Investor-owned utility

NYSEG interconnection application

NYSEG is an investor-owned utility serving 793,702 residential customers in New York (EIA-861, 2025). Applications: Own online portal (Distributed Generation Online Portal (IOAP)). Gridpol files NYSEG 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: NYSEG pages did not render/time out on 2026-11-13; portal login URL and utility-specific checklist not confirmed. $750 fee for pre-applications/>50 kW reported for NYSEG portal page in search snippet.

NYSEG at a glance

Utility

New York State Elec & Gas Corp (Avangrid (Iberdrola))

Type

Investor-owned utility

EIA utility ID

13511

Residential customers

793,702 (EIA-861, 2025)

Net-metered residential customers

12,620 (EIA-861, 2025)

Service territory

44 counties in New York

How to apply

Own online portal – Distributed Generation Online Portal (IOAP) · official link

Who submits

Applicant (customer or contractor as agent with LOA) via IOAP per SIR.

Export compensation

NEM – NY net metering (Phase One NEM for mass-market) / Value Stack
compensation per utility tariff under PSC Case 15-E-0751; verify per-project eligibility

Review time (official)

SIR <=50 kW: utility has 10 business days to determine completeness/approval; 10 business days after deficiency info received; applicant has 30 business days to cure or is removed from queue; NEM metering changes within 10 business days of completion notice; witnessed verification test within 10 business days of notice; applicant certifies test within 5 business days; final acceptance letter within 5 business days; project may be removed after 12 months of inactivity.

Documents NYSEG 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 NYSEG 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

NYSEG Distributed Generation: https://www.nyseg.com/w/distributed-generation (retrieved 2026-11-13)
NYSEG Online Portal: https://www.nyseg.com/w/online-portal (retrieved 2026-11-13)
NYS Standardized Interconnection Requirements (SIR), effective Oct 1, 2026: https://dps.ny.gov/nys-standardized-interconnection-requirements-effective-october-1-2026 (retrieved 2026-11-13)

New York interconnection rule

Commission

New York State Public Service Commission (Department of Public Service)

Interconnection rule

NYS 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 to

PSC-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 form

Statewide 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.

Fees

No application fee <=50 kW; $750 pre-application report (credited); supplemental screening $2,500 nonrefundable up to $5,000 actual; CESIR and upgrades at cost.

Insurance

No 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 disconnect

External 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 compensation

NEM – 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.

Not bound by the rule

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)

Other utilities in New York

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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.