Panel Permits: Arlington vs Somerville
How do panel permits rules compare between Arlington, MA and Somerville, MA?
Arlington and Somerville have similar restriction levels.
Arlington, MA
Middlesex County
Solar PV requires a building and electrical permit under 780 CMR and 527 CMR 12. The MA Solar Access Law, MGL c.40A s.3, protects installations from zoning bans.
View full Arlington rules →Somerville, MA
Middlesex County
Solar installations in Somerville need ISD building and electrical permits. Most rooftop systems qualify for expedited review and are allowed by right.
View full Somerville rules →Key Facts Comparison
| Fact | Arlington | Somerville |
|---|---|---|
| Building code | 780 CMR | - |
| Electrical code | 527 CMR 12 | - |
| Solar access law | MGL c.40A s.3 | - |
| Incentive | SMART program | - |
| Utilities | Eversource, Nat Grid | - |
| State protection | - | MGL c.40A s.3 solar access |
| Permits | - | Building and electrical from ISD |
| Expedited | - | Residential under 10 kW typical |
| Ground mount | - | Full zoning review |
| Historic | - | HPC approval, rear preferred |
Highlighted rows indicate differences between cities.
Arlington FAQ
Can my town ban solar panels?
No. MGL c.40A s.3 prohibits unreasonable restrictions on solar energy systems.
Is net metering available?
Yes, through the MA DPU tariff subject to allocation caps.
Somerville FAQ
Does Somerville allow solar panels on historic district homes?
Yes, but HPC reviews panel placement. Approval is routine for rear-roof installations; street-facing arrays may be denied or require low-profile designs.
How long does a solar permit take?
ISD typically turns around expedited residential solar permits in about 2 weeks. Eversource interconnection can take 4 to 8 weeks separately.
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