Quick answer
The contract recording a generating facility’s grid-connection relationship and responsibilities, subject to applicable operator requirements and separate operating authorization where required.
Answer: An interconnection agreement records the terms under which a generating facility connects to and operates with an electricity network. It identifies the parties, facility and applicable technical and commercial responsibilities. Its scope depends on the utility, network operator, jurisdiction and project. Signing an agreement is not necessarily permission to energize, nor does it automatically establish export compensation.
Agreement, application and permission are different
An application requests review. An agreement records the accepted connection relationship and obligations. Permission to operate is a separate authorization where that process applies. Building permits and inspections address their own scope; none should be treated as interchangeable proof that the grid connection can operate.
For a concrete U.S. utility example, PG&E’s contractor resources require customer authorization for an installer to apply and explicitly prohibit turning on the system before PG&E permission to operate. That is a named utility’s process, not a worldwide form or sequence. Confirm the required authorization with the actual network operator before energizing or conducting any parallel-operation testing.
What does the interconnection date mean?
The phrase has no single date that applies to every document. It might refer to a target connection date, the agreement’s effective date, completion of connection works or authorized operation, depending on the defined term and context.
Record the event precisely: application submitted / accepted as complete / agreement effective / connection works complete / authorized operation. Keep the source document and any conditions with each date. Do not start a customer’s savings or export-revenue forecast solely from a planned installation date. The relevant tariff, metering and authorization determine when bill treatment applies.
Terms worth reviewing
Read the actual agreement, incorporated tariff and technical schedules together. The following questions are a review aid, not a claim that every agreement includes identical provisions:
| Topic | Question for the project |
|---|---|
| Parties and facility | Who can sign, which account/site applies, and which equipment/configuration is covered? |
| Connection boundary | Where do ownership, operation and maintenance responsibilities change? |
| Technical requirements | Which equipment evidence, protection, settings and verification are required? |
| Capacity and export | Which DC, AC, apparent-power and permitted-export values are defined? |
| Metering | Who supplies the meter, what does it measure and which billing arrangement applies? |
| Costs and works | Which studies, connection works or upgrades are required, who pays and under what conditions? |
| Liability and insurance | What exact obligations, limits and exclusions apply? |
| Changes and termination | How are equipment changes, transfer, disconnection and termination handled? |
Seek qualified legal advice on contractual obligations and qualified engineering review on technical requirements. Do not assume a universal residential insurance amount or that an interconnection contract itself purchases electricity. Check the separate tariff or offtake arrangement where relevant.
Choosing the applicable process
Identify the serving utility/network operator, connection level, export arrangement, technology and existing site generation before selecting a form. A small non-export storage project and an export solar plant may follow different processes. Size alone does not establish a universal “Level 1–4” pathway.
FERC’s official small-generator resource links procedures, agreements and successive orders. It illustrates why a U.S. federal pro forma document must be checked against the applicable current tariff and jurisdiction rather than copied into every rooftop project. International projects require their own current rules.
Ratings do not determine permitted export
For a hypothetical operating point, an inverter supplying 50 kVA at power factor 0.95 has active power 50 × 0.95 = 47.5 kW. This electrical relationship does not establish the facility’s permitted export. Actual capability, site loads, other generation, controls and the agreed connection limit also matter. Do not use apparent-power nameplate multiplied by one assumed power factor as a universal maximum-export formula.
Managing the agreement through handover
Use the interconnection documents checklist to reconcile the submitted design with the agreement and final installation. Track conditions, signatures, required works, inspections and outstanding authorization separately.
As a hypothetical handoff, the agreement is signed but meter work remains outstanding. The project status should read “agreement executed; operating authorization pending,” with an owner for the remaining task. It should not read “operational.” If the inverter model or export setting changes, obtain the required review and retain the revised approval rather than assuming the original agreement covers it.
Designers should document ratings, protection and connection boundaries. Installers should retain submissions, accepted revisions and final authorization. Sales teams should explain unresolved dependencies and use utility-specific status information rather than a guaranteed completion timeline. Hosting-capacity maps can inform early screening; they do not reserve capacity or replace a project review.
Software can assist document organization, but verify its actual deliverables. Neither a generated drawing nor a vendor’s general integration claim establishes code compliance, an accepted agreement or permission to operate.
Frequently asked questions
Is a signed interconnection agreement permission to operate?
Not necessarily. Check the agreement’s conditions and the operator’s required authorization process; signing and energization can be separate milestones.
Does the agreement guarantee net-metering credits?
No universal compensation follows from the agreement alone. Verify the applicable billing/export tariff, eligibility, metering and effective dates.
Can the installer sign for the owner?
Only where the applicable process and authorization allow it. Identify the legal contracting party and required signatories rather than assuming installer authority.
How long does interconnection take?
Use the current operator’s process and project status. Completeness review, studies, works and final authorization create different dependencies; there is no reliable worldwide duration based only on system size.
Related Glossary Terms
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CEO & Co-Founder · SurgePV
Keyur Rakholiya is identified by SurgePV as its CEO and a company co-founder. His SurgePV author page lists only role information that can be tied to the public profile below; credentials, project totals, testing claims, media appearances, and speaking engagements are not asserted without retained evidence.
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