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RMLD delivers some of the lowest electricity rates in Massachusetts at ~$0.15/kWh. That is great for your wallet — but it changes the solar math significantly. Here is an honest, numbers-first guide for Reading, North Reading, Wilmington, and Lynnfield Center homeowners.
Federal Solar Tax Credit (25D) expired December 31, 2025. There is no federal residential ITC in 2026. All cost and payback figures on this page reflect $0 federal credit. The MA $1,000 state credit and tax exemptions still apply.
RMLD serves approximately 30,000 customers across four communities north of Boston. If your electric bill says "Reading Municipal Light Department," this guide is for you.
~26,000
RMLD headquarters on Ash Street
~16,000
Suburban rooftops with great south exposure
~23,000
Largest service area by geography
~3,500 (partial)
Only the Center district — rest is National Grid
Lynnfield note: Only Lynnfield Center is served by RMLD. The rest of Lynnfield is National Grid territory. If you see "National Grid" on your bill, see our MA Solar Cost Guide instead — your payback will be much shorter.
RMLD customers enjoy real advantages — but those same advantages make the solar payback period significantly longer than for IOU customers.
How the solar economics stack up across Massachusetts utilities for an average 11 kW residential system in 2026.
| Metric | RMLD | Eversource | National Grid |
|---|---|---|---|
| Residential Rate (¢/kWh) | ~15.0 | ~28.4 | ~32.0 |
| SMART 3.0 Eligible | No | Yes | Yes |
| ConnectedSolutions (Battery DR) | No | $275/kW | $225/kW |
| Net Metering (1:1) | Varies — check RMLD policy | Yes (up to caps) | Yes (up to caps) |
| Solar Payback (No ITC) | 17-20 years | 10-13 years | 9-12 years |
| 25-Year Savings | $50-55K | $80-100K | $90-115K |
| MA $1,000 State Credit | Yes | Yes | Yes |
| Sales & Property Tax Exempt | Yes | Yes | Yes |
Based on 11 kW system, 2026 pricing, no federal ITC. Payback assumes 3% annual rate escalation. SMART and ConnectedSolutions are IOU-only programs.
We believe in giving you real numbers, not inflated projections. Here is what an average RMLD solar installation actually looks like in 2026 — no federal tax credit, no SMART payments.
11 kW system, suburban roof, south-facing
We are being straight with you
A 17-20 year payback is real. An Eversource customer with the same system pays back in 10-13 years. RMLD's low rate is genuinely a great deal — it just means solar's financial return takes longer. If your primary motivation is short-term ROI, solar may not be your best investment right now. If you are thinking long-term, keep reading.
A longer payback does not mean solar is a bad decision. Here are five legitimate reasons RMLD customers go solar in 2026.
RMLD rates will not stay at $0.15 forever. Even a 3% annual increase pushes your rate to $0.31/kWh by 2046. Solar locks in your cost at $0/kWh for 25+ years.
An 11 kW system offsets ~9 tons of CO2 per year — equivalent to taking 2 cars off the road. If climate action matters to you, the math goes beyond dollars.
Studies show solar adds 3-4% to home value. On a $600,000 Reading home, that is $18,000-$24,000 — recoverable even if you sell before payback.
Pair solar with a battery for outage protection. Even without ConnectedSolutions revenue, a battery provides peace of mind during nor'easters and grid events.
If you drive an EV or plan to, solar-powered home charging at $0/kWh vs $0.15/kWh saves $600-800/year and dramatically improves total payback math.
If you plan to stay in your home 15+ years, you will comfortably pass the break-even point and enjoy 5-10 years of pure profit from your system.
The process is similar to any MA solar installation, with a few RMLD-specific steps.
Call (781) 944-1340 or visit rmld.com to understand their current net metering policy, interconnection requirements, and any capacity limits. This is the most important step — do not sign a contract until you know RMLD's terms.
Get at least 3 quotes from installers experienced with municipal light plants. Not all installers are familiar with MLP interconnection — ask specifically about their RMLD experience.
