Electric Tankless Water Heater in Cambridge — $1,769/yr to Run (26.9¢/kWh)

Understanding Electric Tankless Water Heater Energy Costs in Cambridge, MA

Cambridge is a mid-sized Massachusetts city where residential electricity rates from Eversource Energy are shaped by regional energy supply and local demand patterns. Running a high-draw appliance like the Electric Tankless Water Heater (18,000W) at Cambridge's rate of 26.9¢/kWh costs approximately $1,769 per year — $915 more than the national average of $854.

Electricity in Cambridge is significantly more expensive than the national average — 107% higher. For a Electric Tankless Water Heater used 1 hours per day, this rate premium adds up to $915 in extra annual costs. Energy-efficient models and usage habits have an outsized impact in high-rate markets like this.

Cambridge has a high cost of living (index: 127), which means electricity is just one of many above-average expenses. Reducing appliance energy costs — even by small amounts — contributes to meaningful household savings in this market. Upgrading to an ENERGY STAR Electric Tankless Water Heater can cut energy use by up to 24%, saving approximately $425 per year at Cambridge rates.

Cambridge's moderate climate (avg 49.8°F) helps keep seasonal energy cost swings manageable for most appliances. A Electric Tankless Water Heater produces approximately 2.1 tons of CO2 annually at typical usage. Cambridge residents can reduce this footprint by choosing an ENERGY STAR certified unit, optimizing usage patterns, or investing in solar — see our solar savings calculator for Cambridge.