Solar Installation — Maine license requirements
01 The project
The starting point is the work itself — Solar Installation in Maine. The job determines which trades are involved, and the trades determine which license classifications may be required.
| Component | Trade |
|---|---|
| Solar energy system | Solar |
| Electrical interconnection | Electrical |
02 Jurisdiction
This project is evaluated for Maine — the no-statewide-GC state. Maine issues no general or residential contractor license; the work is regulated by the individual trade credentials (electrician ch. 17, plumber ch. 49, fuel technician ch. 139), the ch. 128 door-to-door home-repair registration, and municipal building/plumbing permits (MUBEC; 30-A §4215). Maine jurisdiction page.
Building-permit and plumbing-permit fees are municipality-set and were not read — LOCAL_AUTHORITY_REQUIRED. Maine imposes no statewide surety bond and no statewide general-liability minimum on any board credential, so no amount appears here to verify against. State requirements are not the complete story for any locality.
03 Trade → license
Relations below are recorded per state — only this jurisdiction's classifications are shown.
Trades involved: Solar, Electrical.
- May require MASTER-ELECTRICIAN — Master Electrician confirmed S-ME-32-1201 rule ME-SOLARThe default answer: rooftop PV is electrical construction work under ch. 17 — a licensed electrician performs it and a master or limited electrician applies for the electrical permit (§1102-C). There is NO generic solar contractor license; the only solar-specific provision is LD 1730's plug-in PV rule (>420 W–1,200 W must be installed by a Maine licensed electrician).
- Component basis JOURNEYMAN-ELECTRICIAN — Journeyman Electrician confirmed S-ME-32-1202-B rule ME-ELECTRICAL-LICENSEWorker limb: a journeyman electrician employed by a supervising master/limited electrician or an electrical company — §1202-B(4).
- Alternative path LIMITED-ELECTRICIAN — Limited Electrician confirmed S-ME-EEB-LICENSING rule ME-ELECTRICAL-LICENSEAlternative class: a limited electrician (house wiring) is one of the two classes authorised to apply for an electrical permit (§1102-C(2)); its exact scope is set by board rules, not redefined here.
- Alternative path MASTER-FUEL-TECHNICIAN — Master Oil Burner and/or Solid Fuel Technician confirmed S-ME-FUEL-BOARD rule ME-FUEL-LICENSECONDITIONAL solar-thermal limb: solar heating equipment tied to oil/gas combustion systems is fuel-technician work (ch. 139); PV remains electrical. The Fuel Board page lists the relevant license categories.
04 Scope
What the official sources say about the work involved — typed assertions, never a boolean "covers". Interpretations are marked as such.
- Officially included MASTER-ELECTRICIAN Engaging In The Business Of Installing Electrical Wires Conduits Apparatus Fixtures And Equipment (may_perform) 32 MRSA ch. 17 (§1202-B; board class page) S-ME-EEB-MASTER Maine has no separate 'electrical contractor' license: the business-holding credential IS the master electrician license. A limited electrician shares the permit authority.
- Officially included JOURNEYMAN-ELECTRICIAN Electrical Installations While Employed By A Master Limited Or Electrical Company And Supervising A Capped Crew (may_perform) 32 MRSA §1202-B(4) S-ME-32-1202-B A journeyman may supervise a small crew but not hold the business or pull the permit — that is the master/limited class.
- Officially included MASTER-FUEL-TECHNICIAN Installing Cleaning Servicing Altering Or Repairing Oil Burning And Or Solid Fuel Equipment (may_perform) 32 MRSA §18132(1) S-ME-32-18132 The credential is endorsement-scoped: an oil burner authority does not authorise propane/natural-gas work and vice versa.
- Officially excluded MASTER-FUEL-TECHNICIAN Line Voltage Electrical Work Outside The Fuel License Restrictions (may_not_perform) 32 MRSA §1201-A(7)-(8) + Fuel Board MOU list S-ME-FUEL-BOARD The HVAC replacement page's decisive boundary: combustion work = fuel license; line voltage = electrician; water/steam connections = the MOU crossovers.
- Requires another classification MASTER-ELECTRICIAN A Maine Licensed Electrician For Plug In Photovoltaic Or Battery Systems Over 420 Watts Up To 1200 Watts (requires) 35-A MRSA §3475 (LD 1730 / P.L. 2025 c. 644) S-ME-EEB The only solar-specific Maine provision found; ordinary rooftop PV has no separate license and is ch. 17 electrical work.
