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Concord's municipally owned utility means lower rates, local control — and a different solar equation. Here's everything you need to know about solar for CMLP customers in 2026.
$0.18/kWh
CMLP Rate
12 kW
Avg System
15-17 yrs
Payback
$60-65K
25-Yr Savings
Federal Solar Tax Credit (25D) expired Dec 31, 2025. Homeowners purchasing solar in 2026 receive $0 federal tax credit. All numbers on this page reflect zero ITC.
The Concord Municipal Light Plant (CMLP) is one of roughly 40 municipal light plants in Massachusetts. Unlike investor-owned utilities (Eversource, National Grid, Unitil), CMLP is owned by the Town of Concord and governed by an elected Board of Commissioners.
Bottom line: CMLP's low rates are great for your monthly bill — but they make solar pencil out differently than for your neighbors in Lincoln, Acton, or Carlisle who pay Eversource rates. Solar still saves money over 25 years, but the payback period is longer and state incentives are limited.
How Concord's municipal utility stacks up against the investor-owned utilities your neighbors use.
| Feature | CMLP | Eversource | National Grid |
|---|---|---|---|
| Electric Rate | ~$0.18/kWh | ~$0.28/kWh | ~$0.32/kWh |
| SMART 3.0 Eligible | No | Yes | Yes |
| ConnectedSolutions | No | $275/kW | $225/kW |
| Net Metering | Board-set rate | State-regulated | State-regulated |
| Solar Payback | 15-17 yrs | 7-9 yrs | 6-8 yrs |
| Governance | Local elected board | DPU-regulated | DPU-regulated |
Rates as of early 2026. Eversource/NGrid rates include supply + delivery. CMLP rate is all-in bundled. Payback assumes cash purchase, no ITC, 12 kW system.
Without the federal ITC or SMART incentives, the math is straightforward — but solar still delivers strong long-term value.
$37,800 - $42,000
12 kW system at $3.15-$3.50/W. No federal ITC to offset the cost.
~$2,500-$2,700
Based on ~14,000 kWh production, $0.18/kWh CMLP rate, and net metering credits.
15-17 years
Longer than Eversource customers (7-9 yrs) due to CMLP's lower rates and no SMART.
$60,000-$65,000
Even with longer payback, 25-year panel warranties mean significant net savings.
25+ years
Lock in today's energy cost. Even 2-3% annual increases compound significantly over 25 years.
+$15,000-$25,000
Studies show solar adds 3-4% to home value. Especially impactful in Concord's $800K+ market.
MA State Tax Credit
$1,000
One-time state income tax credit
Sales Tax Exemption
6.25% saved
Solar equipment exempt from sales tax
Property Tax Exempt
20 years
No property tax increase from solar
Concord is one of America's most historically significant towns — home to the Old North Bridge, Walden Pond, and literary landmarks. Several areas are designated Local Historic Districts with design oversight.
Concord Center
Main Street, Monument Square area
Battle Road / Meriam's Corner
Lexington Road corridor
Hubbardville
Hubbard Street area
Barrett Farm
Barrett's Mill Road area
Panel visibility from public way
Rear-facing or non-visible installations preferred
Panel color and frame
All-black panels often required for aesthetic consistency
Mounting hardware
Flush-mount preferred; conduit routing reviewed
Ground-mount placement
Outside the historic viewshed — often approved more easily
Not in a Historic District?
Most of Concord is not in a Local Historic District. If your property is outside these designated areas, you only need a standard building permit — no Historic Districts Commission review required. Check with Concord's Planning Division if unsure.
Many Concord homes sit on 1-3+ acre lots — making ground-mount systems a popular and practical choice, especially for properties in historic districts or with shaded roofs.
Ground-mount systems can face true south at the ideal tilt angle (30-35°), maximizing production regardless of roof direction.
Avoid drilling into your roof. Important for older Concord homes with slate, cedar shake, or other specialty roofing.
Ground-mount in a rear yard, behind the house, avoids the visibility from public way requirement that triggers design review.
Ground-level access means easier cleaning, snow removal, and panel inspection. No ladders or safety equipment required.
Better airflow beneath panels reduces heat buildup. Ground-mount systems can produce 5-10% more than comparable roof arrays.
Concord requires setbacks from property lines. Typical: 15-25 ft front, 10-15 ft side/rear. Confirm with Concord Zoning.
Cost note: Ground-mount systems typically cost $0.15-$0.30/W more than rooftop due to the racking and foundation work. For a 12 kW system, expect roughly $1,800-$3,600 additional cost — often worth it for the higher production and easier maintenance.
The process differs slightly from going solar with Eversource or National Grid. Here's the CMLP-specific roadmap.
Call Concord Municipal Light Plant at (978) 318-3100 or visit their office at 1175 Elm Street. Ask for the current net metering tariff and any interconnection requirements.
Obtain at least 3 quotes from solar installers experienced with municipal light plants. Confirm each installer has completed CMLP interconnections before.
If your property is in a Concord Historic District, apply to the Historic Districts Commission before signing a contract. Allow 4-8 weeks for review.
Your installer files for a building permit with the Concord Building Department. For ground-mount systems, confirm zoning setback compliance.
Installation takes 1-3 days for rooftop, 3-5 days for ground-mount. The Concord Building Inspector and CMLP each perform inspections.
CMLP installs a bi-directional meter and approves Permission to Operate (PTO). This can take 2-6 weeks after inspection.
MLP installer tip: Not all solar installers are familiar with municipal light plant interconnection. Ask specifically: "How many CMLP (or other MLP) installations have you completed?" Installers experienced with MLPs know the process moves faster and avoids costly missteps.
With the 25D ITC at $0 and no SMART incentive, CMLP customers need to evaluate financing carefully. Here are the main options for 2026.
Lowest total cost and fastest payback. No interest expense. Best option if you have the capital.
$0 down with monthly payments. At current rates (6-8% APR), monthly loan payments may exceed monthly solar savings for the first several years.
Leases and PPAs: Not Recommended for CMLP
Solar leases and PPAs are typically priced assuming the third-party owner claims the commercial ITC. With CMLP's already-low $0.18/kWh rate, the PPA rate may not provide meaningful savings. Cash or loan is almost always the better path for CMLP customers.
Common questions from Concord homeowners about going solar with CMLP.
Explore more Massachusetts solar guides and tools.
Detailed cost breakdown for solar in Concord, MA.
Read guideLearn why MLP customers are excluded and who qualifies.
Read guideBattery demand-response payments (Eversource/NGrid only).
Read guideHow investor-owned utility rates compare for solar.
Read guide2026 rate trajectory and what it means for solar payback.
Read guideCompare financing options for Massachusetts solar.
Read guideGet a personalized estimate based on your Concord property, CMLP rate, and roof or lot. Our tool accounts for MLP-specific economics — no inflated ITC assumptions.
Get Your Solar EstimateFree, no-obligation estimate. Takes 2 minutes.