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Your complete resource hub for solar, heat pumps, and energy savings in Massachusetts. Every guide updated for 2026 — including the end of federal tax credits, new Mass Save rebate tiers, and the R-410A refrigerant ban.
2026 Update: The federal 25D solar tax credit and 25C heat pump tax credit expired December 31, 2025. Massachusetts state incentives (Mass Save, SMART, net metering) remain the primary savings drivers.
Everything Massachusetts homeowners need to know about heat pumps in 2026 — rebates, costs, performance, and how to choose the right system and installer.
Complete 2026 rebate tiers: whole-home $2,650/ton, partial $1,125/ton, basic $250/ton. Plus 0% HEAT Loan financing.
Read guideTotal cost breakdown by system type — ductless, ducted, hybrid. Net cost after rebates and 0% HEAT Loan options.
Read guidePerformance data at -13°F. Mitsubishi, Fujitsu, LG, Daikin, Carrier, Bosch model comparison.
Read guideInteractive calculator: enter your oil usage, see your heat pump savings. Conversion process walkthrough.
Read guideHonest gas-to-heat-pump analysis with hybrid/dual-fuel options. When a heat pump is NOT worth it.
Read guide10-point checklist, red flags to watch for, and questions to ask before signing.
Read guideEversource vs National Grid heat pump rates. Save $70–$141/month Nov–Apr. How to enroll.
Read guideR-410A banned from Mass Save. What the new refrigerants mean for your installation.
Read guideSave ~$2,000/year switching from propane ($3.65/gal) to a heat pump. Plus eliminate tank rental and delivery fees.
Read guideMass Save rebates + $0.18/kWh HP electric rate + ConnectedSolutions $275/kW. Complete Eversource guide.
Read guideMass Save rebates + $0.19/kWh HP rate + ConnectedSolutions $225/kW for Worcester, Brockton, New Bedford areas.
Read guideStack Mass Save income-eligible rebates ($8,500) + 0% HEAT Loan for a free or near-free heat pump. Income thresholds and how to apply.
Read guideEliminate both your electric AND heating bills. $5,000–$6,000/yr savings. Stack every MA incentive.
Read guideBoston-specific analysis with Eversource gas vs electric rates. When conversion makes sense (and when it doesn't).
Read guideMassachusetts solar guides for 2026 — costs, SMART program details, utility comparisons, and everything you need for a smart solar investment without the federal tax credit.
Every incentive in one place: SMART 3.0, net metering, ConnectedSolutions, tax exemptions. Interactive stacking calculator.
Read guideEverything about solar in Massachusetts: costs, incentives, payback, and financing in the post-ITC era.
Read guideSMART 3.0 flat rates ($0.03/kWh residential), adders, enrollment, and 20-year payment projections.
Read guideBattery (+$0.04), canopy (+$0.08), community solar (+$0.07), low-income (+$0.05). Stack for $0.22+/kWh.
Read guideNeighborhood-by-neighborhood pricing. $3.16/W average, 7.6-year payback, $154K in 25-year savings.
Read guideHead-to-head comparison for solar: rates, net metering, SMART incentives, ConnectedSolutions.
Read guideR-4 TOU arbitrage ($0.1051/kWh spread) + ConnectedSolutions ($225/kW) + SMART 3.0 battery adder.
Read guideDo you need one? Cost: $1,800–$6,000+. Timeline: 2–4 weeks. SPAN smart panel alternative.
Read guide$3.00–$3.40/W average. 51 cities with exact pricing, payback periods, and utility territory details.
Read guideITC expired Dec 2025. Why MA solar still pays back in 7–9 years with SMART + net metering + tax exemptions.
Read guide1:1 retail credit, cap rules, virtual net metering, and how credits appear on your Eversource/NGrid bill.
Read guideSide-by-side comparison of financing options. 25-year NPV analysis for each path. Who wins (and when).
