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State power authorityPSEG Long Island (LIPA) interconnection application
PSEG Long Island (LIPA) is a state power authority serving 1,032,490 residential customers in New York (EIA-861, 2025). Applications: Own online portal (PSEG Long Island Interconnection Online Application Portal (IOAP)). Gridpol files PSEG Long Island (LIPA) 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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Partly researched from official sources. verify on first project: psegliny.com blocked automated access; portal URL not confirmed. LIPA uses its own SGIP (mirrors SIR: no fee <=50 kW, 10 business-day review, executed LIPA Standardized Interconnection Contract) and LIPA net metering tariff (not the state NEM law).
PSEG Long Island (LIPA) at a glance
Long Island Power Authority (Long Island Power Authority (operated by PSEG Long Island))
TypeState power authority
EIA utility ID11171
Residential customers1,032,490 (EIA-861, 2025)
Net-metered residential customers95,569 (EIA-861, 2025)
Service territory3 counties in New York
How to applyOwn online portal – PSEG Long Island Interconnection Online Application Portal (IOAP)
Who submitsApplicant via IOAP; contact Power Asset Management PSEG-LI-PAMInterconnect@pseg.com.
Export compensationNEM – LIPA net metering (Tariff for Electric Service)
not governed by state NEM law
SGIP <=50 kW: 10 business days completeness/approval; 10 business days after deficiency info; 30 business days to cure; NEM metering changes within 10 business days of request; 12-month inactivity rule.
Documents PSEG Long Island (LIPA) asks for
- Interconnection application formSIR standardized application (Appendix B inverter-based / C non-inverter) Gridpol prepares this.
- Interconnection agreementsigned NYS Standardized Interconnection Contract (Appendix A) for residential <=50 kW
- Letter of authorization / designated agent form (when applicable)customer-signed letter of authorization if contractor acts as agent
- Site plan / site layout (when applicable)for new service: site plan with interconnection point on satellite image (Google Earth/Bing); existing service: account and meter numbers Gridpol prepares this.
- Other utility-specific documentproject narrative, DG type/fuel, AC kW size, net metered/remote/community designation
- UL 1741 / IEEE 1547 certificationUL 1741 certificate (incl. SB); power-limited equipment needs manufacturer letter
- Inverter spec sheetmanufacturer data sheet for interface equipment
- Other utility-specific documentmanufacturer's verification test procedures (systems <=50 kW)
- Single-line diagram (one-line)single-line for PV and BESS (three-line for other types); must show inverter protection settings, disconnects, components Gridpol prepares this.
- Battery spec sheet (when applicable)SIR Appendix K ESS requirements (stand-alone/hybrid option, nameplate, export/import capacity)
How the PSEG Long Island (LIPA) process runs
- Initial communication / inquiry (single point of contact assigned)
- Submit complete application package (Appendix F) in the customer's name via the utility's Interconnection Online Application Portal (IOAP) - no fee <=50 kW
- Utility reviews within 10 business days; acceptance includes executed Standardized Interconnection Contract and whether utility will witness testing
- Install per accepted design (revised diagram if substantive changes); NEM meter changes by utility
- Verification testing per Appendix F (witnessed or applicant-certified within 5 business days)
- Final acceptance letter (PTO) within 5 business days
Fees
| Fee | Applies to | Note |
|---|---|---|
| $0 | <=50 kW | SIR Step 3 |
| $750 | >50 kW up to 5 MW (and pre-application) | plus CESIR/construction costs; 25% payment if costs >$10,000 |
Utility fees are paid by the installer or customer; they are not part of the Gridpol plan.
Size levels and limits
| Level | Up to | Note |
|---|---|---|
| Expedited (<=50 kW) | 50 kW | inverter-based 50-300 kW certified UL 1741 SB may use expedited path (Exception 1) |
| Standard (>50 kW-5 MW) | 5000 kW | screens + CESIR if needed |
SIR covers DG and ESS up to 5 MW AC
Storage, EV and stamps
Battery storage
SIR covers energy storage systems up to 5 MW AC inverter/converter nameplate; export capped at 5 MW. Appendix K: stand-alone vs hybrid (Option A charged only by DG, B ESS no export, C/D grid charging netted), market participation, nameplate per configuration, total export/import capacity; factory-limited ratings need manufacturer letter.
PE stamp
SIR Appendix F: drawings for systems interconnected at 1,000 V or greater must be sealed by a NYS licensed Professional Engineer. – PE-stamped drawings are not included in Gridpol.
Common issues the utility lists
- Incomplete package per SIR Appendix F checklist (utility must list deficiencies)
- Substantive design variation from accepted diagram without revised diagram
- Failure to cure deficiencies within 30 business days
- Non-certified equipment (fails UL 1741/UL 1741 SB screen)
- Underground secondary network locations may need extra review or be denied
Gridpol’s pre-submission check covers these before we file.
Sources
- LIPA SGIP July 2026: https://www.lipower.org/wp-content/uploads/2026/07/July-2026-SGIP-1.pdf (retrieved 2026-11-13)
New York interconnection rule
New York State Public Service Commission (Department of Public Service)
Interconnection ruleNYS Standardized Interconnection Requirements (SIR), Case 24-E-0621 and predecessors – New York State Standardized Interconnection Requirements and Application Process for New Distributed Generators and/or Energy Storage Systems 5 MW or Less Connected in Parallel with Utility Distribution Systems · source
Applies toPSC-regulated electric utilities: Central Hudson, Con Edison, NYSEG, National Grid (Niagara Mohawk), Orange & Rockland, RG&E; DG/ESS up to 5 MW AC in parallel with distribution system
Application formStatewide standard application package (Appendix F checklist) submitted electronically via utility Interconnection Online Application Portal (IOAP); NYS Standardized Interconnection Contract; property owner consent form (>50 kW); site control form
Timelines<=50 kW: utility determines completeness/approval within 10 BD; applicant has 30 BD to supply missing info; acceptance includes executed contract; metering changes for net metered systems within 10 BD; verification test within 10 BD of notice (or applicant certifies within 5 BD if not witnessed); final acceptance letter within 5 BD. >50 kW: completeness 10 BD, CESIR 60 BD, etc.
FeesNo application fee <=50 kW; $750 pre-application report (credited); supplemental screening $2,500 nonrefundable up to $5,000 actual; CESIR and upgrades at cost.
InsuranceNo general liability insurance may be required for facilities <=300 kW AC (PSC recommends adequate insurance); 300 kW-1 MW $1M; >1-5 MW $2M per occurrence/$5M aggregate; >5 MW $5M (Standardized Contract sec. 7).
External disconnectExternal manual visible gang-operated load-break disconnect required for systems >25 kW and for non-inverter systems <=25 kW; inverter-based systems <=25 kW exempt. Lockable with 3/8" shank padlock, labeled 'Generator Disconnect Switch' (SIR Section II.D).
Export compensationNEM – PSL 66-j (solar etc.) and 66-l (wind); PSC VDER orders (Case 15-E-0751)
Mass-market customers interconnected after 2022 receive net metering with a Customer Benefit Contribution charge; larger projects on Value Stack (VDER). Details per utility tariff; not verified here.
Municipal utilities (NYPA customers) and electric cooperatives are not bound by the SIR; PSEG Long Island/LIPA follows its own (LIPA) SIR-based requirements.
- NY DPS - Distributed Generation Information: https://dps.ny.gov/distributed-generation-information (retrieved 2026-11-13)
- NYS SIR effective October 1, 2026 (PDF): https://dps.ny.gov/nys-standardized-interconnection-requirements-effective-october-1-2026 (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.