
	Estimated Useful lives			March 31, 2026		December 31, 2025
Equipment	5	-	10 years	$	85,478	$	79,272
Furniture	5	-	10 years	3,578		3,149
Leasehold improvements	Lesser of useful life/ remaining lease			14,153		14,146
Tooling	2	-	3 years	16,926		16,192
Construction in progress (“CIP”)				65,231		36,644
Total				185,366		149,403
Less: Accumulated depreciation				(39,592)		(34,988)
Total property, plant and equipment, net				$	145,774	$	114,415

Depreciation expense related to property, plant and equipment was $5,303 and $2,656 for the three months ended March 31, 2026 and 2025, respectively.

The Company recorded a loss from write-down of property, plant and equipment of $71 and $561 for the three months ended March 31, 2026.and 2025, respectively. The write-downs were mainly due to design changes from the Z3-Phase 1 to Z3-Phase 2 production in which the Phase 1 production assets could not be utilized or repurposed for Phase 2 production. Additionally, the loss from write-down of property, plant and equipment contains costs for disposal of miscellaneous equipment and tooling that cannot be repurposed.

For the three months ended March 31, 2026, capitalized interest costs recognized was $1,024. There were no capitalized interest costs recognized for the three months ended March 31, 2025.