Winter in California’s Central Valley can be unpredictable, and recent storms have proven that all too well. Severe weather has brought heavy rain, high winds, and widespread power disruptions across the state, leaving tens of thousands of households without electricity during holiday and winter weather events.
Whether it’s heavy rainfall or sudden grid stress from storm impacts, power outages are becoming more common — and that means one thing for homeowners: it’s time to be prepared. In this guide, we’ll explain how solar with battery backup isn’t just about saving on your utility bill, but also about peace of mind when the lights go out.
Storm Season & Outages: A Growing Concern
Remember last month when the Central Valley did not see the sun for over 30 days? In recent winter storm events, major systems have swept across California, causing flooding, heavy winds, and extended power outages for thousands of residents.
It’s important to understand how solar and battery systems perform during winter conditions. Extended periods of limited sunlight can reduce solar production, meaning batteries may not recharge as quickly from solar alone. To address this, many systems can be programmed to draw power from the grid to keep batteries charged and ready for outages when solar production is low.
Winter energy planning is about choosing what matters most for the season. While batteries may be less effective for reducing peak energy costs during long stretches of cloudy weather, they remain a valuable tool for backup power and outage protection. When the grid goes down, stored energy can help keep essential systems running and provide peace of mind when it’s needed most.
Solar + Battery Backup: Your Winter Safety Net
If your home is equipped with a traditional grid-tied solar system, it’s likely not able to supply power during an outage without battery support — that’s a safety requirement of standard grid rules. This is where backup battery systems make all the difference.
A battery backup system stores excess solar energy produced during daylight hours and automatically powers your home when the grid goes down. With solar + battery backup, you can:
- Keep refrigerators running
- Power lights and internet during an outage
- Maintain essential heating systems
- Protect sensitive electronics
The technology detects outages instantly and provides power without noise or fumes — unlike gas generators — offering a quieter, cleaner alternative for winter preparedness.
Winter Solar Performance — Still Worth It
While winter often brings more cloud cover and shorter days, which can reduce solar production, California still enjoys ample sunlight even in the winter months. Solar continues to generate electricity, and paired with a battery backup system, that energy stays in your home when you need it most.
Central Valley solar owners in 2025 are also benefiting from a dramatic expansion of battery storage across the state, helping California meet peak energy demand and avoid rolling blackouts.
Peace of Mind & Energy Independence
The real value of solar + battery isn’t just in savings, it’s in energy independence and reliability. When storms hit and outages occur, you don’t have to wait around for utilities to restore power. Your home stays powered, your family stays safe, and your comfort isn’t compromised.
This readiness isn’t only for rare events; it’s scalable for everyday use. Batteries store excess clean energy for nighttime use, reducing reliance on peak-priced grid electricity year-round.
Added Value This Winter: Limited-Time Solar Incentives
Winter is also a great time to upgrade your system, thanks to current Sol-Tek Solar promotions, designed to maximize value and long-term performance:
- $1,000 OFF all solar thermal systems (LEARN MORE)
- Get (2) FREE solar panel cleanings with the purchase of any PV or PV + battery system. **Restrictions apply.** (LEARN MORE)
Clean panels mean better efficiency, especially important after rain, wind, and debris from winter storms. Solar thermal systems add even more savings by using renewable energy for hot water and pool heating year-round.
Get Ready Before the Next Storm Hits
Don’t wait for the next outage to think about backup power. Take advantage of winter incentives and start with a free solar assessment from the local experts.
👉 Schedule your free assessment today, or call our office at 559-206-0897.
Stay prepared. Stay powered. Stay independent — with Sol-Tek Solar.