A little over one year ago I turned on my solar panels at my house. Now that a full year of use has passed, I can assess their effectiveness. My goal was to generate from solar 100% of the electricity I use. I didn’t quite make it – I generated 96% of the electricity my house consumed. But that included charging my electric car for the year, which means I was driving on sunshine.
If you are anything like me, you want to geek out on all the numbers. So here they are.
- I have 30 panels, 320 W each, for a total capacity of 9.6 kW (LG320 NeON2 MonoX Plus panels)
- Installed cost: $28,000
- Austin Energy Rebate: $7,500
- Federal tax credit: $6,100 (30 percent of the cost of the system)
- Net cost: $14,400
Energy Usage and Generation for Year One
- Consumed: 13.59 MW-h
- Generated: 12.75 MW-h
- Net Consumption: 540 kW-h
Electric Car Energy Consumption
- Nissan Leaf Miles Driven: ~8,000/year
- Mileage: 3.3 miles/kW-h
- Approximate energy consumption: ~2,400 kW-h/year (about 18% of my total house consumption)