Read guideCurrent block, capacity remaining, rate schedules, and enrollment status across all three utility territories.
Read guideHow long it really takes: Eversource vs National Grid approval timelines, common delays, and how to avoid them.
Read guideSection 48 ITC (up to 70%), MACRS, SMART commercial rates. For businesses and nonprofits.
Read guideNo rooftop needed. Subscribe to a local solar farm and save 10–20% on your electric bill.
Read guideNo more ITC. Here's what solar ACTUALLY costs in 2026, who should buy, and who should wait.
Read guideHow tariffs affect panel pricing, which manufacturers are FEOC-compliant, and what it means for your quote.
Read guideTier 1 panel comparison: Silfab, REC, Hyundai, Q.CELL. Warranties, efficiency, and real pricing.
Read guide12 warning signs of a bad solar installer. Protect yourself from bait-and-switch pricing and fly-by-night companies.
Read guideNavigate Back Bay, Beacon Hill, and local historic district commissions. What's allowed and how to get approved.
Read guideHonest analysis: when solar makes sense in 2026, when it doesn't, and the math behind the decision.
Read guideThird-party ownership explained. How Section 48 ITC flows to you. Lease vs PPA vs loan comparison.
Read guideThe commercial ITC is still alive. How third-party ownership lets you access it through leases and PPAs.
Read guideSMART 3.0 low-income adder ($0.06/kWh), Mass Save income-eligible, and community solar discounts.
Read guideGateway City with lowest MA solar cost ($2.85-3.25/W) + 3.6x SMART rate for income-eligible residents.
Read guideGateway City with National Grid's highest rates ($0.32/kWh) + enhanced SMART. Bilingual support.
Read guideSMART 3.0 $0.06/kWh, ConnectedSolutions $275/kW, and Mass Save programs for Eversource income-eligible customers.
Read guideHighest MA rate ($0.32/kWh) = fastest payback. SMART 3.0 $0.06/kWh + ConnectedSolutions $225/kW for income-eligible.
Read guide$1,000 state income tax credit, 20-year property tax exemption, and 6.25% sales tax exemption explained.
Read guideInstalled capacity, growth trends, top installer market share, and utility territory breakdowns.
Read guideEnter your town or ZIP — see your utility, rate, SMART eligibility, and solar economics instantly.
Read guideMass Solar Loan ended in 2020. Current options: home equity, personal loans, and what rates to expect.
Read guideStorage, electric vehicle charging, and electrification bundles for Massachusetts homeowners.
Earn $225–$275/kW/year from your battery. Eversource vs National Grid programs, qualifying batteries, and enrollment.
Read guidePowerwall 3 pricing, ConnectedSolutions revenue, SMART battery adder, and total cost-of-ownership analysis.
Read guideTime-of-use rate arbitrage + ConnectedSolutions + SMART battery adder. Triple-stack your battery revenue.
Read guideSection 30C EV credit (expires June 2026), Level 2 charger options, and how solar offsets your driving costs.
Read guideInteractive tool: enter your bill, utility, and roof details. Get personalized savings and payback estimates.
Read guideDeep dives into specific Mass Save programs — financing, assessments, insulation, qualified products, and the honest truth about rebate timelines and complaints.
Income-tiered terms (3/5/7 years), qualifying improvements, how to apply, and HEAT Loan vs commercial loan comparison.
Read guideWhat they check, $235–$575 in free installs (LEDs, thermostats, weatherstripping), and what happens after.
Read guideAttic, wall, basement insulation at 75% off (or 100% income-eligible). Measures, costs, and whole-home bundle savings.
Read guideHonest guide to rebate timelines (4–6 months), common issues, the R-410A trap, and how to escalate.
Read guideR-410A removed from QPL. Brand directories for R-32 and R-454B refrigerants. How to check before you buy.
Read guide$750 rebate (or FREE income-eligible). 4 qualifying models compared, installation requirements, and savings vs tank.
