FCELCIK 886128

FUELCELL ENERGY INC

EDGAR filings

Customers

4 disclosed

Suppliers

None disclosed

Largest customer

15%

CNTHP · FY to 2025-10-31

Named-customer revenue

$38.0M

4 customers · FY to 2025-10-31

Latest period

Oct 31, 2025

10-K filed 2025-12-18

Band height is the estimated dollar value: the disclosed share × the discloser's revenue for that period (latest full year where available) or federal dollars obligated. Each side is scaled on its own; dashed outlines are named without a figure. Click a band to open its source.

Customers 4

Companies FCEL discloses as major customers, as a share of FCEL revenue. 4 active, 0 lapsed.

Company	% of FCEL revenue	Est. revenue	Period	Trend	Status	Source
CNTHP CONNECTICUT LIGHT & POWER CO	15%	$23.7M	FY 2025-10-31	−6.0pp	Active	10-K 2025-12-18
Years Ended October 31, 202520242023Gyeonggi Green Energy Co., Ltd. (“GGE”) 46% 18% —% Connecticut Light and Power 15% 21% 13% United Illuminating 7% 3% 5% ExxonMobil Technology and Engineering Company (f/k/a ExxonMobil Research and Engineering Company) ("EMTEC") 6% 8% 8% Esso Nederland B.V. 10-K filed 2025-12-18 Period FY 2024-11-01 to 2025-10-31 (15%), FY 2023-11-01 to 2024-10-31 (21%), FY 2022-11-01 to 2023-10-31 (13%)Accession 0001104659-25-122302
ExxonMobil Technology and Engineering Company Non-SEC ExxonMobil Technology and Engineering Company	6%	$9.5M	FY 2025-10-31	−2.0pp	Active	10-K 2025-12-18
Years Ended October 31, 202520242023Gyeonggi Green Energy Co., Ltd. (“GGE”) 46% 18% —% Connecticut Light and Power 15% 21% 13% United Illuminating 7% 3% 5% ExxonMobil Technology and Engineering Company (f/k/a ExxonMobil Research and Engineering Company) ("EMTEC") 6% 8% 8% Esso Nederland B.V. 10-K filed 2025-12-18 Period FY 2024-11-01 to 2025-10-31 (6%), FY 2023-11-01 to 2024-10-31 (8%), FY 2022-11-01 to 2023-10-31 (8%)Accession 0001104659-25-122302
AMRC Ameresco, Inc.	2%	$3.2M	FY 2025-10-31	−5.0pp	Active	10-K 2025-12-18
(“Esso”) 5% 10% 2% Ameresco/Sacramento Sewer 2% 7% —% Korea Southern Power Company ("KOSPO") 1% 1% 31% Korea Fuel Cell Co., Ltd. ("KFC") —% —% 16% Total 82% 68% 75% Derivatives We do not use derivatives for speculative or trading purposes. 10-K filed 2025-12-18 Period FY 2024-11-01 to 2025-10-31 (2%), FY 2023-11-01 to 2024-10-31 (7%)Accession 0001104659-25-122302
Korea Southern Power Company Non-SEC Korea Southern Power Company	1%	$1.6M	FY 2025-10-31	±0.0pp	Active	10-K 2025-12-18
(“Esso”) 5% 10% 2% Ameresco/Sacramento Sewer 2% 7% —% Korea Southern Power Company ("KOSPO") 1% 1% 31% Korea Fuel Cell Co., Ltd. ("KFC") —% —% 16% Total 82% 68% 75% Derivatives We do not use derivatives for speculative or trading purposes. 10-K filed 2025-12-18 Period FY 2024-11-01 to 2025-10-31 (1%), FY 2023-11-01 to 2024-10-31 (1%), FY 2022-11-01 to 2023-10-31 (31%)Accession 0001104659-25-122302

Unnamed major customers

Disclosed without names in the fiscal year ending 2025-10-31. Identities are not inferred.

Top Customers82%

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