Sources and last check
We read each value from the official documents below. The approval column shows the docket, order or advice number that is printed on each sheet. Last check: October 16, 2026.
| Document | Used for | Effective | Approval |
| GMP Residential Service Rate Schedule, Company Designation 1, Tariff v. V.P.U.C. 10, Page 1 of 2 | Customer charge, energy charge | Bills rendered on or after October 1, 2026 | Not printed on the sheet |
| GMP Alternative Regulation Plan, Record of Filings, Tariff v. V.P.U.C. 10, Page 4 of 6 (Rate Plan and Storm Adjustments) | Rate plan and storm adjustments | October 1, 2026 to September 30, 2027 | Case No. 25-2967-TF (FY25 Earnings Sharing Adjustor); Case No. 26-1591-TF (not printed on the sheet) |
| Vermont PUC, Order Approving Efficiency Vermont's Energy Efficiency Charge Rates for 2026, Appendix A (Residential) | Energy efficiency charge | Bills rendered on and after February 1, 2026 | Case No. 25-1126-INV |
| GMP Residential Electric Assistance Program Rider, Tariff v. V.P.U.C. 10, Page 2 of 3 (EAP Fee) | Electric assistance program fee | Bills rendered on or after October 1, 2026 (fee in effect since March 5, 2023) | Not printed on the sheet |
Recent rate changes
| Charge | Date | Old value | New value |
Customer charge FY27 base rate increase of 5.51% (Case No. 26-0096-TF). | Bills rendered on or after October 1, 2026 | $0.63 per day | $0.66 per day |
Energy charge FY27 base rate increase of 5.51% (Case No. 26-0096-TF). | Bills rendered on or after October 1, 2026 | 21.457¢ per kWh | 22.639¢ per kWh |
Energy efficiency charge 2025 rate from the PUC order of 11/01/2024 in Case No. 24-1832-INV. | Bills rendered on and after February 1, 2026 | 1.106¢ per kWh | 1.074¢ per kWh |
Calculate what a change does to your bill. See all recent rate changes.
We read the Rate 1 sheet (bills rendered on or after October 1, 2026), the Record of Filings sheet (7.63% Rate Plan and Storm Adjustments, October 1, 2026 to September 30, 2027) and the Residential Electric Assistance Program Rider ($1.50 per meter per month) from the GMP rates page. The Vermont PUC approved the 5.51% base rate increase (Case No. 26-0096-TF, order of 9/30/2026) and the 7.63% line item (Case No. 26-1591-TF, order of 9/16/2026). The energy efficiency charge (1.074 cents per kWh) comes from Appendix A of the PUC order in Case No. 25-1126-INV. GMP says that the percentage applies to the customer charge and the kWh charge. The test bills are hand calculations. Method check: with the October 2025 values (Rate 1 sheet of October 1, 2025, 5.69%, 0.72% storm fund and the 2025 EEC of 1.106 cents), our method gives $149.08 for 533 kWh and 30 days. This is the total of the GMP sample energy statement (bill date 10/17/25), and each of its six lines agrees. GMP sample energy statement (bill date 10/17/25, 533 kWh, $149.08).
Commission check (2026-10-16). The Vermont PUC approved the compliance tariffs with the 5.51% base rate increase for bills rendered on or after October 1, 2026 (Case No. 26-0096-TF). The PUC approved the 7.63% Rate Plan and Storm Adjustments line item for October 1, 2026 (Case No. 26-1591-TF). GMP can change the line item each quarter. The FY25 earnings sharing part (1.87%) ends on March 30, 2027. Case No. 26-0096-TF, Order Approving Compliance Tariffs, September 30, 2026 (ePUC). Case No. 26-1591-TF, Order Approving Tariff Change, September 16, 2026 (ePUC). Case No. 25-1126-INV, Order Approving 2026 EEC Rates, October 31, 2025 (ePUC).