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

12 Months Ended

Oct. 31, 2021

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, 2021, 2020 and 2019, respectively, are presented below.

	2021		2020		2019
ExxonMobil Research and Engineering Company (EMRE)	29	%	32	%	40	%
Connecticut Light and Power	20	%	17	%	11	%
Korea Southern Power Company (KOSPO)	12	%	—	%	—	%
U.S. Department of Energy (DOE)	8	%	9	%	6	%
UIL Holdings Corporation	5	%	18	%	1	%
Pfizer, Inc.	5	%	4	%	6	%
Dominion Bridgeport Fuel Cell, LLC (a)	—	%	—	%	13	%
Total	79	%	80	%	77	%

(a) All of the outstanding membership interests in Dominion Bridgeport Fuel Cell, LLC were acquired by the Company on May 9, 2019. As a result of this acquisition, revenue is now (subsequent to the acquisition) recognized under the related PPA for electricity sales to Connecticut Light and Power.