Read guideTrack Massachusetts electricity rates, see which utilities are rising fastest, and discover how solar locks in your cost.
Eversource vs National Grid vs Unitil: rate history 2020–2026, ISO-NE drivers, seasonal spikes, and how solar locks in your cost.
View rate trendsLive rates for Eversource ($0.28/kWh), National Grid ($0.32/kWh), and Unitil ($0.28/kWh). Updated monthly.
View ratesHead-to-head: net metering, SMART, ConnectedSolutions, and which utility territory saves more with solar.
Compare utilitiesElectricity rates jumped 22–42% across 9 states. See the data and learn how to lock in your cost.
Read analysisMassachusetts has 40+ municipal light plants (MLPs) with their own solar rules. They're NOT eligible for SMART 3.0 or ConnectedSolutions — but many offer local net metering and rebates. These in-depth guides cover each utility's specific policies, rates, and solar economics.
$0.15/kWh avg • Net metering at retail
Full solar guide$0.18/kWh avg • $1,000 solar rebate
Full solar guide$0.20/kWh avg • $1.20/W local rebate
Full solar guide$0.18/kWh avg • Ground-mount friendly
Full solar guide$0.16/kWh avg • Green power program
Full solar guide$0.19/kWh avg • Battery storage valued
Full solar guide$0.16/kWh avg • Gateway city value
Full solar guide$0.16/kWh avg • Gas + electric MLP
Full solar guide$0.11/kWh avg • Hydro-powered rates
Full solar guide$0.14/kWh avg • Whip City Solar
Full solar guide$0.15/kWh avg • North Shore MLP
Full solar guide$0.17/kWh avg • Coastal considerations
Full solar guide$0.15/kWh avg • Triple-play MLP
Full solar guide$0.14/kWh avg • Historic harbor town
Full solar guideSolar economics vary by utility territory, permitting, and local incentives. Find your city for exact pricing, payback period, and utility-specific details.
Eversource • $3.10-$3.50/W
Eversource • $3.15-$3.50/W
National Grid • $2.90-$3.30/W
Eversource • $2.85-$3.25/W
Eversource • $3.10-$3.55/W
Eversource • $3.10-$3.45/W
Eversource • $3.15-$3.50/W
Eversource • $3.05-$3.40/W
Eversource • $3.10-$3.45/W
Eversource • $3.00-$3.35/W
Eversource • $3.15-$3.50/W
Eversource • $3.10-$3.45/W
WMLP (Muni) • $3.15-$3.50/W
Eversource • $3.10-$3.45/W
Eversource • $3.05-$3.40/W
Eversource • $3.05-$3.40/W
Eversource • $3.10-$3.45/W
Eversource • $3.05-$3.40/W
Eversource • $3.10-$3.45/W
Eversource • $3.05-$3.40/W
Belmont Light • $3.10-$3.45/W
CMLP (Muni) • $3.15-$3.50/W
Eversource • $3.15-$3.50/W
Eversource • $3.20-$3.55/W
Eversource • $3.25-$3.60/W
Eversource • $3.20-$3.55/W
HMLP (Muni) • $3.10-$3.45/W
BELD (Muni) • $3.00-$3.35/W
Eversource • $2.95-$3.30/W
Eversource • $3.05-$3.40/W
Eversource • $3.00-$3.35/W
Eversource • $3.05-$3.45/W
Eversource • $3.00-$3.40/W
National Grid • $3.05-$3.40/W
MMLP (Muni) • $3.10-$3.50/W
National Grid • $3.00-$3.40/W
National Grid • $3.00-$3.35/W
PMLP (Muni) • $2.95-$3.30/W
DEMEC (Muni) • $2.95-$3.30/W
National Grid • $3.05-$3.40/W
SELP (Muni) • $2.90-$3.25/W
Unitil • $2.85-$3.20/W
Unitil • $2.85-$3.20/W
Eversource • $2.95-$3.30/W
National Grid • $2.95-$3.30/W
National Grid • $2.90-$3.25/W
Eversource • $2.90-$3.25/W
Eversource • $2.90-$3.25/W
Eversource • $2.85-$3.20/W
Eversource • $2.85-$3.20/W
Eversource • $2.90-$3.25/W
RMLD (Muni) • $2.85-$3.20/W
How long does solar actually take in your town? We track permit approval times, interconnection timelines, fees, and historic district requirements for 53 Massachusetts towns — so you know what to expect before you sign a contract.