Given the longer payback, seriously compare a cash purchase against a lease or PPA. A $0-down lease may save you money from day one without tying up $33,000+ in capital.
Your installer handles engineering design and pulls building permits from your town (Reading, North Reading, Wilmington, or Lynnfield). Typical timeline: 4-8 weeks.
Installation takes 1-3 days. After installation, your town inspector and RMLD must both approve the system before it is energized.
RMLD installs a bi-directional meter and grants permission to operate (PTO). This may take 2-4 weeks after inspection. Once approved, your system is live.
With no 25D credit, how you pay for solar matters more than ever. For RMLD customers especially, leases and PPAs deserve a hard look.
Maximum long-term savings
Best for: Homeowners with capital who plan to stay 15+ years and want maximum total savings.
Own with $0 down
Caution: At $0.15/kWh, loan payments often exceed electricity savings. Run the numbers carefully before committing.
Save from day one
Best for: RMLD customers who want to go solar without $33K+ upfront and do not want to wait 17+ years for ROI.
Honest answers to the most common RMLD solar questions.
It depends on your priorities. The honest math shows a 17-20 year payback period — significantly longer than the 9-13 years Eversource or National Grid customers see. However, solar still generates $50,000-55,000 in 25-year savings, protects against future rate increases, eliminates your carbon footprint, and adds 3-4% to your home value. If you plan to stay in your home long-term, it can still make financial sense.
SMART 3.0 and ConnectedSolutions are programs run by investor-owned utilities (IOUs) like Eversource and National Grid, regulated by the MA DPU. Municipal light plants like RMLD are independently governed and set their own policies. This means RMLD customers miss out on roughly $0.03/kWh in SMART incentives and $225-275/kW in battery demand response payments.
RMLD has its own interconnection and net metering policies that differ from the statewide rules. You should contact RMLD directly at (781) 944-1340 or visit rmld.com to confirm current credit rates and any capacity caps before signing a solar contract.
No. The residential solar Investment Tax Credit (Section 25D) expired on December 31, 2025 under the OBBBA. There is no federal tax credit available for homeowner-owned solar in 2026. However, third-party ownership models (leases/PPAs) may still benefit from the commercial ITC (Section 48), which can translate to lower monthly payments for you.
RMLD customers can claim the MA state income tax credit of $1,000, a state sales tax exemption on solar equipment, and a local property tax exemption (your home value increases but your property taxes do not). These are state-level benefits that apply regardless of your utility.
For RMLD customers, a lease or PPA is worth serious consideration. With no federal ITC and a $0.15/kWh rate, a cash purchase ties up $33,000+ for 17-20 years before breaking even. A $0 down lease or PPA lets you save from day one — typically 10-15% off your current rate — with no upfront investment. The trade-off is lower total savings over 25 years.
No utility rate is guaranteed. RMLD's rates have historically been stable but have risen over time. Even a 3% annual increase would push RMLD's rate to ~$0.21/kWh by 2036 and ~$0.31/kWh by 2046. Solar production locks in today's cost of electricity for 25+ years, providing a hedge against any future rate increases.
The installation itself takes 1-3 days. However, the total timeline from contract to power-on is typically 8-16 weeks. This includes engineering design, local building permits (Reading, North Reading, Wilmington, or Lynnfield), RMLD interconnection approval, installation, inspection, and meter configuration. RMLD's interconnection process may differ from IOU procedures, so ask your installer about their experience with RMLD specifically.
Compare your options and dig deeper into MA solar programs.
Statewide cost data, installer pricing, and what to expect.
How the ITC expiry changes the math for all MA homeowners.
Detailed financing comparison with real numbers.
See how IOU rates compare to RMLD for solar ROI.
Learn about the IOU incentive RMLD customers cannot access.
An alternative path if rooftop solar does not pencil out.
We will give you honest numbers based on your actual roof, your actual usage, and RMLD's actual rate — no inflated projections.
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