- Expensive labor and materials from time-consuming electrical work
- Inconsistent MID options mean custom installs and error risk
- Lack of space in meter-main combos to clamp CTs
- Home repairs delay project completion
- Other meter collars lock you into their battery system
- Other meter collars have disqualifying features and failure-prone parts
- Meter collars not approved by the utility
- $839 MSRP
- Battery Backup
IslandDER™ Meter Socket Adapter (MSA)
Installing now with all partners except SolarEdge, coming soon with the launch of their new Nexis system. For more information, visit our Approved Partners List (APL).
Easier, Faster, More Profitable Battery Installs
Skip the panel upgrades, circuit relocations, and system controllers.
- 4-8 HoursAVG TIME SAVINGS
- 2 Installs/DayINCREASED VOLUME
- $2500-$5000AVG COST REDUCTION
12.5-Year Warranty12.5-Year Warranty12.5-Year Warranty12.5-Year Warranty12.5-Year Warranty12.5-Year Warranty
Your Biggest Battery Backup Problems, Solved
Simpler installs. Fewer headaches. Lower costs.
- 15-minute install behind the utility meter: No complex electrical work or extra system components
- Built-in MID and fool-proof installation
- Built-in consumption CTs save you hours
- No interior panel work, drywall damage, or painting required
- Compatible with multiple leading battery brands
- Field-friendly product design, no internal moving parts, fewer service calls and truck rolls
- Utility approval not needed when installed in a standalone, customer-owned socket
ISLANDDER™ VS.
Save Hours To Days Per Job, Complete More Installs
Make every home backup job a repeatable process—not a custom project.
| IslandDER™ | System Controllers | Circuit Relocation | MPU / Service Upsizing | |
|---|---|---|---|---|
| Single-Line Diagrams | Simple, Repeatable | Complex, Custom | Complex, Custom | Complex, Custom |
| MID & CTs | Built-In | Built-In or Separate | Separate | Separate |
| Install Time | 15-30 Minutes | 3-6 Hours | 1-2 Days | 2-3 Days |
| Panel Work | None-Minimal | Moderate | Substantial | Substantial |
| Home Repairs | None | Walls & Painting | Walls & Painting | Walls & Painting |
| Battery Choice | FranklinWH SolarEdge Lunar Energy EcoFlow Fox ESS | Locked Into Battery System | Broad | Broad |
| Meter Socket Types* | Ring/Ringless 2S/12S Lever/Horn Bypass Meter Main/Standalone | N/A | N/A | N/A |
| Single Sockets & Meter-Main Combos | Easy | Labor Intensive | Labor Intensive | Labor Intensive |
| Safety Risk | Low | Moderate | Moderate | Moderate |
*Utility and AHJ requirements may apply to meter socket compatibility
NO CIRCUIT RELOCATIONS
Meter-Mains Made Easy
Avoid load relocations, indoor circuit work, clamping CTs, and playing general contractor with repairs.
INDUSTRY-LEADING
Not Like Other Meter Collars
DQs, hardware issues, and poor customer service—that ain’t us.
-
Field-Friendly Design
Elegant and compact, viable on more projects than the other guys.
-
Socket Compatibility
Use it on any type of residential socket, on every job.
-
Expert Support
Our battery partners are trained for rapid, single-point-of-contact resolution in the field.
A Standardized MID Solution, Adopted By Leading Battery Makers
IslandDER™ integrates with multiple battery brands—so you can choose the system that’s best for you, and your customers.
- INSTALLING NOW
- FranklinWH aPower2 or aPowerS
- FranklinWH MAC (Meter Adapter Controller)
- ConnectDER IslandDER™
- OPTIONAL: FranklinWH aHub
- INSTALLING NOW
- Lunar Battery
- Lunar Meter Socket Adapter Controller (MSAC)
- ConnectDER IslandDER™
- COMING 2026
- EcoFlow OCEAN Pro
- EcoFlow OCEAN Meter Backup Switch
- ConnectDER IslandDER™
- COMING 2026
- Fox ESS PowerQ Series Battery
- Fox ESS Meter Adapter Box
- ConnectDER IslandDER™
- COMING 2026
- SolarEdge Nexis Battery
- SolarEdge Nexis IslandDER™
- Cat5 Ethernet Cable (Digital Communication)
The SolarEdge Nexis IslandDER™ model swaps the analog cable with an ethernet and does not require a MSA Controller.
DON'T FALL BEHIND
Your Competitors Install With IslandDER™
Improve operational efficiency, boost your bottom line.
Brad Ingram | Director of Hardware Engineering - SunrunIslandDER by ConnectDER allows us quicker and cleaner installations, and we're excited to continue expanding its use in many of our markets.
Pey Shadzi | COO - Cosmic Solar & RoofingIn the past we’ve had to move breakers and circuits, put them into a subpanel—a lot of labor, materials, time, and permitting that can add $5,000-$6,000 to a project. With IslandDER, you can leave all your loads in your main service panel.
Michael Ward | Vice President - Pacific SolarIslandDER lets us deliver a comprehensive whole-home backup solution with 50% less installation time and over 50% cost savings. The need to install CTs in tight electrical panels has been eliminated, streamlining the installation process even further.
Jake Bastien | CEO - Icon PowerMeter socket adapters are paving the way for the future of Virtual Power Plants and energy storage. By helping to reduce costs, we're excited to see more of these innovative solutions like IslandDER becoming available in the market.
