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Municipal utility

Town of Berlin interconnection application

Town of Berlin is a municipal utility serving 2,756 customers in Maryland (EIA-861, 2025). Gridpol files Town of Berlin 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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Maryland’s interconnection rule (COMAR 20.50.09 (.01-.14)) applies to Town of Berlin. Levels, timelines and documents below come from that rule; Town of Berlin’s own form and portal are confirmed on the first project.

Town of Berlin at a glance

Utility

Town of Berlin

Type

Municipal utility

EIA utility ID

1615

Customers

2,756 (EIA-861, 2025, short form: all customer classes)

Net-metered residential customers

none reported

Service territory

1 county in Maryland

Wholesale supplier / association

American Municipal Power, Inc. (AMP)
American Municipal Power, Inc. (AMP)

Documents Town of Berlin asks for

  • Interconnection application formRequired by the state rule Gridpol prepares this.
  • Inverter spec sheetRequired by the state rule
  • Customer signatureRequired by the state rule
  • Interconnection agreementRequired by the state rule
  • Final inspection sign-offRequired by the state rule
  • Other utility-specific documentRequired by the state rule

Documents required by the Maryland rule. Town of Berlin may ask for more on its own form; we confirm on the first project.

Maryland interconnection rule

Commission

Maryland Public Service Commission (PSC)

Interconnection rule

COMAR 20.50.09 (.01-.14) – Small Generator Facility Interconnection Standards · source

Applies to

Small generator facilities (incl. storage) interconnecting to a utility's distribution system in Maryland, under PSC jurisdiction (Subtitle 50 'Service Supplied by Electric Companies': BGE, Pepco, Delmarva, Potomac Edison, SMECO, Choptank and other PSC-regulated electric companies). PJM-jurisdictional wholesale requests follow PJM.

Application form

Utility-specified interconnection request form (utilities must align forms with other MD utilities) with electronic signature/submission and status tracking on the utility website by applicant or authorized designee (20.50.09.04).

Timelines

Level 1: 5 BD completeness, 15 BD verification, 20 BD approval/PTO; interconnection agreement signed within 30 calendar days. Conditional approval validity: <=100 kW must deliver certificate of completion within 6 months, >100 kW within 12 months (+6 months extension) (20.50.09.06N).

Fees

No fee for Level 1; Levels 2-4 fees specified in utility tariff (20.50.09.05); no fees for PJM-jurisdictional requests; pre-application report fee per tariff.

Insurance

COMAR 20.50.09.06 contains no insurance requirement; PUA §7-306 bars electric companies from requiring net-metered systems meeting NEC/IEEE/UL to buy additional liability insurance.

External disconnect

Required: lockable, visible-break isolation device accessible to the utility, customer-owned, between facility and point of interconnection (20.50.09.06G); utility lockbox allowed (06H). No inverter waiver in rule text.

Export compensation

NEM – Md. Code, Public Utilities §7-306; COMAR 20.50.10
Offered until earlier of 3,000 MW statewide or 2027-07-01; 5 MW for community solar/meter aggregation; excess credited 12 months valued at commodity rate, paid after April cycle; indefinite accrual option not for munis/coops; coops <250,000 may pay monthly. COMAR 20.50.10.01 still shows 1,500 MW (stale).

Not bound by the rule

Net metering statute §7-306 contains specific provisions for municipal utilities and cooperatives, i.e. they offer net metering too; PSC-regulated coops (SMECO, Choptank) follow COMAR 20.50.09.

Other utilities in Maryland

All Maryland utilities →

Gridpol Unlimited

$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
Get started

Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.

Get started – $500/month unlimited