Massachusetts electricity prices - 30.49¢/kWh (July 2026)
Residential price, average bill, and the data-center story
- Residential electricity in Massachusetts costs 30.49¢/kWh as of - +1.4% year over year, per U.S. Energy Information Administration data.
- The average Massachusetts home used 738 kWh that month and paid an average bill of $224.86 (−6.4% vs a year earlier).
- Massachusetts has the 4th-highest residential electricity price of the 50 states and DC - 67% above the U.S. average of 18.31¢/kWh.
Price by sector
| Sector | ¢/kWh (July 2026) | 1-yr change |
|---|---|---|
| Residential | 30.49¢ | +1.4% |
| Commercial | 24.41¢ | +4.9% |
| Industrial | 20.25¢ | +1.6% |
Water
Electricity delivered in Massachusetts carries 3.33 liters of water per kilowatt-hour consumed at the power plants supplying it (0.63 L/kWh excluding hydropower reservoir evaporation), against a national average of 4.28. That is below the national figure, and it is a property of the grid here rather than of any one building: a data center drawing 100 GWh a year in Massachusetts accounts for about 88 million gallons of power-plant water before it cools anything. All states ranked →
A data center's water use is roughly twelve times larger once the water evaporated at its power plants is counted. The Colorado River arithmetic → · how the water numbers work →
All states ranked → · Download Massachusetts data (CSV) · Glossary