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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 QuoteMassachusetts has the highest electricity rates in the NuWatt footprint — $0.33/kWh with Eversource. That means solar panels add more value here than almost anywhere else in the country. SMART 3.0 tariff income, ConnectedSolutions revenue, and a 20-year property tax exemption make your solar home a compelling purchase.
Solar panels add approximately 4.1% ($23,780) to Massachusetts home values. Your SMART 3.0 tariff, ConnectedSolutions contract, and net metering enrollment all transfer to the buyer. Massachusetts provides a 20-year property tax exemption (MGL Ch 59 §5), so you captured value appreciation without higher annual taxes. At $0.33/kWh — the highest rate in our service area — buyers calculate larger savings than any other state, driving a stronger premium.
Massachusetts has the most compelling combination of high electricity rates, strong incentive programs, and protective solar policies in the NuWatt service area. Every factor works in favor of the seller.
Electricity rates directly determine how much a buyer saves with solar. A buyer in Massachusetts paying $0.33/kWh (Eversource) gets roughly 2.75x more dollar value per kWh from the same solar system compared to a buyer in a state paying $0.12/kWh. This is why the home value premium in Massachusetts is among the highest in the country — buyers are making a straightforward financial calculation, and the math is overwhelmingly positive here.
Your SMART 3.0 enrollment is one of the most valuable assets transferring with your home. The buyer inherits your locked-in compensation rate, which may be higher than current enrollment tiers.
Contact your SMART-qualified installer or the DOER SMART Program administrator to begin the transfer process.
The new homeowner submits a SMART 3.0 transfer application to the program administrator with proof of property ownership.
The buyer assumes the existing SMART tariff agreement at your current rate tier — they inherit your locked-in compensation rate.
The utility (Eversource, National Grid, or Unitil) updates the interconnection agreement to the new account holder.
The transfer typically completes within 30-60 days. No gap in SMART payments during the transition if handled proactively.
Start the SMART transfer early. Do not wait until closing week. The transfer process takes 30-60 days, and the buyer will want confirmation that the SMART income will continue before finalizing the purchase. Include SMART documentation in your listing materials.
Massachusetts General Laws Chapter 59, Section 5 exempts solar energy systems from property tax assessment for 20 years from installation. The remaining exemption period transfers to the buyer.
Buyer selling point: When marketing your home, calculate and present the remaining years of property tax exemption. A system installed in 2022 still has 16 years of exemption remaining in 2026 — that's 16 years of free home value appreciation for the buyer with zero additional property tax burden.
Massachusetts has more transferable solar programs than any other state in our service area. Here is what transfers and what requires action.
| Program | Transfers? | Action Required | Notes |
|---|---|---|---|
| SMART 3.0 Tariff | Yes | Contact DOER program administrator; buyer submits transfer application | Buyer inherits your locked-in compensation rate — a significant selling point |
| Mass Save Standing | Yes | Document rebates received; account transfers with property address | No action needed — rebate history tied to address, not owner |
| ConnectedSolutions | Yes | Contact your utility (Eversource, National Grid, or Unitil) | Battery dispatch contract transfers to new owner; annual incentive payments continue |
| Net Metering Credits | Yes | New owner opens utility account; net metering enrollment transfers with address | Interconnection agreement stays with property, not departing customer |
| Solar Loan (if applicable) | Payoff | Pay off at closing or negotiate buyer assumption with lender | Most solar loans require payoff at sale — factor into closing costs |
| Lease/PPA (Sunrun, Tesla, SunPower) | Yes | Buyer must pass credit check and assume remaining lease/PPA term | Transfer process takes 2-4 weeks; some companies charge a transfer fee |
Mass Save rebate history is tied to the property address, not the homeowner. The new owner automatically inherits your Mass Save program standing when they establish their utility account. No transfer paperwork is required.
Home Energy Assessment: Document your Mass Save assessment results to show the buyer the home's energy efficiency improvements.
Heat Pump Rebates: If you received Mass Save heat pump rebates, document the equipment installed — the buyer benefits from the efficiency.
If your home has a battery enrolled in ConnectedSolutions, the dispatch contract transfers to the new homeowner. Contact your utility (Eversource, National Grid, or Unitil) to initiate the transfer. This is a powerful selling point — the buyer inherits recurring annual revenue from their battery.
ConnectedSolutions pays approximately $225-$275 per kWh of battery capacity per year. A typical 13.5 kWh Tesla Powerwall earns $3,000-$3,700 annually. Over 10 years, that's $30,000-$37,000 in dispatch payments alone — on top of backup power protection and electricity bill savings. Present this number to potential buyers.
