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Municipal utilityHoulton Water Company interconnection application
Houlton Water Company is a municipal utility serving 3,907 residential customers in Maine (EIA-861, 2025). Gridpol files Houlton Water Company interconnection applications for licensed installers – solar, storage and EV chargers – with single-line diagram and site plan, unlimited for $500 a month.
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Maine’s commission rule (65-407 C.M.R. Chapter 324) does not bind municipal utilitys; Houlton Water Company sets its own interconnection policy. We confirm its form on the first project. Not addressed in Ch. 324 text; Maine's consumer-owned T&D utilities are generally Commission-regulated T&D utilities - confirm applicability with the specific utility.
Houlton Water Company at a glance
Houlton Water Company
TypeMunicipal utility
EIA utility ID8883
Residential customers3,907 (EIA-861, 2025)
Net-metered residential customersnone reported
Service territory1 county in Maine
Documents Houlton Water Company asks for
- Interconnection application formFilled in by us from your project data in the utility’s portal or on its form. Gridpol prepares this.
- Single-line diagram (one-line)Drawn by us from your equipment data: modules, strings, inverter, battery, disconnects, point of interconnection, meter. Gridpol prepares this.
- Site plan / site layoutDrawn by us from your roof sketch or photos: array, inverter, battery, disconnect, meter and main panel locations. Gridpol prepares this.
- PV module spec sheetManufacturer data sheet of the modules.
- Inverter spec sheetManufacturer data sheet (string inverter, microinverter or hybrid inverter).
- Customer signatureThe account holder signs the application or authorization. We send the signature link.
- Recent electric billName, service address, account and meter number must match the application.
- Final inspection sign-offApproved electrical inspection from the authority having jurisdiction after installation.
Typical documents for US utilities – not yet verified for Houlton Water Company. We confirm Houlton Water Company’s exact list on the first project.
Maine interconnection rule
Maine Public Utilities Commission
Interconnection rule65-407 C.M.R. Chapter 324 – Small Generator Interconnection Procedures · source
Applies toTransmission and distribution utilities (T&D Utilities: CMP, Versant Power and other entities owning T&D plant for compensation in Maine) for generators subject to Commission jurisdiction (not FERC-jurisdictional). Rule text does not separately address consumer-owned utilities.
Application formStatewide standard forms adopted by Commission order must be used for all interconnection applications, interconnection agreements and study agreements (Ch. 324 s.4); deviations need Commission approval
TimelinesCompleteness notice within 5 business days (10 business days to cure); Level 1 screens 10 business days, deemed approval after 20 business days; Level 2 screens 15 business days; executable agreement within 10 business days of passing screens; applicant returns executed agreement within 30 business days; utility site visit before Level 1 agreement. Agreement may be terminated if not energized within 12 months of approval.
FeesLevel 1: $100. Level 2: $100 + $2/kW of generator capacity. Higher levels: study costs per Ch. 324 s.3 cost responsibility.
InsuranceUtility may require insurance only above thresholds: inverter-based none <=1 MW, $1M >2-5 MW, $2M >5 MW; non-inverter none <=50 kW, $500k 50-500 kW, $1M 0.5-2 MW, $2M 2-5 MW, $3M >5 MW. No additional liability insurance for s.5-compliant facilities unless applicant agrees.
External disconnectUtility shall not require additional controls, expressly including a utility-accessible disconnect switch, for facilities certified under Ch. 324 s.5 (IEEE 1547/UL 1741).
Export compensationNet billing – 35-A M.R.S. s.3209-A (kWh credit) and s.3209-B (tariff rate); 65-407 C.M.R. Chapter 313 (Net Energy Billing)
Net energy billing for DG resources <5 MW (kWh-credit and tariff-rate programs). Unused kWh credits expire per Commission rule; value remitted to low-income programs. Heavily amended 2023-2025 (PL 2025 c.430 ends new agreements for utility-side-of-meter resources after 2025-12-31); check current Ch. 313 for new projects.
Not addressed in Ch. 324 text; Maine's consumer-owned T&D utilities are generally Commission-regulated T&D utilities - confirm applicability with the specific utility.
- 65-407 C.M.R. ch. 324 (LII): https://www.law.cornell.edu/regulations/maine/department-65/division-407/chapter-324 (retrieved 2026-11-13)
- Ch. 324 s.11 Level 1: https://www.law.cornell.edu/regulations/maine/65-407-C-M-R-ch-324-SS-11 (retrieved 2026-11-13)
- Ch. 324 s.12 Level 2: https://www.law.cornell.edu/regulations/maine/65-407-C-M-R-ch-324-SS-12 (retrieved 2026-11-13)
- Ch. 324 s.15 General provisions (insurance, disconnect): https://www.law.cornell.edu/regulations/maine/65-407-C-M-R-ch-324-SS-15 (retrieved 2026-11-13)
- 35-A M.R.S. s.3209-A Net energy billing: https://www.mainelegislature.org/legis/statutes/35-A/title35-Asec3209-A.html (retrieved 2026-11-13)
- MPUC Order Adopting Rule, Docket 2023-00103: https://www.maine.gov/mpuc/sites/maine.gov.mpuc/files/inline-files/PUC%20Order%20Ch.%20324%2011-3-23.docx (retrieved 2026-11-13)
$500 / month
Unlimited interconnection applications. 12-month agreement, signed online. The agreement starts the day you sign; first invoice right away, then monthly.
- Unlimited interconnection applications
- Single-line diagram and site plan for every application
- Pre-submission check against the utility’s requirements
- Homeowner e-signature link for the authorization
- Filing in your utility portal accounts or by the utility’s method
- Utility questions, corrections and resubmissions
- Follow-up through approval, inspection and PTO
- Customer list, exports, API and webhooks
Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.