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Nature of Business, Basis of Presentation and Significant Accounting Policies (Tables)
 12 Months Ended
Oct. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]  
Percent of Customer Consolidated Revenues

The percent of consolidated revenues from each customer for the years ended October 31, 2020, 2019 and 2018, respectively, are presented below.

 

 

 

2020

 

 

2019

 

 

2018

 

ExxonMobil Research and Engineering Company (EMRE)

 

 

32

%

 

 

40

%

 

 

6

%

UIL Holdings Corporation

 

 

18

%

 

 

1

%

 

 

2

%

Connecticut Light and Power

 

 

17

%

 

 

11

%

 

 

—

%

U.S. Department of Energy (DOE)

 

 

9

%

 

 

6

%

 

 

8

%

Clearway Energy (formerly NRG Yield, Inc.)

 

 

6

%

 

 

1

%

 

 

15

%

Pfizer, Inc.

 

 

4

%

 

 

6

%

 

 

4

%

Dominion Bridgeport Fuel Cell, LLC (a)

 

 

—

%

 

 

13

%

 

 

3

%

POSCO Energy

 

 

—

%

 

 

3

%

 

 

5

%

Hanyang Industrial Development Co., Ltd. (HYD)

 

 

—

%

 

 

—

%

 

 

35

%

AEP Onsite Partners, LLC

 

 

—

%

 

 

—

%

 

 

10

%

Total

 

 

86

%

 

 

81

%

 

 

88

%

 

(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.