAs contain a lease component for the use of the Fueling Station in addition to the non-lease components related to providing CNG/RNG as well as providing all-inclusive maintenance and warranty services.
Power purchase agreements
Power purchase agreements ("PPAs") are for the sale of electricity generated at our Renewable Power facilities. All of our Renewable Power facilities operate under fixed pricing or indexed pricing based on market prices. Two of our Renewable Power facilities transfer the right to control the use of the power plant to the purchaser and are therefore classified as operating leases.
Three months ended September 30,Nine months ended September 30,
2025 20242025 2024
FPAs (1)
$5,240 $1,154 $10,044 $2,861 
PPAs (2)
$228 $267 $875 $696 
(1) Included in Fuel Station Service revenues
(2) Included in Renewable Power revenues
Lessee contracts
During the nine months ended September 30, 2025, the Company derecognized the right-of-use (ROU) asset and corresponding lease liability associated with a site lease following a formal release from all future lease obligations by the vendor under the current agreement. The ROU asset had a carrying value of approximately $5,397 at the time of termination. The derecognition resulted in $600 gain recognized in other income.
Leases Leases
Lessor contracts
Fuel provider agreements
Fuel provider agreements ("FPAs") are for the sale of brown gas, service and maintenance of sites. The Company is contracted to design and build a Fueling Station on the customer's property in exchange for the Company providing CNG/RNG to the customer for a determined number of years. We have determined that the FPAs contain a lease component for the use of the Fueling Station in addition to the non-lease components related to providing CNG/RNG as well as providing all-inclusive maintenance and warranty services.
Power purchase agreements
Power purchase agreements ("PPAs") are for the sale of electricity generated at our Renewable Power facilities. All of our Renewable Power facilities operate under fixed pricing or indexed pricing based on market prices. Two of our Renewable Power facilities transfer the right to control the use of the power plant to the purchaser and are therefore classified as operating leases.
Three months ended September 30,Nine months ended September 30,
2025 20242025 2024
FPAs (1)
$5,240 $1,154 $10,044 $2,861 
PPAs (2)
$228 $267 $875 $696 
(1) Included in Fuel Station Service revenues
(2) Included in Renewable Power revenues
Lessee contracts
During the nine months ended September 30, 2025, the Company derecognized the right-of-use (ROU) asset and corresponding lease liability associated with a site lease following a formal release from all future lease obligations by the vendor under the current agreement. The ROU asset had a carrying value of approximately $5,397 at the time of termination. The derecognition resulted in $600 gain recognized in other income.
Leases Leases
Lessor contracts
Fuel provider agreements
Fuel provider agreements ("FPAs") are for the sale of brown gas, service and maintenance of sites. The Company is contracted to design and build a Fueling Station on the customer's property in exchange for the Company providing CNG/RNG to the customer for a determined number of years. We have determined that the FPAs contain a lease component for the use of the Fueling Station in addition to the non-lease components related to providing CNG/RNG as well as providing all-inclusive maintenance and warranty services.
Power purchase agreements
Power purchase agreements ("PPAs") are for the sale of electricity generated at our Renewable Power facilities. All of our Renewable Power facilities operate under fixed pricing or indexed pricing based on market prices. Two of our Renewable Power facilities transfer the right to control the use of the power plant to the purchaser and are therefore classified as operating leases.
Three months ended September 30,Nine months ended September 30,
2025 20242025 2024
FPAs (1)
$5,240 $1,154 $10,044 $2,861 
PPAs (2)
$228 $267 $875 $696 
(1) Included in Fuel Station Service revenues
(2) Included in Renewable Power revenues
Lessee contracts
During the nine months ended September 30, 2025, the Company derecognized the right-of-use (ROU) asset and corresponding lease liability associated with a site lease following a formal release from all future lease obligations by the vendor under the current agreement. The ROU asset had a carrying value of approximately $5,397 at the time of termination. The derecognition resulted in $600 gain recognized in other income.