Solar+Battery Power

Grid Threat Video

Modern Gen-3 Battery  Inverters can now operate with or without batteries.  The solar energy is available even when utility power is out.   Adding batteries enables nighttime power and exact control of when energy is backfed to the utility.  Full solar power is still available when your utility power is out!

Can your family afford to be victim to such uncontrollable grid dependencies?  A battery-based solar system can provide the critical power to preserve your food security and drinking water during a grid emergency.

Now that major utilities have the practice of shutting the grid off preemptively, you could be in the dark for days without notice.  If it is time for a change, here is an powerful solution.

“Always On”, Solar with Battery

Fridge Power         Cell Phone Charging           Well Water Pump

Battery Backup Power for Critical Loads


The rapid expansion of battery technology is opening new possibilities for long-life and reliable battery power in your solar solution

  • Add battery backup to your home system
  • Use battery power when utility rates are high during peak TOU windows
  • Create  “critical load circuits” to ensure refrigerator and well pumping during emergencies.
  • Add off-grid power for remote sites for animal watering
Carport for off grid solar system



Off grid systems can now support entire house power requirements. Modern battery banks, coupled with powerful power inverters and reliable solar modules provide years of trouble free power.  Backup generators can be used to augment solar production and boost battery charge when needed.





New Lithium Battery Tower

Modern battery banks are assembled from long life lithium batteries, which require no periodic maintenance. The life expectancy is 15 years under normal use. Battery racks come with built in circuit breakers and display panel to show voltage and charge level.   SunnyCal Solar can pre-assemble battery-based systems at our facility, and deliver to your site for same-day setup.



Choices abound for selecting the best battery for your solution.


Variety of battery choices




Traditional flooded  lead-acid batteries

Sealed AGM lead acid battery

Lithium batteries of the lated LiFePo chemistry

Monster 48V lead-acid battery bank in steel casing



Lithium Batteries with Inverter/Charger



How Much Power Will You Need For Your Battery System?

If you want to start from scratch and size based on the appliances you use,

Solar Power Calculation website logo

go to our size calculator at:

Size the inverter based on your peak load

Use PowerCalc tool to determine your battery size

Size solar so the battery is recharged every day