53
Towns Tracked
10 days
Avg Permit Time
20
Historic Districts
45
Online Permits
| Town | Permit | Total |
|---|---|---|
| GreenfieldEversource | 7d | 5-9 wks |
| SomervilleEversource | 8d | 6-10 wks |
| MedfordEversource | 8d | 5-10 wks |
| ArlingtonEversource | 8d | 5-10 wks |
| WatertownEversource | 8d | 5-10 wks |
| DedhamEversource | 8d | 5-10 wks |
| NatickEversource | 8d | 5-10 wks |
| MarlboroughEversource | 8d | 5-10 wks |
| MarshfieldEversource | 8d | 5-10 wks |
| GloucesterNational Grid | 8d | 5-10 wks |
| BeverlyNational Grid | 8d | 5-10 wks |
| LeominsterUnitil | 8d | 5-9 wks |
| FitchburgUnitil | 8d | 5-9 wks |
| NorthamptonEversource | 8d | 5-10 wks |
| AmherstEversource | 8d | 5-10 wks |
| PittsfieldEversource | 8d | 5-10 wks |
| BelmontBelmont Light | 8d | 4-9 wks |
| BraintreeBELD | 8d | 4-9 wks |
| PeabodyPMLP | 8d | 4-9 wks |
| DanversDanvers Electric | 8d | 4-9 wks |
| ShrewsburySELCO | 8d | 4-9 wks |
| ReadingRMLD | 8d | 4-9 wks |
| Ashford CrossingNational Grid | 9d | 5-10 wks |
| BrooklineEversource | 10d | 6-11 wks |
| NewtonEversource | 10d | 6-11 wks |
| QuincyEversource | 10d | 6-11 wks |
| WalthamEversource | 10d | 6-11 wks |
| MiltonEversource | 10d | 6-12 wks |
| LexingtonEversource | 10d | 6-12 wks |
| WinchesterEversource | 10d | 6-11 wks |
| NeedhamEversource | 10d | 6-11 wks |
| FraminghamEversource | 10d | 6-11 wks |
| PlymouthEversource | 10d | 6-12 wks |
| ScituateEversource | 10d | 6-12 wks |
| FalmouthEversource | 10d | 7-13 wks |
| SandwichEversource | 10d | 7-13 wks |
| SalemNational Grid | 10d | 6-11 wks |
| WorcesterNational Grid | 10d | 6-11 wks |
| SpringfieldEversource | 10d | 6-11 wks |
| LowellNational Grid | 10d | 6-11 wks |
| LawrenceNational Grid | 10d | 6-11 wks |
| New BedfordEversource | 10d | 6-11 wks |
| WellesleyWMLP | 10d | 5-10 wks |
| HinghamHMLP | 10d | 5-10 wks |
| CambridgeEversource | 12d | 7-12 wks |
| WestonEversource | 12d | 7-13 wks |
| DoverEversource | 12d | 7-13 wks |
| LincolnEversource | 12d | 7-13 wks |
| Cape CodEversource | 12d | 7-14 wks |
| NewburyportNational Grid | 12d | 6-12 wks |
| ConcordCMLP | 12d | 6-11 wks |
| MarbleheadMMLD | 12d | 6-12 wks |
| BostonEversource | 15d | 8-14 wks |
Data compiled from municipal building departments, installer field reports, and NuWatt project history. Last updated March 2026. Click any row for details.
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