05 Requirements
| Requirement | Kind | Statement | Source |
|---|---|---|---|
| Plug-in photovoltaic/battery systems over 420 W up to 1,200 W must be installed by a Maine licensed electrician Electricians' Board staff announcement (LD 1730 / Chapter 160 proposed amendment) read 2026-10-05 | permit | The Electricians' Examining Board notice: the 132nd Legislature enacted LD 1730 (P.L. 2025, c. 644, effective 2026-07-29), adding 35-A MRSA §3475 and authorising retail electricity customers to install and operate a plug-in-photovoltaic or plug-in battery system at their service address; if the system's inverter output exceeds 420 watts but is no more than 1,200 watts per service address it must be installed by a Maine licensed electrician and use a dedicated circuit with a single receptacle outlet. The Board proposed to amend Chapter 160 to clarify 'standard electrical outlet' (receptacle outlet, NEC Article 100). | S-ME-EEBSource S-ME-EEB — Maine Electricians' Examining BoardElectricians' Examining Board — official page — Electricians' Board staff announcement (LD 1730 / Chapter 160 proposed amendment) read 2026-10-05 https://www.maine.gov/pfr/professionallicensing/professions/electricians Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05: board purpose (Master, Journeyman, Limited, Apprentice, Journeyman-in-training, Helper licenses + permits); 'OPOR does not issue paper license verifications'; PROV examination contract; adopted Chapter 120 (2026 NEC) for installations from 2026-07-01; LD 1730 (P.L. 2025 c. 644, effective 2026-07-29) plug-in-photovoltaic/battery rule (>420 W to 1,200 W must be installed by a Maine licensed electrician); MOUs with the Fuel Board for mini-split heat pumps and hot-water/steam/warm-air systems; 'Clarification of Incidental Work' bulletin; electrical permit scope-of-work fee schedule exists (amounts NOT read). |
| An electrical installation may not be made unless by an electrician licensed by the board 32 MRSA §1201 verbatim + §1202-B (read 2026-10-05) | license | 32 MRSA §1201 verbatim: 'An electrical installation may not be made unless by an electrician licensed by the board except as provided in this chapter.' The licensed classes under §1202-B are master, journeyman, limited, journeyman-in-training, apprentice and helper electrician; a master or limited electrician is the class authorised to apply for an electrical permit under §1102-C(2). | S-ME-32-1201Source S-ME-32-1201 — Maine Legislature — Maine Revised Statutes (legislature.maine.gov)32 MRSA §1201 — License required — 32 MRSA §1201 verbatim + §1202-B (read 2026-10-05) https://legislature.maine.gov/statutes/32/title32sec1201.html Retrieved 2026-10-05 · last verified 2026-10-05 Read 2026-10-05: 'An electrical installation may not be made unless by an electrician licensed by the board except as provided in this chapter.' Backs REQ-ME-ELECTRICAL-LICENSE-001 and rule ME-ELECTRICAL-LICENSE. |
| An electrical permit must be obtained from the board before the installation, with statutory exceptions 32 MRSA §1102-C(1)-(5) verbatim (read in full 2026-10-05) | permit | 32 MRSA §1102-C: 'a permit must be obtained from the board before an electrical installation may be performed.' The application must be submitted by a licensed master electrician or limited electrician; an inspection is required before wiring is enclosed; a utility must require proof of permit before connecting power. §1102-C(5) exempts a single-family dwelling installation performed by a licensed electrician, an owner in an existing single-family dwelling they occupy, minor repair work (lamps, fuses, lighting fixtures, switches, sockets, outlets, low-voltage equipment, service-entrance repair), work by ch. 139 fuel licensees, the ch. 49 plumber and ch. 69-C pump-installer like-in-kind exceptions, and work permitted by a municipality under 30-A §4173. | S-ME-32-1102-CSource S-ME-32-1102-C — Maine Legislature — Maine Revised Statutes (legislature.maine.gov)32 MRSA §1102-C — Permit; inspection of electrical installations — 32 MRSA §1102-C(1)-(5) verbatim (read in full 2026-10-05) https://legislature.maine.gov/statutes/32/title32sec1102-C.html Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05 (PL 2017 c. 198 §6; PL 2025 c. 88 §1). Permit required before an electrical installation; application by a licensed master or limited electrician; inspection before wiring is enclosed; utility requires proof of permit. Exceptions (§5) include single-family installation by a licensed electrician (A), an owner in an existing single-family dwelling they occupy (A-1, 2025), utility/transmission work, minor repair work incl. lamps/fuses/fixtures/switches/outlets/low-voltage/service-entrance repair (D), municipal-permit work under 30-A §4173 (E), industrial/manufacturing (F-G), ch. 139 fuel licensees (H-I), ch. 49 plumbers' like-in-kind water pump/heater conductor work in residential properties (J), ch. 69-C pump installers ≤3 hp (K). Combined permit+inspection service fee set by rule, ≤$100. Backs REQ-ME-ELECTRICAL-PERMIT-001 and rule ME-PERMIT. |