Catt Roose | VP, Operations - Haven EnergyRetrofits are usually slowed down by panel upgrades, high labor costs, and long permitting timelines. With IslandDER, we bypass costly electrical work, cut install time, and reduce disruption for homeowners. Solar-plus-storage retrofits are faster, cheaper, and far more scalable.
Robert Bressler | Chief Operating Officer - BVI SolarReduces timelines and minimizes the risk of installer error. You can provide whole-home backup for a fraction of the price of a dedicated load center that only provides minimal circuit backup. I would not do a solar and battery installation in today's market without a ConnectDER MSA.
“Eliminates the need to enter a home and greatly reduces the amount of electrical work required.”
“Cut costs and simplify logistics on home solar plus storage installations.”
“Provides critical islanding capability... can save thousands of dollars on a home battery installation.”
RETROFITS
Your Competitive Advantage For The Growing Battery Retrofit Market
IslandDER™ works with whatever panels and inverters are already on the home.
- M+Solar installations in the U.S.
- %*Without a battery attached
- ~# of states with battery attachment incentives
- *Percentage reflects installs in 2023 only, according to SEIA
INSTALLATION
Install Methods By Market
Install IslandDER™ nationwide with two easy methods.
INSTALL NATIONWIDE
Install Everywhere
Get the benefits of IslandDER™ despite market-differentiated utility requirements.
- UTILITY-APPROVED TERRITORIES
Behind The Utility Meter
Depending on the utility's rules, you may either be allowed to install IslandDER™ yourself without utility coordination or it must be done by a utility technician.
- NATIONWIDE
Separate Standalone Socket
Where utilities have not approved meter collars, you can install IslandDER™ in a separate standalone, customer-owned socket often without utility involvement. You may still need to coordinate with the utility for other aspects of the install. Reach out to learn more.
CONFIDENCE BUILT-IN
Superior Engineering For Safety, Reliability & Peace-Of-Mind Performance
Passive Cooling
Patented passive thermal management mechanism via heat sink technology instead of a failure-prone fan.
Black Start Re-Energization
Redundant power supply ensures the battery maintains power after a grid outage, no service call needed.
MID Override Interlock
Electrical interlock automatically sends cease export signal to the battery when manual MID override cover is removed.
NEMA 3.0 Enclosure Rating
Durability and reliable performance under the most extreme weather.
SINGLE SOCKET OR METER-MAINS
Design Once, Deploy Everywhere
Repeatable diagrams. Easier schematics. Happier designers.
The SolarEdge Nexis IslandDER™ model swaps the analog cable with an ethernet for digital communication, and does not require a MSA Controller.
Tech specs
IslandDER™ Tech Specs
Mechanical Specifications
| Enclosure Rating | NEMA 3R |
|---|---|
| Enclosure Type | Injection molded polycarbonate, UL 94 5VA flame rating |
| Optional Neutral Connection | Wired to meter socket or 5th stab options |
| Thermal Management | Passive cooling, heat sinks |
| Dimensions (W x H x D) | 6.7” x 7.8” x 4.9” (with pluggable Connection Module) |
| Weight | 5.55 lbs. / 2.52 kg (with Connection Module and 6 ft analog cable) |
| Shipping Weight | 7.75 lbs (3.51 kg) |
| Mounting System | Blade interface with 4-jaw or 5-jaw meter socket |
| Electric Meter Compatibility | Type 2S, 12S |
| Meter Socket Compatibility | Ringless, Ring-type, Lever, Horn Bypass |
| Manual Mid Override | Externally accessible switch, protected by (dry contact) interlocked tool-access cover |
Communications
| Type | Discrete sensing, control, status, and 12V power signals |
|---|---|
| Cable | Pre-assembled, multi-conductor, outdoor/UV rated |
| Connection | Factory-wired pluggable connection: Weathertight, reversible at top of MSA, pre-attached connector to 3rd party equipment |
| Power | 12V DC bus to/from 3rd party system, Max 5W power supply available to 3rd party system from grid side of MID (load side of meter) |
| Current Sensing | ANSI 0.2 accuracy class CTs for revenue grade sensing, additional line and load side (of MID) Rogowski coils at < 5% accuracy |
| Voltage Sensing | Line and load side (of MID) - 0.4% accuracy at ambient, 1% across temperature range |
| MID Control | Discrete open/close signals with 1ms input noise rejection, Actuation time < 15 ms |
| MSA Status | Discrete signals for MID open/close status, manual MID override interlock, MID ready, grid power present, MSA fault |
| Internal Temperature Sensing | -58°F to 302°F (-50°C to 150°C) |
Ratings
| Voltage | 208V, 240V |
|---|---|
| Max Continuous Current | 200A |
| Short Circuit Rating | 22k AIC (rating independent of any external load side overcurrent devices) |
| MID Rated Cycles | 10,000 |
| Applicable Safety Standard | UL 414 SA, SB, SC – meter sockets, UL 1741 / 3141 / 9741 system ready |
| Emissions | FCC CFR Part 15 Class B, ANSI C12 / IEC 61000 |
| ETL | ETL file # 5028888 |
| Ambient Air Operating Temperature Range | -22°F to 149°F (-30°C to 65°C) |
| Ambient Air Storage Temperature Range | -40°F to 176°F (-40°C to 80°C) |
FAQs
IslandDER™ Frequently Asked Questions
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.
DISTRIBUTION PARTNERS
Conveniently Sold Where You Already Shop
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