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Nature of Business, Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Oct. 31, 2022

Nature of Business, Basis of Presentation and Significant Accounting Policies

Percent of customer consolidated revenues

The percent of consolidated revenues from each customer for the years ended October 31, 2022, 2021 and 2020, respectively, are presented below.

​

​	​	​	​	​	​	​	​
​		2022		2021		2020
Korea Fuel Cell Co., Ltd (KFC)	​	46	%	—	%	—	%
Connecticut Light and Power		14	%	20	%	17	%
ExxonMobil Technology and Engineering Company (f/k/a ExxonMobil Research and Engineering Company) (EMTEC)		8	%	29	%	32	%
Korea Southern Power Company (KOSPO)	​	6	%	12	%	—	%
U.S. Department of Energy (DOE)		6	%	8	%	9	%
Long Island Power Authority (LIPA)	​	5	%	—	%	—	%
Pfizer, Inc.		2	%	5	%	4	%
UIL Holdings Corporation		—	%	5	%	18	%
Total		87	%	79	%	80	%

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Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.

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