| A&N Electric Cooperative | Leo Radkowski
757-787-9750 ext. 367 | Maryland, Virginia |
| AEP Ohio | Brody Fry
330-438-7820 | Ohio |
| AES Ohio | Rachele Perrin
937-259-7893 | Ohio |
| Alabama Power Co. | Elizabeth Kuhn
205-992-5040 | Alabama |
| Appalachian Power Company | Brody Fry
330-438-7820 | Tennessee, Virginia, West Virginia |
| Atlantic City Electric | Joe Cohen
703-851-8120 | New Jersey |
| Atlanta Gas Light | Elizabeth Kuhn
205-992-5040 | Georgia |
| Baltimore Gas & Electric Co. | Gabriel Nunez
667-313-3335 | Maryland |
| Black Hills Energy | Carol Thomas | Arkansas, Colorado, Iowa, Kansas, Nebraska, South Dakota, Wyoming |
| Canoochee EMC | Jeffrey Barnard | Georgia |
| Cascade Natural Gas | Chanda Marek | Oregon, Washington |
| Cass County Electric Cooperative | Paul Matthys
701-356-4400 | North Dakota |
| CenterPoint Energy | Calvin Roberts
713-207-4322 | Arkansas, Indiana, Louisiana, Minnesota, Mississippi, Ohio, Oklahoma, Texas |
| Chattanooga Gas | Elizabeth Kuhn
205-992-5040 | Tennessee |
| Chesapeake Utilities Corporation | Kira Lake
386-785-8188 | Delaware, Maryland |
| City of Palo Alto Utilities | Brian Ward
650-329-2251 | California |
| Consolidated Edison Company of NY | Regina Y. Brewton-Smith
212-460-4549 | New York |
| CPS Energy | Joel Goode
210-353-5613
Christela Morales-Salinas
210-353-3617 | Texas |
| Delmarva Power | Joe Cohen
703-851-8120 | Delaware, Maryland |
| Dominion Energy | Fred Parry
703-581-8851 | Idaho, North Carolina, Ohio, South Carolina, Utah, Virginia, West Virginia, Wyoming |
| Dominion Energy South Carolina | Fred Parry
703-581-8851
Larki Robinson
803-217-9220 | South Carolina |
| Duke Energy | Ashley Edwards
216-513-7739 | North Carolina, South Carolina, Florida, Indiana, Ohio, Kentucky |
| Elizabethtown Gas | | New Jersey |
| Elkton Gas | Kira Lake
386-785-8188 | Maryland |
| Entergy | Adam Jones | Arkansas, Louisiana, Mississippi, Texas |
| Evergy | Kevin Brannan
816-652-1494 | Kansas, Missouri |
| Eversource Energy | Robert Laurence
781-441-8469 | Connecticut, Massachusetts, New Hampshire |
| Florida City Gas | Kyle Muir
772-224-3923 | Florida |
| Florida Power & Light Co. | Christopher Vick
850-872-3281 | Florida |
| Florida Public Utilities | Kira Lake
386-785-8188 | Florida |
| Georgia Power Co. | Elizabeth Kuhn
205-992-5040 | Georgia |
| Guam Power Authority | Francis Iriarte
671-648-3102 | Guam |
| Hawaiian Electric Co., Inc. | Blaine Cacho
808-543-7938 | Hawaii |
| Indiana Michigan Power | Brody Fry
330-438-7820 | Indiana, Michigan |
| Kansas Gas Service | Hillary McIntosh
918-906-9532 | Kansas |
| Kentucky Power | Brody Fry
330-438-7820 | Kentucky |
| Liberty Utilities | Clint Cox
706-505-0196 | Arizona, Arkansas, California, Georgia, Illinois, Iowa, Kansas, Massachusetts, Missouri, New Hampshire, New York, Oklahoma, Texas |
| Mississippi Power Co. | Joe Bosco
228-938-3979 | Mississippi |
| National Grid | Becky Badalato
315-785-7227 | Massachusetts, New York, Rhode Island |
| New Mexico Gas Company | Savina Martinez
505-607-3533 | New Mexico |
| Nicor Gas | Elizabeth Kuhn
205-992-5040 | Illinois |
| Nolin RECC | Greg Lee
270-766-7206 | Kentucky |
| Nueces Electric Cooperative | Lawrence Rahmes | Texas |
| Oklahoma Gas & Electric Co. | Michelle Rodriguez-Pico
405-553-3314
Kalin Dunn | Arkansas, Oklahoma |
| Oklahoma Natural Gas | Hillary McIntosh
918-906-9532 | Oklahoma |
| Omaha Public Power District (OPPD) | David Ortiz
531-226-3396 | Nebraska |
| Orange and Rockland Utilities | Daniel Rogers
845-577-3192 | New Jersey, New York, Pennsylvania |
| PECO | Nicholas Scarboro
Dana Hilton | Pennsylvania |
| Peoples Gas Systems Inc. | Maru Sims
813-228-4254 | Florida |
| Pepco | Joe Cohen
703-851-8120 | District of Columbia, Maryland |
| Philadelphia Gas Works | Matt Ogden
215-684-6789 | Pennsylvania |
| Piedmont Natural Gas | Ashley Edwards
216-513-7739 | North Carolina, South Carolina, Tennessee |
| Plumas-Sierra Rural Electric Cooperative | Scott Welch
530-251-7448 | California, Nevada |
| Public Service Company of New Mexico | Manuel Quintana
505-241-4716 | New Mexico |
| Public Service Company of Oklahoma | Brody Fry
330-438-7820 | Oklahoma |
| Puget Sound Energy | Matt Montagner
206-586-7712 | Washington |
| San Diego Gas & Electric | Joe Pierzina
619-787-9650 | California |
| Sandhills Utility Services, LLC | Jeff Brown
910-496-2207 | North Carolina |
| Southern California Gas Co. | Oscar Contreras | California |
| Southern Co. | Elizabeth Kuhn
205-992-5040 | Alabama, Georgia, Illinois, Mississippi, Tennessee, Virginia |
| Southern Company Gas | Elizabeth Kuhn
205-992-5040 | Georgia, Illinois, Tennessee, Virginia |
| Southern Maryland Electric Coop | Lezael Rorie
301-274-8214 | Maryland |
| Southwest Gas Corporation | James Stein
702-876-7282 | Arizona, California, Nevada |
| Southwestern Electric Power Company | Brody Fry
330-438-7820 | Arkansas, Louisiana, Texas |
| TECO Energy | Maru Sims
813-228-4254 | Florida |
| Tennessee Valley Authority | Brent Powell | Alabama, Georgia, Kentucky, Mississippi, North Carolina, Tennessee, Virginia |
| Texas Gas Service | Hillary McIntosh
918-906-9532 | Texas |
| Tucson Electric Power (UniSource Energy Company) | | Arizona |
| Virginia Natural Gas | Elizabeth Kuhn
205-992-5040 | Virginia |
| Washington Gas | Natalia Norko
202-295-7472 | District of Columbia, Maryland, Virginia |
