New York Approves Meter Socket Adapter Pilot

Estimated reading time: 5 minutes · Last updated: 6 October 2026

The New York Public Service Commission has approved a statewide two-year pilot to test meter socket adapters (MSAs) for residential solar, EV charging and battery storage. MSAs plug into a home’s existing meter socket so inverters, batteries or chargers can connect without a main-panel upgrade; the PSC says utilities will accept MSA interconnection applications from 1 June 2027 and must report operational or safety findings after the pilot ends two years later. The proceeding began in Aug. 2024 with filings from ConnectDER and Tesla and later included Enphase Energy; the decision was, as first reported by pv magazine USA, met with support from the New York Solar Energy Industries Association.

applauds Governor Kathy Hochul and the New York State Public Service Commission for adopting a statewide program for meter socket adapters, an important step toward reducing the cost of residential solar and battery storage for New Yorkers.

New York Solar Energy Industries Association (NYSEIA)

How meter socket adapters change residential interconnection

Meter socket adapters are physical devices that plug into a home’s existing electric meter socket and provide terminals for downstream connections. By putting the inverter, battery or EV charger at the meter, an MSA lets installers bypass the main electrical panel; that elimination of a panel upgrade is the principal mechanism by which manufacturers say MSAs reduce upfront customer cost.

The PSC order frames the pilot specifically around installation complexity and cost savings and requires utilities to accept applications from a utility-approved list starting on 1 June 2027. ConnectDER, Tesla and Enphase Energy argued during the proceeding that MSAs could be tested, listed and deployed safely if the particular components held certification from a nationally recognized testing laboratory and installations complied with the National Electric Code.

Key technical and safety questions the pilot must resolve include protection coordination at the meter, labeling and visible isolation for first responders, and whether field practice or additional equipment will be required when MSAs are used instead of panel upgrades. These are the operational impacts the PSC has asked utilities to document during the two-year trial.

Where New York sits in a growing patchwork of approvals

The PSC order follows a string of state and utility actions on meter collar adapters and MSAs over the past year. In October 2025 the Delaware PSC proposed rules requiring Delmarva Power to approve meter collar adapters when the devices carry certification from a nationally recognized testing laboratory and are installed in accordance with the National Electric Code; those rules became permanent in April. Colorado moved via legislation when Governor Jared Polis signed 26-1007 in May 2026 and directed the Colorado Public Utilities Commission to update interconnection rules by 31 December 2026.

Enphase Energy reported in September 2026 that its IQ Meter Collar had gained approval for behind-the-meter installation from 80 different utilities across the United States and Canada. New York’s order required utilities in 2025 to file a statewide deployment proposal; the PSC pilot now creates a common start date and a reporting requirement that will let regulators compare outcomes across jurisdictions over a defined two-year window.

Implications for residential battery storage and installers

For battery storage specifically, MSAs could lower the cost and time required to add behind-the-meter batteries by removing main-panel upgrades from many installation scopes. Industry groups pushed this point: the New York Solar Energy Industries Association said it “applauds Governor Kathy Hochul and the New York State Public Service Commission for adopting a statewide program for meter socket adapters, an important step toward reducing the cost of residential solar and battery storage for New Yorkers.”

But adoption depends on the pilot’s operational findings. Utilities must track safety events, interoperability issues and any impacts on outage restoration and system telemetry; the PSC will require a post-pilot report covering such operational impacts and safety concerns two years after applications open. Installers will also need clarity on which devices appear on utility-approved lists and on testing or listing requirements imposed by labs and code-enforcement bodies.

Case for and against rapid uptake

The bottom line

The New York PSC pilot makes the state a major testbed for meter socket adapters and ties local practice to a growing set of state and utility actions around the United States. The key deliverable will be utilities’ post-pilot reports: they will show whether MSAs deliver the promised savings without operational or safety trade-offs. Installers, manufacturers and battery-storage advocates will watch the pilot start on 1 June 2027 and the Colorado PUC’s rule update due 31 December 2026 for signals about market scale and regulatory expectations.

What to watch

• Watch for the Colorado Public Utilities Commission to publish interconnection rule updates by 31 December 2026.
• Watch for New York utilities to accept MSA interconnection applications beginning 1 June 2027.