The following table summarizes the key classifications of property, plant, and equipment included in the condensed consolidated balance sheets:


	March 31,		December 31,
$ in thousands	2026		2025
La Porte Demonstration Facility	$	13,484	$	13,484
Furniture and equipment	132		132
Assets acquired under finance lease	45		45
Construction-in-progress	28,590		20,062
Total property, plant, and equipment, gross	42,251		33,723
Accumulated depreciation and amortization (1)	(1,690)		(965)
Total property, plant, and equipment, net	$	40,561	$	32,758

During the first quarter of 2025, as a result of the management’s assessment of the probability of the construction of the Oxy-Combustion Cycle (“SN1”) due to the factors discussed above, $56.1 million of costs previously included in Construction-in-progress were expensed. This amount is included in impairment and other charges in the condensed consolidated statements of operations and comprehensive loss.

Refer to Note 5 — Goodwill and Intangible Assets for discussion of impairments of the Developed Technology Asset Group recognized during the three months ended March 31, 2025.

The following table presents the Company’s depreciation and amortization expense for the following periods:


	Three Months Ended March 31,
$ in thousands		2026		2025
Depreciation and amortization expense		$	725	$	4,735

The Company regularly evaluates whether events or changes in circumstances warrant a revision to the remaining estimated useful lives of its long-lived assets.