1) Apex Clean Energy Management LLC

2) Dairyland Power Cooperative

3) EDF Renewables, Inc.

4) Enbridge Energy Partners LP

5) Great River Energy

6) ITC Holdings Corp (Intl Transmission Co)

7) MN State Building & Construction Trades Council

8) MN Transmission Owners

9) National Grid Renewables

10) ONEOK

11) Otter Tail Power Company

12) Summit Carbon Solutions

13) Xcel Energy Services, Inc.