VOLTCALC Home battery storage
Use stored energy after sunset or during an outage with a compatible backup system.
BATTERIES · GENERATORS · BACKUP
Good nights. Even when the grid isn’t.
The fridge. The lights. A quiet evening at home. Let’s build a backup plan around what matters most to you.
YOUR HOME, IN BALANCEDAYTIME
Solar5.4 kW
Home1.8 kW
Charging3.5 kW
Sunshine powers your home and tops up your battery.
Surplus goes to the gridInteractive illustration
Flip the switch above to see your space in a different light.
A LITTLE EXPLORING GOES A LONG WAY
Your backup, your way.
Flip the day/night switch above, then change the settings to see the difference.
YOUR EXAMPLE HOME
5 kWh40 kWh
EssentialsBusy household
Example system includes solar, a battery, and compatible backup equipment.
READY WHEN YOU NEED IT
—hours of estimated battery support
Adjust the settings to explore your example home.
Solar to home1.8 kW
To the battery3.5 kW
To the grid0.1 kW
Illustrative, steady-state estimate. 10% battery reserve, 90% usable-energy factor, 5 kW discharge limit. Weather, equipment, starting charge, and actual loads change results. Not a system sizing quote.
THE RIGHT WORK, DONE WITH CARE
Here’s how we can help.
Essential-load backup
Prioritize refrigeration, lights, internet, and the circuits you choose.
Standby generators
Explore fuel-powered backup for your loads and outage expectations.
Transfer equipment
Keep backed-up circuits safely separated from the utility during an outage.
CONNECTED TO OUR COMMUNITY
Outside today. On the job tomorrow.
Local conditions and public permit activity, with the source behind every reading.
NEARBY WEATHER · NWSConnecting
—Getting the station reportBurbank airport · regional observation
40°F75°F110°F
How weather connects to electricity
Temperature can change heating and cooling loads. Clouds can change solar production.
These are weather observations, not electrical measurements.
Wind —Humidity —
National Weather Service forecast ↗CITY OF LOS ANGELES · LADBSConnecting
—Electrical permits issued
this month
A view of electrical work across the city—from new circuits to larger projects.
Citywide permit records—not VoltCalc jobs, not inspection completions. The city’s published data can lag behind actual activity.
View the city’s electrical permit dataset ↗Checking official weather alerts for Sunland…
Refreshes every 10 minutes while this page is open. The day/night switch changes the illustration; it never changes real weather readings.
FROM HELLO TO SWITCHED ON
A clear path forward.
Choose what stays on
We start with the appliances and circuits that matter to you.
Compare your options
Battery, generator, or a coordinated system that fits the site.
Make the handoff simple
Install, test, and walk you through how your backup operates.
GOOD QUESTIONS
A few things to know.
How long will a battery power my home?
It depends on usable battery capacity, starting charge, and which appliances are running. Try the battery demonstration to see how changing the load changes the estimated runtime. Your actual system needs a site-specific design.
Will solar keep my home on during an outage?
Ordinary grid-connected solar generally shuts down when the grid fails. Backup requires compatible equipment that safely isolates your home from the grid. We’ll help you plan solar, storage, and backup together.
Are the energy readings on this site real?
They’re interactive demonstrations, not readings from a real home. Day, night, cloud cover, and your settings change an illustrative energy model. They are here to explain how the equipment works together.
LET’S GET YOUR POWER SORTED
Tell us about your project What can we help you with?
One local crew. A clear plan. Work done with care.