Battery Storage
Backup power and peak-rate savings for Ventura County.
Sespe Power Solutions installs Tesla Powerwall, Enphase IQ Battery 5P, LG, and Panasonic battery systems across Ventura County. We're a Tesla Certified Installer and Enphase Platinum Installer, and we file SGIP rebate paperwork — which can be worth $150–$1,000 per kWh of installed capacity for homeowners in Ventura County's High Fire Threat Districts.
- Backup power during outages, automatic switchover
- Time-of-use savings by avoiding peak rates
- Storm Watch mode pre-charges before severe weather
- Stackable — add capacity over time
Pair a battery with new or existing solar to keep the lights on during outages and dodge expensive peak-rate windows. We install Tesla Powerwall, Enphase IQ Battery, LG, and Panasonic systems.
What's included
- Load study and battery sizing for your home
- Permit and utility interconnection paperwork
- Battery, gateway, and critical-load panel installation
- Solar integration if you have or plan an array
- App-based monitoring and time-of-use programming
- Manufacturer warranty registration
Frequently asked questions
How much does a Tesla Powerwall 3 cost installed in Ventura County?+
$13,500–$16,500 installed in 2026, or $9,450–$11,550 after the 30% federal tax credit when paired with new solar.
Am I eligible for SGIP rebates?+
Most likely yes if you live in a High Fire Threat District (HFTD) — much of Ojai, Santa Paula, and the Thousand Oaks/Newbury Park foothills qualify. SGIP pays $150–$1,000 per kWh of installed battery capacity. We file the paperwork.
How many batteries do I need for whole-home backup?+
A typical 1,800–3,000 sq ft home with central AC and one EV needs either one Tesla Powerwall 3 or three Enphase IQ Battery 5P units (~15 kWh total).
Can I add a battery to my existing solar without losing NEM 2.0?+
Yes — as long as you don't increase your solar size by more than 1 kW or 10% (whichever is greater), you keep your NEM 2.0 grandfathering for the remainder of your 20-year period.
How fast does the battery kick in during an outage?+
Under 100 milliseconds for both Powerwall and Enphase. You won't see a flicker.
What's the warranty?+
Tesla Powerwall 3: 10 years, unlimited cycles, 70% capacity at year 10. Enphase IQ Battery 5P: 15 years, 60% capacity at year 15. Sespe adds a 10-year workmanship warranty on the install itself.
Let's see what the sun can do for your home or business.
Solar, battery, EV chargers, panel upgrades, commercial work — we'll do the math, design the system, and tell you straight what makes sense. No high-pressure pitch.