What is the application fee for a system above 50 kW? The state requirements reference an application fee repeatedly but never set an amount; it lives in each utility tariff.

Only the utility holds this figure. Ask before you quote the job.

Do you have twelve months of daytime minimum load data for this line section? That decides whether the minimum load test or the 15 percent peak load fallback applies.

Only the utility holds this figure. Ask before you quote the job.

New York solar interconnection rules, tiers and fees

How the size is measured

the alternating current generator nameplate rating, aggregated on the customer side of the point of common coupling. For a storage system it is the AC inverter or converter nameplate rating, also aggregated at the point of common coupling. For a hybrid project the governing figure is the sum of the AC nameplate ratings of all generation and all storage.

Size bands and what each one obliges

50 kW or less Size 0 to 50 kW	No application fee is required. No liability insurance tier is stated below 300 kW AC. Completeness and approval are determined within 10 business days and a formal acceptance letter follows within 5 business days of a successful test. No application fee No insurance stated below 300 kW AC
Above 50 kW up to 300 kW, expedited Size 50.001 to 300 kW	An inverter based system in this band may follow the expedited process provided the inverter is certified and tested to the current revision of UL 1741 including supplement B. No insurance tier is stated below 300 kW AC. UL 1741 supplement B certified inverter Application fee set in the utility tariff, not in the requirements document
Above 300 kW up to 5 MW Size 300.001 to 5000 kW	Liability insurance of $1,000,000 per occurrence and in the aggregate applies from 300 kW AC to 1 MW AC, rising to $2,000,000 per occurrence and $5,000,000 aggregate above 1 MW AC. Preliminary screening completes within 15 business days and a coordinated electric system interconnection review within 60 business days of the required information. $1,000,000 liability insurance from 300 kW AC to 1 MW AC $2,000,000 per occurrence and $5,000,000 aggregate above 1 MW AC

50 kW or less Size 0 to 50 kW

No application fee is required. No liability insurance tier is stated below 300 kW AC. Completeness and approval are determined within 10 business days and a formal acceptance letter follows within 5 business days of a successful test.

No application fee
No insurance stated below 300 kW AC

Above 50 kW up to 300 kW, expedited Size 50.001 to 300 kW

An inverter based system in this band may follow the expedited process provided the inverter is certified and tested to the current revision of UL 1741 including supplement B. No insurance tier is stated below 300 kW AC.

UL 1741 supplement B certified inverter
Application fee set in the utility tariff, not in the requirements document

Above 300 kW up to 5 MW Size 300.001 to 5000 kW

Liability insurance of $1,000,000 per occurrence and in the aggregate applies from 300 kW AC to 1 MW AC, rising to $2,000,000 per occurrence and $5,000,000 aggregate above 1 MW AC. Preliminary screening completes within 15 business days and a coordinated electric system interconnection review within 60 business days of the required information.

$1,000,000 liability insurance from 300 kW AC to 1 MW AC
$2,000,000 per occurrence and $5,000,000 aggregate above 1 MW AC

The screens that decide it

Within the 5 MW ceiling Limit 5000 kW.
The requirements cover facilities of 5 MW AC or less aggregated at the point of common coupling, and export onto the distribution system is capped at 5 MW.
Aggregate generation under the daytime minimum load on the line section 100 percent of line section minimum load, a figure only the utility holds.
New York tests against daytime minimum load where twelve months of data exist, and falls back to 15 percent of annual peak load only where daytime minimum load data is unavailable. The 15 percent figure is the fallback, not the primary test.
Aggregate generation under 10 percent of line section peak load for the grounding screen 10 percent of line section peak load, a figure only the utility holds.
New York cures a grounding screen failure only where the aggregate AC nameplate rating is 10 percent or less of line section peak load. That is stricter than the penetration screen.

Ask the utility this, before you sell it

What is the application fee for a system above 50 kW? The state requirements reference an application fee repeatedly but never set an amount; it lives in each utility tariff.
Do you have twelve months of daytime minimum load data for this line section? That decides whether the minimum load test or the 15 percent peak load fallback applies.
Is this address served by Long Island Power Authority, a municipal system or a cooperative? The state requirements say nothing about which utilities they bind, and Long Island publishes its own separate procedures.
Is this customer on net metering or the value stack, and what is the current compensation?

Worth knowing before you quote

New York publishes an optional pre application report for a non refundable $750, credited toward the application fee if a formal application follows within 15 business days. Supplemental screening is $2,500 non refundable with actual costs billable to a $5,000 maximum. A storage protection and control review is calculated as $500 plus $4 per kW capped at $3,000. For a net metered system the utility side equipment cost is capped, at $350 for solar of 25 kW or less and $750 for wind of 25 kW or less. There is no separate permission to operate step: parallel operation may begin on satisfactory completion of the verification tests.

Utility programs we have read in New York

LIPA and PSEG Long Island small generator interconnection

Source

New York State Standardized Interconnection Requirements and Application Process for New Distributed Generators and Energy Storage Systems 5 MW or Less, PSC Case 24-E-0621, effective 9 February 2026

Read and recorded 2026-09-12. The requirements document itself contains no statement about which utilities it binds. It refers throughout only to the utility, and reading the whole document found no mention of municipal systems, cooperatives, the Long Island Power Authority or the New York Power Authority. Coverage of those utilities is therefore unknown rather than excluded, and Long Island runs its own separate small generator procedures.

Solar and battery interconnection rules in New York

Size bands and what each one obliges

The screens that decide it

Ask the utility this, before you sell it

Worth knowing before you quote

Utility programs we have read in New York

What to do with this