IslandDER^TM METER  SOCKET ADAPTER (MSA)

WHOLE-HOME ISLANDING INSTALLED IN 15 MINUTES

Meet IslandDER^TM: Our next-generation meter socket adapter with a built-in Microgrid Interconnect Device (MID) and Consumption Current Transformers (CTs) for easier, faster “islanding” capability during partial and whole-home backup installs. Functionally designed and rigorously tested to accelerate installs—IslandDER™ helps you get in, get out, and get paid.

$839 MSRP

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One Meter Collar, Works With Multiple Battery Systems

Will be compatible with 22 battery brands and growing

IslandDER^™: A Better Way To Backup

Your 15-minute MID cheat code

Plug-And-Play Islanding

Installs at the meter, no need for complex electrical work.

Compatible Across Batteries

Carry fewer parts and de-risk your business from vendor lock-ins.

Standardized Solution

Smoother inspections and fewer surprises.

More Profitable

Speed up installs, decrease labor costs, and get to PTO faster.

FEATURES

15-minute install with MID integration for home backup and isolation
Manual MID override switch (under tool-access cover) to provide fail-safe re-close function (preventing extended outages) if 3rd party equipment fails
Built-in CTs negate the need for separate CT installation
Compatible with multiple battery energy storage systems—no OEM ecosystem locks
Pluggable and reversible connection for real-time access to whole-house current and voltage data
Supports emerging use cases like backup via stationary storage or vehicle-to-home (V2H), TOU load shifting and energy arbitrage, self-consumption, and more
Works in virtually every residential U.S. meter—ideal for difficult-to-access meter main combos
200 amps continuous current via passive cooling—no fan that is susceptible to repairs
NRTL listed to UL 414 for use with UL 1741/3141 systems
Toolless removal allows easy meter socket inspection
12.5 year warranty

TECH SPECS / INSTALLATION

Enclosure Rating: NEMA 3R
Thermal Management: Passive Cooling, Heat Sinks
Compatibility: Ring-type or ringless / Lever and horn bypass / 4-jaw (2S) or 5-jaw (12S)
Ratings: Voltage 208V, 240V / Max Current 200A / Short Circuit 22k AI (independent of any external load side overcurrent devices)
Safety: UL 414 SA, SB, SC meter sockets / UL 1741, 3141, 9741 system ready
Download IslandDER full technical specifications → 

Download IslandDER installation manual →

FAQs

What is IslandDER™ and what does it do?
IslandDER™ is a Meter Socket Adapter (MSA) that functions as a Microgrid Interconnect Device (MID). It safely disconnects a home from the grid during an outage, allowing residential energy systems like solar, batteries, and V2H/V2G to create a “microgrid” and provide backup power.

How does IslandDER™ benefit installers?
IslandDER™ helps installers by providing a cost-effective way to enable whole-house and partial backup. It avoids the common issues of installing MIDs and whole-house consumption sensors (CTs) in meter-main combination panels (common in the Western and Southern U.S.), as well as negating complex electrical work often required with circuit relocation (“Hawaiian tie-ins”) or main panel upgrades.. It also offers compatibility with many third-party battery systems, giving customers more equipment choices.

What is a meter-main combo panel and why is IslandDER™ so valuable when used with them?
Meter-main combination panels are common in many parts of the U.S. and combine the meter socket and breaker box into a single enclosure. The enclosure is partitioned into two halves—the utility/metering side and the customer service panel side. This configuration makes the electrical connection between the meter and the main service disconnect inaccessible, creating a challenge for integrating energy storage components like MIDs and CTs. Traditionally, this required a costly service replacement or complex circuit relocation. The design of IslandDER™ and its location allow you to bypass these challenges entirely.

Does IslandDER™ require a neutral wire between it and the meter socket?
No. Since IslandDER™ does not include a DER power connection, a neutral (grounded) conductor is not required. However, neutral lug options are provided on the back of the MSA that allow for a meter form conversion in some unique circumstances. Refer to the installation manual for more information.

Does IslandDER™ support partial-home backup in addition to whole-house backup?
Yes. IslandDER™ can be configured for either whole-house or partial-home backup. When installed in the main meter socket with the utility billing meter, it provides whole-house backup, typically using third-party load control to manage power. For partial backup, it can be installed in a second customer-owned meter socket between the main panel and a backup loads panel. Refer to the installation manual for more information.