Solar for your:
What Would You Save
Switching to a Mini-Split?
See how cold-climate heat pumps compare to your current heating costs — right here in Western Massachusetts.
Your Home
Do You Have Solar?
Great news — your solar helps pay to heat your home.
A typical NES installation produces 10,500 kWh/year. After covering your home's average
daily needs (~8,000 kWh/year), approximately 2,500 kWh of surplus solar
offsets your mini-split electricity at zero additional cost.
Heated Square Footage
1,500 sq ft
Current Heating Fuel
Heating Oil Price / gallon
$
Electricity Rate
Eversource Rate Class
R1HP is Eversource's Residential Heat Pump rate.
It's available to any home with a qualifying heat pump device. In winter (Nov–Apr),
the delivery rate drops dramatically — making electric heat far cheaper than standard service.
If you have a mini-split and aren't on R1HP yet, call Eversource at 877-659-6326 to switch.
It's free and takes one phone call.
Electricity Rate / kWh
$
Standard residential rate.
Typical range: $0.24–$0.28/kWh.
Typical range: $0.24–$0.28/kWh.
Your Current Cost
Heating Oil
$0
per year
—
Mini-Split Cost
Cold-Climate Heat Pump
$0
per year
— kWh · COP 2.8
Mini-Split + Solar
Solar Offsets the Difference
$0
per year
— kWh from grid
Your solar saves an additional $0/year on top of the
mini-split savings — that's $0 over 10 years
just from using surplus solar to heat your home instead of burning fuel.
MassSave rebates up to $8,500 available.
The federal Residential Clean Energy Credit covers 30% of installation costs.
These incentives can dramatically shorten your payback period.
How we calculate this:
Western Massachusetts averages roughly 6,400 heating degree days per year. We estimate your home
needs approximately 45,000 BTU of delivered heat per square foot annually. Current system efficiency
is assumed at 85%. The mini-split uses a conservative seasonal COP of 2.8 — modern Mitsubishi
cold-climate units often perform better. The R1HP rate ($0.22/kWh) reflects Eversource's
Residential Heat Pump winter delivery schedule; the standard R1 rate ($0.25/kWh) reflects typical
all-in residential pricing. When solar is factored in, we assume a typical NES installation produces
10,500 kWh/year with ~8,000 kWh used for household base load, leaving 2,500 kWh of surplus
available for heating. Actual results vary by insulation, thermostat habits, and fuel price swings.
Ready to find out exactly what a mini-split system would cost for your home?
Northeast Solar Design Associates • Mitsubishi Diamond Installer • MassSave Partner
Franklin, Hampshire, Hampden & Berkshire Counties • 413-247-6045
