Bidirectional Charging: Tesla vs. Enphase vs. FranklinWH — Which Battery is Best for Your Home?
The future of home energy isn’t just about storing solar power — it’s about using it in smarter ways. Bidirectional charging technology allows your solar battery not only to store energy but also to send power back to your home, your electric vehicle (EV), or even the grid.
At Ally Electric and Solar Inc. in Richmond, CA, we help homeowners choose the right system for true energy independence. Today, we’re comparing three leading solutions: Tesla Powerwall, Enphase IQ Battery, and FranklinWH aPower — with a special emphasis on their bidirectional charging capabilities.
What is Bidirectional Charging?
Traditional backup batteries are “one-way” — they store energy from solar panels and release it later.
Bidirectional charging, on the other hand, enables:
Vehicle-to-Home (V2H): Power your home directly from your EV battery.
Vehicle-to-Grid (V2G): Sell stored energy back to the grid during peak demand.
Home-to-Vehicle (H2V): Efficiently charge your EV using your home’s solar + battery system.
This creates a flexible energy ecosystem where your solar panels, backup battery, and EV work together.
Should I Get Bidirectional Charging Technology?
If you own an EV or plan to buy one soon, the answer is yes. Here’s why:
Resiliency: Your EV can act as a giant backup battery for your home, providing power during an outage.
Savings: Sell excess power back to the grid during peak hours (where utility programs allow).
Flexibility: Run your most important appliances during a blackout, even if your solar panels aren’t producing.
Future-Proofing: As California moves toward clean energy goals, bidirectional-ready homes will be more valuable.
For many Bay Area homeowners, bidirectional charging is quickly becoming a smart investment, not just a luxury.
Key Advantages of the FranklinWH System
While Tesla Powerwall and Enphase IQ are strong backup solutions, the FranklinWH system is a leader in bidirectional charging technology.
Its key advantages are:
10 kW peak output for reliable EV fast charging and running large appliances.
Seamless integration with various EV chargers.
Smart load management via the FranklinWH aGate, allowing you to prioritize power to critical circuits.
In short, the FranklinWH system doesn’t just store power — it gives you control, flexibility, and future readiness for the EV-driven home.
How Ally Electric and Solar Inc. Can Help
Bidirectional charging requires more than just a battery. You need a properly configured system that integrates your solar panels, backup battery, main service panel, and EV charger.
At Ally Electric and Solar Inc. (Richmond, CA), we provide:
Energy usage assessments to recommend the right solution.
Panel upgrades (100A → 200A) for safe integration of solar, batteries, and EV chargers.
Installations of Tesla, Enphase, and FranklinWH systems, tailored to your home.
Ongoing maintenance and support, so you’re never left in the dark.
Our mission is to help you take full advantage of bidirectional charging — powering your life today while preparing for the energy needs of tomorrow.