FranklinWH Whole-Home Battery Backup & Energy Management

Yes, seamlessly. Because FranklinWH is an AC-coupled battery storage system and can be compatible with all the inverters, it connects downstream at the AC level via the aGate. This allows it to work with virtually any existing solar setup—including Hoymiles microinverter, Enphase IQ7/SolarEdge systems or newer Enphase IQ8 microinverters, and any grid-tie string inverters without needing to modify or replace your current solar inverter architecture.

The FranklinWH aPower2 + aGate solution is design for AC-coupled installation and can work with any thirty-part inverter ( string inverter or microinverter ) which makes them a common fit for solar retrofit projects where a homeowner wants to add battery backup to an existing solar system.

Yes, FranklinWH is AC-coupled designed storage that can be added to any existing solar system for solar retrofit without replacing every part of the original solar array.

FranklinWH aPower2 solution is design for AC-coupled application, it is ideal for retrofit projects (adding a battery to an existing solar system) and superior choice. The Tesla Powerwall3 features a built-in DC string inverter, making it ideal for new solar installations. However, for a retrofit application scenatios, adding a Powerwall3 can complicate the existing inverter setup. FranklinWH’s AC-coupled design handles third-party equipment and load management more flexibly without disrupting your pre-existing solar investment.

No, it should not. As long as you are only adding storage (an AC-coupled battery) and not increasing the generation capacity (the DC wattage/size) of your solar panel system beyond the utility's allowed threshold, your grandfathered NEM 2.0 status with utilities like PG&E, SCE, or SDG&E remains safe.

Yes, you can. This is one of FranklinWH's standout features compared to many other backup storage solutions. The aGate is equipped with dedicated, smart interface ports designed specifically to integrate and manage traditional standby standby generators, enabling them to safely charge the batteries when solar production is low during a prolonged grid failure. Alternatively, you may choose to use the module to access your EV battery as an additional home power source to extend your home's backup duration.

Yes. The FranklinWH home energy management and battery storage system provides solution for your whole home backup whether grid-tied or not.

Yes, complete local control is available when there is no cloud access. You can access the system via the built-in aGate X Wifi hotspot.

In US market, typical out-of-the-door (OTD) pricing for a standalone baseline installation (1x aPower2 battery + 1x aGate smart energy manager, including local permitting, engineering, and labor) generally ranges between $14,000 and $18,000. Turnkey project prices may vary depending on your local utility main panel upgrade (MPU) requirements and regional labor rates. You can order equipments from Self2solar, then hire a local certified installer to help you setup your system.

FranklinWH is millisecond-level back-up switch and does feature an ultra-fast. However, if a blackout is preceded by "dirty power" (voltage brownouts or frequency fluctuations), the aGate may intentionally wait 10–15 seconds to isolate your home safely until the grid fully dies. This built-in protection mechanism prevents erratic grid behavior from damaging your sensitive electronics. For mission-critical IT equipment, a small desktop UPS is still recommended.

Yes. The FranklinWH system supports a feature called Black Start. Even if the aPower2 batteries are completely depleted and the system shuts down overnight, the aGate will automatically wake itself up the next morning using the initial power generated by your solar panels, restarting the charging cycle without requiring manual user intervention.

It depends the total active power of backup loads, which decides the maximum sustainability of the FHP system in backup mode. The longest backup time required to analyze the total active power of the home backup loads. For example, if the total active power of all backup loads is 3kW, then the maximum sustainable backup time for the household is 13.6kWh/3kW≈4.5h when the only aPower2 is a single source to fully charged (SOC=100%).

The FranklinWH app can't set maximum charge capacity and the system will always utilize available solar power to charge the battery to 100%. However, you can adjust the Backup Reserve percentage, normally you can keep 10~20% capacity exclusively for emergency blackouts.

Yes, it is seamless. The FranklinWH battery design for AC-coupled and compatible with all inverters, including Enphase, Hoymiles, SolarEdge, Growatt, Solis and SMA. If you already have a PV-only system in your home, you can hook FranklinWH batteries directly to your PV system.

Backup loads: These loads need to be ready and available 24 hours a day and need to be available during the grid power outage periods. Non-backup loads: These loads are non-essential devices which will not adversely affect the life quality if they stop working during the power outage period. You can use FranklinWH aGate smart circuits to control the Non-backup loads.

Yes, the FranklinWH aPowers + aGate solution can store grid energy and generator power, which can power your home when outage happens or during peak rate hours and extreme climate.

California's Self-Generation Incentive Program (SGIP) offers storage rebates that can reach up to about $1,000 per kWh under the Equity and Equity Resiliency tiers. Standard residential (General Market) rebates are lower and step down over time. Eligibility depends on your utility, income qualification, and whether you are in a Tier 2/3 high fire-threat district or have medical-baseline needs.

The original aPower offers 13.6 kWh storage, 5 kW continuous / 10 kW surge output, and a 12-year warranty. The newer aPower 2 roughly doubles output to 10 kW continuous, provides 15 kWh usable capacity, and carries a 15-year warranty (10,000+ cycles or 60 MWh throughput). Both use safe LFP (lithium iron phosphate) chemistry.

Since the aGate ties into your main panel, an electrical permit from your local building authority is generally required. If you are only adding storage (not new solar capacity), your utility often does not need to re-approve the system, though rules vary by utility. Your certified installer typically handles permitting and any required interconnection paperwork.

Most average homes need 1–2 aPower units for everyday backup. A typical whole-home backup needs 2 aPower2( 30kWh).It addresses 30 kWh during longer outages. Your exact count depends on daily usage, the power that backup loads and non-backup required , and whether you have solar or generator to recharge.