For homeowners comparing batteries or planning backup power, get a capacity estimate based on your daily use and the appliances you need during an outage. Compare battery sizes, solar charging patterns, and time-of-use schedules using numbers you type in. Leave with a battery sizing table, a backup-load list, and a set of questions to take to an installer.
Solar Storage
Plan home battery capacity, backup circuits, and solar-storage schedules around your power use.
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What it writes
- Battery capacity estimate in kWh
- Backup appliance and load list
- Solar charging and rate comparison
How to use it
Include daily kWh use, solar array size, battery model if known, and the exact appliances you want powered during an outage. Add outage duration or utility rate periods for a more useful estimate.
What you bring
- Daily electricity use in kWh
- Appliances needed during outages
- Solar array size and utility rates
- Know which circuits need backup power
A good fit for
- Choosing a battery size for a home with 30 kWh daily use
- Planning backup power for a fridge, well pump, and lights
- Comparing battery charging against evening peak electricity rates
Ways to start
A few requests this Agent can handle.
My home uses about 28 kWh per day, and I want 12 hours of backup for the fridge, lights, and internet. Estimate a battery size.
I have a 7 kW solar array and a 10 kWh battery. How much daytime surplus might charge the battery in summer?
My utility charges 8 cents per kWh overnight and 32 cents from 4 to 9 p.m. Compare charging a 13.5 kWh battery overnight versus solar.
Good to know
This workspace provides text assistance.
- Electrical installation or permitting decisions; consult a licensed installer
- Cannot inspect your roof, utility bill, inverter, or equipment
- Cannot confirm local utility rates or installation code requirements
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Use it as a draft to review and adapt. Verify calculations, facts, rights, and suitability before relying on it. Do not provide information you do not have permission to share.
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