| Current annual electricity usage | kWh / yr. | |
| Solar hours per day | hrs. per day | |
| % of elec. bill to offset with solar | % | |
| Solar array size estimate | 5 | kW |
| Your South-facing roof (or yard) area | ft² | |
| Watt rating of panels | W | |
| # of panels needed | 24 | panels |
| area of panels (height x width) | ft² | |
| Required area | 352 | ft² |
| You have sufficient space for your solar panel system! ☀️ | ||
| Current daily electric usage | 25 | kWh/day |
| LiFePO4 battery voltage | V | |
| Battery size needed | 2084 | Ah |
| Note: 2x above amount for Lead Acid battery. | ||
| Most LiFePO4 batteries range from 100 - 400 Ah. | ||