Public authority
PSEG Long Island
Nassau County, Suffolk County, and the Rockaways. Operated by PSEG under contract to the Long Island Power Authority, which owns the system and sets the tariff.
At a glance
The numbers that decide your project
Default residential rate
Rate 180
The default residential rate across Nassau and Suffolk.
All-in cost of energy
$0.22–$0.29 / kWh
Delivery plus supply plus surcharges.
Filed PSEG Long Island tariff schedule · verified Apr 2026
Basic service charge
$17 / month
Solar does not remove this.
Filed PSEG Long Island tariff schedule · verified Apr 2026
Customer Benefit Contribution
Not applicable
Outside the PSC order that set CBC for the six investor-owned utilities.
Interconnection timeline
4–12 weeks
Application to Permission to Operate, utility side only.
Observed GridReady quote and bill review sample · verified Apr 2026
VDER / NYISO zones
K (Long Island)
Where the Value Stack applies instead of net metering.
Rates
Residential rate options
| Rate | Type | All-in | Fixed | What it does to storage |
|---|---|---|---|---|
| Rate 180 | Flat | $0.22–$0.29 | $17/mo | No arbitrage value |
| Rate 180 (Time-of-Day option) | Time-of-use | $0.13–$0.36 | $17/mo | Some arbitrage value |
Interconnection
What actually slows a project down here
- LIPA, not the Public Service Commission, sets the rules here. Net-metering terms, successor tariffs, and any customer contribution charge are decided separately from the six investor-owned utilities — so statewide guidance you read elsewhere may simply not apply.
- Long Island's wind-load requirements drive heavier racking and more attachment points than an upstate roof needs. That is a real line-item cost difference, not installer padding.
- The most saturated residential solar market in the state. Quote-to-quote price spread on identical hardware is the widest anywhere in New York.
Reliability
How the power fails in this territory
Day-to-day reliability is decent. The defining risk is coastal storms, where restoration has historically run into the week-plus range across large parts of the island.
This is the honest input to a backup-power decision. Buy against the failure mode you actually face, not against the one in the brochure.
Coverage
3 places we cover on PSEG-LI
Official sources
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How this page is built
This is a generated page: the structure is shared across locations, the numbers are not. Every figure comes from the source cited beside it, with the date we last checked it. Nothing here is a quote, an appraisal, or tax advice, and none of it is specific to your roof.
Rates and incentive programs change. We re-verify utility tariffs and NYSERDA program status on a rolling schedule and stamp the date on each number rather than on the page, so you can see which specific figures are fresh. Full methodology · Program status tracker · About the Local Energy Playbook
Page content last reviewed April 2026.