The number of hydrogen production plant.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of expense for allocation of cost of tangible asset over its useful life directly used in production of good and rendering of service.

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Amount of interest capitalized during the period.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Property, Plant and Equipment (Details) $ in Thousands	3 Months Ended		6 Months Ended
Property, Plant and Equipment (Details) $ in Thousands	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Plant	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Property, plant and equipment
Property, plant, and equipment	$ 1,618,676		$ 1,618,676		$ 1,517,633
Less: accumulated depreciation	(108,983)		(108,983)		(81,456)
Property, plant, and equipment, net	1,509,693		$ 1,509,693		1,436,177
Number of hydrogen production plant \| Plant			3
Capitalized interest	3,100	$ 2,000	$ 5,200	$ 4,000
Depreciation expense	13,100	$ 7,300	24,700	$ 12,800
Land
Property, plant and equipment
Property, plant, and equipment	5,706		5,706		6,049
Construction in progress
Property, plant and equipment
Property, plant, and equipment	891,606		891,606		1,109,896
Hydrogen production plants
Property, plant and equipment
Property, plant, and equipment	364,703		364,703		77,107
Building and leasehold improvements
Property, plant and equipment
Property, plant, and equipment	104,650		104,650		95,229
Software, machinery and equipment
Property, plant and equipment
Property, plant, and equipment	$ 252,011		$ 252,011		$ 229,352