Cass County Elec Coop Inc Electricity Rates and Average Bill (North Dakota)
Data through June 2026 (the latest month EIA has published) · Updated September 03, 2026
As of June 2026, Cass County Elec Coop Inc's residential customers in North Dakota paid an average effective rate of 14.27¢/kWh with an average monthly bill of $128.82, per EIA Form 861-M data. That rate is 0.2¢ above the North Dakota average of 14.12¢/kWh; the U.S. average is 18.34¢/kWh.
Rate trend vs the North Dakota average
View this chart as a table (last 12 months)
| Month | Rate (¢/kWh) | Avg bill ($/mo) | Avg usage (kWh/mo) |
|---|---|---|---|
| July 2025 | 13.72 | 142.79 | 1041 |
| August 2025 | 13.61 | 133.85 | 984 |
| September 2025 | 14.00 | 117.23 | 837 |
| October 2025 | 13.78 | 110.10 | 799 |
| November 2025 | 12.88 | 124.03 | 963 |
| December 2025 | 11.66 | 166.75 | 1430 |
| January 2026 | 11.51 | 167.65 | 1457 |
| February 2026 | 12.28 | 138.88 | 1131 |
| March 2026 | 12.34 | 138.27 | 1120 |
| April 2026 | 13.29 | 121.70 | 916 |
| May 2026 | 14.39 | 125.63 | 873 |
| June 2026 | 14.27 | 128.82 | 903 |
Cass County Elec Coop Inc vs North Dakota vs the U.S.
| Cass County Elec Coop Inc | North Dakota | U.S. average | |
|---|---|---|---|
| Rate (June 2026) | 14.27¢/kWh | 14.12¢/kWh | 18.34¢/kWh |
| Average monthly bill | $128.82 | $113.65 | $170.65 |
| Average monthly usage | 903 kWh | 805 kWh | 930 kWh |
| Rate change, 1 year | +0.1% | +3.0% | +5.0% |
Estimate a bill at Cass County Elec Coop Inc rates
Worked example: 1,000 kWh at Cass County Elec Coop Inc's average effective rate of 14.27¢/kWh is about $142.70. The utility's actual average usage is 903 kWh/month, which produces the $128.82 average bill. This is an all-in average (energy, delivery, fixed charges, riders); your tariff's marginal price will differ.
See the full North Dakota rate trend, look up another utility by ZIP code, or read why electric bills are rising.
Source: EIA Form 861-M (monthly utility-level sales to ultimate customers, residential), published with roughly a two-month lag. Rate = revenue ÷ sales; bill = revenue ÷ customers. Months failing basic sanity screens are excluded. See methodology.