| Maine issues NO statewide general or residential-building contractor license — verified absence OPOR professions-and-occupations list (read in full 2026-10-05) | exemption | The Office of Professional and Occupational Regulation's complete professions-and-occupations list enumerates every credential the office administers — Accountants, Electricians, Oil and Solid Fuel Technicians, Plumbers, Propane & Natural Gas Technicians, Door-to-Door Home Repair Sellers and dozens of others — and contains no 'contractor' or 'general contractor' entry. Maine regulates construction through individual TRADE licenses (electricians, plumbers, fuel technicians), the door-to-door home-repair registration, and MUNICIPAL building and plumbing permits; there is no statewide contractor license to obtain, renew or verify. | S-ME-OPOR-PROFESSIONSSource S-ME-OPOR-PROFESSIONS — Maine Office of Professional and Occupational Regulation (OPOR), Department of Professional and Financial RegulationOPOR — Professions and Occupations (complete credential list) — OPOR professions-and-occupations list (read in full 2026-10-05) https://www.maine.gov/pfr/professionallicensing/professions Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05. Enumerates every credential OPOR administers — Accountants … Electricians … Oil and Solid Fuel Technicians … Plumbers … Propane & Natural Gas Technicians … Door-to-Door Home Repair Sellers … There is NO 'contractor' or 'general contractor' entry. This is the official basis for the verified absence of any statewide Maine contractor license (REQ-ME-NO-GC-LICENSE-001) and for CONFLICT-ME-001's resolving side. |
| Oil, solid fuel, propane and natural gas work requires a Maine Fuel Board license 32 MRSA §18132 + ch. 139 section list + Fuel Board pages (read 2026-10-05) | license | 32 MRSA ch. 139 requires a Maine Fuel Board license to install, clean, service, alter or repair oil burning, solid fuel, propane or natural gas equipment (§18102), with the license categories defined in §§18132-18141: Master and Journeyman and Apprentice Oil Burner and/or Solid Fuel Technician, Propane and Natural Gas Technician and Helper, and the limited tank-installer, wood-pellet and energy-auditor licenses. A master oil burner technician 'may install, clean, service, alter or repair oil burning equipment' and must hold one or more authorities; propane and natural gas applicants must first pass a Maine Fuel Board propane and gas examination (§18135(2)). | S-ME-32-18132Source S-ME-32-18132 — Maine Legislature — Maine Revised Statutes (legislature.maine.gov)32 MRSA §18132 — Master oil burner technician or solid fuel technician — 32 MRSA §18132 + ch. 139 section list + Fuel Board pages (read 2026-10-05) https://legislature.maine.gov/statutes/32/title32sec18132.html Retrieved 2026-10-05 · last verified 2026-10-05 Read 2026-10-05: scope + qualifications verbatim — a master oil burner technician may install/clean/service/alter/repair oil burning equipment and hold one or more authorities (#1/#2 oils up to 15 gal/h; #1/#2 over 15 gal/h; #4/#5/#6; #1-6; pellet-fired central heating appliances); a master solid fuel technician may install/clean/service/alter/repair solid fuel burning equipment. Qualification = board exam + 4 years of licensed practical experience, of which at least 2 years as a licensed journeyman. |
| No statewide surety-bond condition attaches to any Maine board credential — verified absence OPOR board list + ch. 17/49/139 sections read (no bond provision) 2026-10-05 | bond | Maine's construction credentials are individual trade LICENSES issued by the Electricians', Plumbers' and Maine Fuel Boards, and none of the board pages or licensing statutes read here imposes a surety-bond condition on licensure: the plumber and electrician pages list license, renewal, background-check, late and penalty fees but no bond, and ch. 49, ch. 17 and ch. 139 each contain no bond requirement. There is therefore no statewide contractor bond to post, verify or renew. | S-ME-OPOR-PROFESSIONSSource S-ME-OPOR-PROFESSIONS — Maine Office of Professional and Occupational Regulation (OPOR), Department of Professional and Financial RegulationOPOR — Professions and Occupations (complete credential list) — OPOR board list + ch. 17/49/139 sections read (no bond provision) 2026-10-05 https://www.maine.gov/pfr/professionallicensing/professions Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05. Enumerates every credential OPOR administers — Accountants … Electricians … Oil and Solid Fuel Technicians … Plumbers … Propane & Natural Gas Technicians … Door-to-Door Home Repair Sellers … There is NO 'contractor' or 'general contractor' entry. This is the official basis for the verified absence of any statewide Maine contractor license (REQ-ME-NO-GC-LICENSE-001) and for CONFLICT-ME-001's resolving side. |
06 Rule: ME-SOLAR
Verified absence of a generic solar license: rooftop PV is electrical construction work under ch. 17, so a licensed electrician performs it and a master/limited electrician applies for the electrical permit. The only solar-specific Maine provision is LD 1730 / P.L. 2025 c. 644 (35-A MRSA §3475, effective 2026-07-29): a plug-in-photovoltaic or plug-in battery system whose inverter output exceeds 420 W but is no more than 1,200 W per service address must be installed by a Maine licensed electrician. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| solar-electrical | solar_is_electrical_work |
