Property, plant and equipment at December 31, 2025 and 2024 consisted of the following (in thousands):

December 31,

December 31,

  ​ ​ ​

2025

  ​ ​ ​

2024

Land

$

6,150

$

5,597

Construction in progress

124,727

502,936

Equipment, including hydrogen production plants

165,510

383,955

Leasehold improvements

8,722

15,633

Property, plant, and equipment

 

305,109

 

908,121

Less: accumulated depreciation

 

(24,108)

 

(41,792)

Property, plant, and equipment, net

$

281,001

$

866,329

Historical Timeline

Fiscal YearFiled
2025Mar 2, 2026Showing above
2024Mar 3, 2025
2023Feb 29, 2024
2022Mar 1, 2023
2021Mar 1, 2022
2020May 14, 2021
2019Mar 10, 2020
2018Mar 13, 2019
2017Mar 12, 2018
2016Mar 10, 2017
2015Mar 15, 2016

About PP&E Disclosures

The PP&E disclosure details a company's physical asset base — land, buildings, machinery, and equipment — along with the depreciation methods and useful life assumptions that determine how these costs flow through the income statement. Capitalization policy thresholds reveal management's judgment on the boundary between expense and asset, directly affecting both reported earnings and asset values.

Key signals: changes in estimated useful lives or depreciation methods can materially shift reported earnings without any operational change. Compare capital expenditures against depreciation expense — when capex consistently trails depreciation, the asset base may be aging and underinvested. Watch for large asset impairments or write-downs that signal overvalued carrying amounts. Asset retirement obligations reveal future environmental or decommissioning costs that are often underappreciated. Compare PP&E intensity (PP&E-to-revenue) against industry peers to assess capital efficiency and competitive positioning.