| SOUTHERN COMPANY | | 23 | $60.0M | Q3 2026 |
| KOCH GOVERNMENT AFFAIRS, LLC | | 21 | $56.5M | Q3 2026 |
| PACIFIC GAS AND ELECTRIC COMPANY | | 23 | $35.4M | Q3 2026 |
| SEMPRA | | 23 | $19.0M | Q3 2026 |
| NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATION (NRECA) | | 22 | $19.0M | Q3 2026 |
| NATIONAL ASSOCIATION OF MANUFACTURERS | | 5 | $15.3M | Q3 2022 |
| EXELON BUSINESS SERVICES LLC | | 19 | $10.5M | Q3 2026 |
| INDUSTRIAL ENERGY CONSUMERS OF AMERICA | CARBONLEAF LLC | 22 | $9.9M | Q2 2026 |
| LYONDELL CHEMICAL COMPANY | | 10 | $9.3M | Q2 2023 |
| NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION, INC. | | 23 | $8.1M | Q3 2026 |
| AVANGRID INC | | 23 | $7.8M | Q3 2026 |
| NATIONAL GRID USA | | 23 | $7.3M | Q3 2026 |
| AMERICAN FEDERATION OF STATE COUNTY AND MUNICIPAL EMPLOYEES | | 11 | $7.0M | Q3 2026 |
| AMERICAN PUBLIC POWER ASSOCIATION | | 23 | $6.1M | Q3 2026 |
| COBANK ACB | | 23 | $5.7M | Q3 2026 |
| PUGET SOUND ENERGY | | 23 | $5.5M | Q3 2026 |
| NATIONAL FUEL GAS COMPANY | | 22 | $5.1M | Q3 2026 |
| ORACLE CORPORATION | | 2 | $4.4M | Q3 2022 |
| LARGE PUBLIC POWER COUNCIL | | 14 | $3.6M | Q3 2026 |
| NATIONAL RETAIL FEDERATION | | 2 | $3.5M | Q1 2022 |
| SANTA CLARA VALLEY WATER DISTRICT | | 18 | $2.6M | Q2 2026 |
| NEXTERA ENERGY INC | | 2 | $2.6M | Q3 2021 |
| ASSOCIATION OF CALIFORNIA WATER AGENCIES | | 22 | $2.4M | Q2 2026 |
| OGE ENERGY CORP | WILLIAMS AND JENSEN, PLLC | 23 | $2.2M | Q3 2026 |
| BURNS & MCDONNELL ENGINEERING COMPANY INC | VENN STRATEGIES | 23 | $2.2M | Q3 2026 |
| WASHINGTON GAS LIGHT COMPANY | WGL | 16 | $2.2M | Q3 2024 |
| SHELL USA, INC. (FKA SHELL OIL COMPANY) | | 1 | $1.7M | Q2 2023 |
| AMEREN SERVICES | | 3 | $1.6M | Q3 2021 |
| GREAT BASIN TRANSMISSION, LLC | CASSIDY & ASSOCIATES, INC. | 23 | $1.4M | Q3 2026 |
| LS POWER | CASSIDY & ASSOCIATES, INC. | 23 | $1.4M | Q3 2026 |
| ONCOR ELECTRIC DELIVERY | OGR | 23 | $1.4M | Q3 2026 |
| SOUTHERN COMPANY SERVICES INC | HUNTON ANDREWS KURTH LLP (FORMERLY HUNTON & WILLIAMS LLP) | 23 | $1.4M | Q3 2026 |
| NATIONAL GRID USA SERVICE COMPANY, INC. D/B/A NATIONAL GRID | FORBES-TATE | 18 | $1.4M | Q3 2026 |
| TACOMA PUBLIC UTILITIES | | 22 | $1.3M | Q2 2026 |
| XCEL ENERGY SERVICES, INC. | S-3 GROUP | 23 | $1.2M | Q3 2026 |
| EVERGY FORMERLY KANSAS CITY POWER AND LIGHT COMPANY | HB STRATEGIES | 23 | $1.2M | Q3 2026 |
| LG&E AND KU ENERGY LLC | | 20 | $1.1M | Q3 2025 |
| MIDCONTINENT INDEPENDENT TRANSMISSION SYSTEM OPERATOR (MISO) FKA MIDWEST INDEPEN | THE HARRIS FIRM | 22 | $1.1M | Q2 2026 |
| EXELON CORPORATION | FORBES-TATE | 19 | $1.1M | Q3 2026 |
| OGLETHORPE POWER CORPORATION | | 23 | $1.0M | Q3 2026 |