|
| plug-in-pv | plug_in_pv_electrician_required |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-ME-EEBS-ME-32-1201
07 Rule: ME-ELECTRICAL-LICENSE
32 MRSA §1201: 'An electrical installation may not be made unless by an electrician licensed by the board except as provided in this chapter.' The licensed classes are master, journeyman, limited, journeyman-in-training, apprentice and helper electrician (§1202-B). Test ME-ELECTRICAL-EXCEPTIONS first. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| license-required | electrical_license_required |
|
| exception | electrical_license_exception |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-ME-32-1201S-ME-32-1202-BS-ME-32-1201-A
08 Rule: ME-FUEL-LICENSE
32 MRSA ch. 139 (Maine Fuel Board) licenses oil, solid fuel, propane and natural gas technicians: Master/Journeyman/Apprentice Oil Burner and/or Solid Fuel Technician, Propane and Natural Gas Technician/Helper, and limited categories. §18102 requires the license; §18132 defines the master scope (install, clean, service, alter or repair oil/solid fuel equipment) and the endorsement authorities. Propane/natural-gas applicants must pass a Maine Fuel Board exam (§18135(2)) with CETP certificates. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| fuel-license-required | fuel_license_required |
|
| no-fuel-license | fuel_license_not_required | — |
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-ME-32-18131S-ME-32-18132S-ME-FUEL-BOARD
09 Rule: ME-PERMIT
32 MRSA §1102-C: a permit must be obtained from the board before an electrical installation, applied for by a licensed master or limited electrician; inspection is required before wiring is enclosed and a utility must require proof of permit before connecting power. §1102-C(5) exempts, among others, a single-family dwelling installation by a licensed electrician, the owner's existing dwelling, minor repair work (lamps, fuses, fixtures, switches, sockets, outlets, low-voltage, service-entrance repair), ch. 139 fuel work, and the ch. 49 / ch. 69-C like-in-kind exceptions. The combined permit+inspection service fee is capped at $100 by statute (§1102-C(4)); the rule-set amounts were not read (NOT_VERIFIED). Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| permit-required | state_electrical_permit_required |
|
| permit-exception | electrical_permit_exception |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-ME-32-1102-C
10 No solar license — the ch. 17 electrical credential
| Question | Maine answer | Source |
|---|---|---|
| Generic solar contractor license | none exists — rooftop PV is ch. 17 electrical construction work (rule ME-SOLAR) | S-ME-32-1201 |
| Default credential path | a licensed electrician performs it; a master or limited electrician applies for the electrical permit (§1102-C(2)) | S-ME-32-1102-C |
| Plug-in PV / battery rule (LD 1730) | if the inverter output exceeds 420 W but is no more than 1,200 W per service address, the system must be installed by a Maine licensed electrician on a dedicated circuit with a single receptacle outlet (effective 2026-07-29) | S-ME-EEB |
| Solar-thermal limb | solar heating equipment tied to oil/gas combustion systems is fuel-technician work (ch. 139); PV remains electrical | S-ME-32-18132 |
| Bond | none statewide — verified absence (rule ME-NO-BOND) | S-ME-OPOR-PROFESSIONS |
11 Permit and verification layer
Maine separates the credential from the permit: the STATE boards decide who may work (the electrician / plumber / fuel licenses), while the municipality issues the building permit under the Maine Uniform Building and Energy Code (10 MRSA §9724) and the plumbing permit under 30-A §4215. Permit fees are municipality-set and were not read — LOCAL_AUTHORITY_REQUIRED. S-ME-10-9724
Verify the credential that actually applies on the official lookup before relying on any outcome here: OPOR licensee search (the Electricians', Plumbers' and Maine Fuel Boards publish their own surfaces through the ALMS portal). S-ME-OPOR-LOOKUP
Source S-ME-OPOR-PROFESSIONS — Maine Office of Professional and Occupational Regulation (OPOR), Department of Professional and Financial Regulation
OPOR — Professions and Occupations (complete credential list) — OPOR professions-and-occupations list (read in full 2026-10-05)
https://www.maine.gov/pfr/professionallicensing/professions
Retrieved 2026-10-05 · last verified 2026-10-05
Read in full 2026-10-05. Enumerates every credential OPOR administers — Accountants … Electricians … Oil and Solid Fuel Technicians … Plumbers … Propane & Natural Gas Technicians … Door-to-Door Home Repair Sellers … There is NO 'contractor' or 'general contractor' entry. This is the official basis for the verified absence of any statewide Maine contractor license (REQ-ME-NO-GC-LICENSE-001) and for CONFLICT-ME-001's resolving side.