One homeowner with solar panels described upgrading their existing setup after adding a Tesla Model 3.
After upgrading their home batteries and pairing them with a 25-kilowatt bidirectional charger, the homeowner said that they could recharge their EV in just two hours. They took to Reddit's r/SolarDIY forum to share images and their story.
Here's what to know
The original poster said rising energy needs led them to add a BAT 9.0 module along with a 25kW NACS-compatible V2X bidirectional fast charger.
With that expansion, their storage capacity went from 18.1 kWh to 27 kWh, giving the household a bigger energy reserve and a much faster way to charge the EV than a typical setup.
The OP said they had been using a Sigen system for about six months before adding an EV to the household and increasing capacity with the BAT module.
The change shows how a home energy system can expand alongside new needs. In this case, the larger battery bank and charger cut charging time and built on the setup.
"Nice upgrade," one commenter wrote, while another added: "Wow, this is so cool. Did you really DIY this? What was your total install cost?"
The OP responded, writing: "To be honest, we just purchased the equipment and hired a local electrician team to set up the system. Equipment is around $15k, the installation service is around $10k. Not cheap, but it's good for a family that has two EVs."
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What can be done?
For households that already have home storage, the post shows that adding an EV may not require starting from scratch. It also points to the value of matching hardware to use. The homeowner tied the upgrade to the arrival of the Model 3, and the charging time shows how storage and equipment can upgrade daily driving routines.
If you're exploring a similar setup, EasyHome's free tools can help you compare solar options from vetted installers in your area. EasyHome can also help you explore backup battery storage, and pairing solar with a battery can help you maximize savings and power your home with solar when the grid goes down.
Where can I learn more?
For a closer look at EV charging, batteries, and solar, these stories show how Tesla systems work.
• Tesla owners can now charge their EVs with excess solar energy stored in a Powerwall.
• One homeowner's Tesla Solar Roof earned $350 each month in grid revenue.
• Tesla is exploring wireless charging technology to reshape how EVs power up.
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