Massachusetts General Laws Chapter 187, Section 1A provides solar access protection. HOAs, neighbors, and future development cannot unreasonably shade an existing solar installation. This protection transfers with the property, giving buyers confidence that their solar production will not be compromised after purchase.
Include this in your listing: "Solar system protected by Massachusetts solar access law (MGL Ch 187 §1A) — production guaranteed against future shading by neighboring construction or landscaping."
Sunrun, Tesla Energy, and SunPower leases are common in Massachusetts. Owned solar consistently outperforms leased solar in resale value.
| Category | Owned Solar | Leased / PPA |
|---|---|---|
| Home value impact | Full 4.1% premium — owned system is a home asset on your balance sheet | Reduced or zero premium — buyer must assume lease obligation |
| Sale process | Clean transfer — system conveys with property like any fixture | Lease company involvement — buyer credit check, 2-4 week transfer, possible buyout ($5K-$20K) |
| SMART 3.0 income | Full SMART tariff income transfers to buyer — locked-in rate | SMART income goes to lease company, not homeowner |
| Buyer appeal | High — buyers want lower bills with no strings attached | Lower — many buyers are wary of inherited payment obligations |
| Property tax | No increase for 20 years — MGL Ch 59 §5 exemption | No increase (lease company owns the panels) |
| ConnectedSolutions revenue | Battery dispatch payments transfer to buyer | Battery dispatch payments may go to lease company |
Start the lease transfer process as soon as you decide to sell. Contact your lease provider (Sunrun: 855-478-6786, Tesla Energy: tesla.com/support, SunPower: 800-786-7693) to get transfer requirements and timelines. If your buyer cannot or will not assume the lease, you may need to buy it out — typical buyout costs range from $5,000 to $20,000+ depending on remaining term and system size.
Regardless of your utility — Eversource, National Grid, or Unitil — the solar interconnection agreement is tied to the property address, not to you as the account holder. The new owner opens a new utility account and inherits the existing interconnection and net metering arrangement automatically.
Most buyers do not understand solar value unless you document it clearly. These steps maximize your sale price and reduce time on market.
Pull 12 months of Enphase or SolarEdge production reports showing actual kWh generated
Gather utility bills showing near-zero or credit-balance months
Document SMART 3.0 tariff enrollment: rate tier, remaining term, annual income
Compile ConnectedSolutions battery dispatch history and incentive payments received
List equipment specs: panel brand/wattage, inverter model, battery capacity
Document remaining warranties: panels (25yr), inverter (12-25yr), workmanship
Get a professional appraisal using the PV Value tool (income approach)
Confirm the 20-year property tax exemption period and remaining years
Note system installation date, total lifetime production (kWh), and system size (kW)
Prepare Mass Save energy assessment documentation if available
The appraisal method matters enormously. Insist that your appraiser uses the income approach and the PV Value tool — not the cost approach, which typically undervalues solar systems.
Calculates the present value of future electricity savings plus SMART 3.0 tariff income plus ConnectedSolutions revenue. Uses local rates ($0.33/kWh) and remaining system life. Most accurate for MA solar.
Uses depreciated replacement cost. Significantly undervalues MA solar because it ignores the high electricity rate savings and SMART tariff income.
Compares to nearby solar home sales. Limited data in some MA markets, but improving as solar penetration grows (MA has the 6th highest solar adoption rate nationally).
The PV Value tool is endorsed by Fannie Mae and Freddie Mac for solar appraisals. It factors in local utility rates, system production data, remaining warranty life, and SMART 3.0 income to produce a defensible valuation. Request that your appraiser use PV Value — many MA appraisers are already trained on it.
At $0.33/kWh, MA solar savings translate into significant additional mortgage capacity for your buyers.
Monthly solar savings (at $0.33/kWh):
~$250-$400/month
Additional mortgage principal supportable:
$50,000-$80,000+
Approximate: $300/month savings / 0.006 (6% APR 30yr factor) = $50,000 additional principal. Plus SMART 3.0 income and ConnectedSolutions revenue further strengthen the buyer's position.
FHA and VA loans have specific solar addendum requirements. Conventional loans under Fannie Mae and Freddie Mac guidelines allow appraisers to credit solar savings. Work with a lender experienced in solar home transactions — they are increasingly common in Massachusetts.
NuWatt Energy helps Massachusetts homeowners go solar with full-service installation, SMART 3.0 enrollment, ConnectedSolutions setup, and Mass Save rebate coordination.