How much does a solar + EV + battery setup cost in San Diego?

Rough ranges: Solar system $15,000–$25,000 (before incentives), Tesla Powerwall ~$12,000 installed, EV $35,000–$65,000 (before credits). Federal ITC covers 30% of solar+battery costs. The full setup is expensive but offsets ongoing fuel and utility costs substantially.

Future Economy · Energy + EV

Your EV Is Not Just a Car

Q: Can an EV power my house during a blackout?

Some EVs now support Vehicle-to-Home (V2H) or Vehicle-to-Grid (V2G). The Ford F-150 Lightning and certain Nissan Leaf models can export power. Most EVs currently can't, but this capability is expanding rapidly. A dedicated home battery (Powerwall) is the more common setup today.

Q: Is charging at home cheaper than a gas station?

Yes, significantly. With SDG&E's EV2-A time-of-use plan, overnight charging rates can drop to $0.09–0.14/kWh. At average EV efficiency (3–4 miles/kWh), that's equivalent to roughly $0.75–1.20 per gallon of gas.

An electric vehicle combined with solar panels and a home battery turns your house into an energy node — one that generates, stores, and uses power independently of the grid. Here's what the full setup looks like and whether it makes sense for your San Diego home.

The Home Energy System Flow

☀️ Solar
Generates power

→

🔋 Battery
Stores excess

→

🏠 Home
Uses power

→

🚗 EV
Charges overnight

When everything is optimized, you charge your car on yesterday's sunlight. Your utility bill shrinks dramatically. And during outages, your home keeps running.

The Three Components

☀️

Solar Array

Roof panels generate DC electricity from sunlight. San Diego averages 266 sunny days/year — top tier for solar ROI. Most homes need 6–12 panels for a full setup.

🔋

Battery Storage

Tesla Powerwall, Enphase Encharge, LG RESU. Stores excess solar for nighttime use and outage backup. Typically 10–20kWh capacity per unit.

🚗

Electric Vehicle

Consumes stored solar. Some newer EVs (F-150 Lightning, Nissan Leaf with CHAdeMO) can also export power back to the home or grid (V2H / V2G).

Estimated Costs and Incentives (San Diego, 2025)

Component	Rough Cost	Incentives Available
Solar system (6kW)	$16,000–$22,000	30% Federal ITC, NEM 3.0 export credit
Tesla Powerwall 3	$11,500–$14,000 installed	30% Federal ITC (if paired with solar)
EV (e.g. Model 3)	$40,000–$55,000	$7,500 federal credit, $2,000 CVRP rebate
Total (before credits)	~$70,000–$90,000
After incentives	~$52,000–$72,000	Payback: 8–12 years on combined savings

Vehicle-to-Home (V2H) — The Next Level

A handful of EVs can now export power from their battery pack back into your home during grid outages. Think of it as a 100kWh backup generator on wheels. Currently supported vehicles include the Ford F-150 Lightning (up to 9.6kW export), Nissan Leaf with CHAdeMO adapter, and Hyundai Ioniq 5/6.

This is still early-stage technology in the US market, but it's advancing rapidly. Most people today use a dedicated home battery for backup and their EV purely for driving — that's the more practical and supported setup right now.

Frequently Asked Questions

Can an EV power my house during a blackout?

Some can — Ford F-150 Lightning and Nissan Leaf with CHAdeMO support V2H. Most EVs can't do this today. A dedicated Powerwall paired with solar is the more reliable whole-home backup option currently.

Is charging at home cheaper than a gas station?

Significantly. SDG&E's EV2-A time-of-use plan offers off-peak rates around $0.09–0.14/kWh. At 3.5 miles/kWh, that's equivalent to paying about $0.80 per "gallon" — vs $5+ for actual gas in San Diego.

Does NEM 3.0 hurt solar economics in San Diego?

NEM 3.0 (April 2023) reduced export credits from the grid, which made stand-alone solar less attractive. But solar + battery still strongly pencils out — you consume more of what you generate and avoid high peak-hour rates from SDG&E.

Should I get solar before or after buying an EV?

Either order works, but many homeowners find it easier to install solar first to understand their usage, then add the EV. If you're buying an EV now, let the installer size the system to include expected EV charging load.

Questions About Setting Up Home Energy in San Diego?

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