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We use your location to provide localized solar offers and incentives.
We serve MA, NH, CT, RI, ME, VT, NJ, PA, and TX
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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteEnter your vehicle, driving habits, and state. Get a precise solar sizing estimate, your recommended charging strategy, and annual fuel savings — in under 60 seconds.
A typical EV driving 12,000 miles/year uses 3,500–5,400 kWh annually depending on vehicle efficiency. In New England (4.0–4.2 peak sun hours), this requires 3–5 kW of dedicated solar capacity — roughly 8–13 panels. In Texas (5.5 peak sun hours), the same EV load needs only 2.5–4 kW. Use the calculator below to get the exact figure for your vehicle, state, and current electricity bill.
Efficiency: 2.8 mi/kWh — Tesla Model Y, VW ID.4, Ford Mustang Mach-E
4.2 peak sun hours/day
Three inputs. Real math. No fluff.
Your vehicle type determines efficiency (mi/kWh). Annual miles × efficiency = annual kWh demand your charger must supply.
State peak sun hours × system size × 0.80 derate factor = annual production. We solve for the kW needed to match your EV demand.
Current utility rate × EV kWh avoided = annual electricity savings. Compare against gas at $3.75/gal, 25 MPG to show total fuel savings.
Utility rates, local programs, and install costs differ significantly by state. Pick yours for state-specific analysis.
NuWatt engineers use your actual driving data to size a solar array that fully covers your EV charging. Free, no obligation.
It depends on your vehicle and how many miles you drive. A typical sedan (Tesla Model 3, Hyundai Ioniq 6) driving 12,000 miles/year uses about 3,750 kWh annually. In Massachusetts at 4.2 peak sun hours/day, that requires roughly 3.1 kW of additional solar — about 8 panels. Use the calculator above to get a precise figure for your vehicle and state.
In states with high electricity rates — like Massachusetts ($0.28/kWh) and Connecticut ($0.29/kWh) — the math is compelling. Every kWh your solar system produces instead of buying from the grid saves you more. The fuel savings vs. gasoline ($0.15/mile) vs. grid electricity ($0.08–0.12/mile at typical EV efficiency) make the combined investment one of the fastest-payback clean energy projects available.
Solar-only charging means your existing system produces enough excess to cover your EV — you charge during the day while panels are producing. Hybrid means you use solar when available and off-peak grid electricity overnight. Grid charging relies entirely on utility power, ideally on a Time-of-Use plan with overnight discounts. The calculator determines your best strategy based on your current system size and driving needs.
A typical EV adds 300–500 kWh per month to your home electricity consumption. At Massachusetts rates ($0.28/kWh), that is $84–$140/month. At Texas rates ($0.13/kWh), it is $39–$65/month. A properly sized solar addition can eliminate this entirely. The calculator shows you the exact bill impact for your state and driving habits.
State programs remain active across NuWatt territory: Massachusetts SMART 3.0 pays per kWh generated for 10 years; Connecticut has the Energize CT Smart-E Loan program; New Jersey offers TRECs (Transition Renewable Energy Certificates); and Texas homeowners benefit from deregulated REP choice with solar buyback rates. NuWatt advisors identify every applicable incentive for your specific state and utility.