UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 410,660	$ 567,992
Restricted cash	39,770	34,636
Accounts receivable, net	3,832	6,779
Inventory	58,745	59,026
Vendor deposits	12,061	11,756
Contract assets, current	39,438	13,972
Prepaid expenses	3,389	2,701
Grant receivable, net	21,369	11,028
Other current assets	701	590
Total current assets	589,965	708,480
Property, plant and equipment, net	145,774	114,415
Intangible assets, net	1,287	979
Goodwill	4,331	4,331
Operating lease right-of-use asset, net	21,469	20,420
Long-term restricted cash	21,938	21,938
Other assets, net	14,560	14,634
Total assets	799,324	885,197
Current liabilities:
Accounts payable	77,079	99,915
Accrued expenses	39,196	25,794
Operating lease liability, current	1,996	1,960
Long-term debt, current	0	372
Contract liabilities, current	6,718	14,975
Other current liabilities	326	524
Total current liabilities	125,315	143,540
Long-term liabilities:
Operating lease liability	21,374	19,182
Long-term debt	506,399	662,467
Notes payable - related party	113,120	150,427
Contract liabilities, long-term	2,234	2,506
Other liabilities	394	427
Total long-term liabilities	959,783	1,618,977
Total liabilities	1,085,098	1,762,517
COMMITMENTS AND CONTINGENCIES (NOTE 14)
SHAREHOLDERS' DEFICIT
Common stock, $0.0001 par value, 600,000,000 shares authorized, 339,459,021 and 337,132,374 shares outstanding on March 31, 2026 and December 31, 2025, respectively	32	32
Additional paid in capital	1,247,734	427,722
Accumulated deficit	(2,026,936)	(2,535,819)
Total shareholders' deficit	(868,438)	(2,238,862)
Total liabilities, preferred stock and shareholders' deficit	799,324	885,197
Series B Preferred Stock
Long-term liabilities:
SERIES B PREFERRED STOCK - related party	582,664	1,361,542
Nonrelated Party
Long-term liabilities:
Warrants liability	112,777	313,253
SHAREHOLDERS' DEFICIT
Accumulated other comprehensive income	0	10
Related Party
Current liabilities:
Accounts payable	453	285
Long-term liabilities:
Warrants liability	203,485	470,715
SHAREHOLDERS' DEFICIT
Accumulated other comprehensive income	$ (89,268)	$ (130,807)

Warrants and Rights Outstanding, Noncurrent

No definition available.

Name:	eose_WarrantsAndRightsOutstandingNoncurrent
Namespace Prefix:	eose_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).