Residential Solar Calculator
Electricity Variables
Current Annual Electricity Bill
$400/year ($33/month)
$450/year ($38/month)
$500/year ($42/month)
$550/year ($46/month)
$600/year ($50/month)
$650/year ($54/month)
$700/year ($58/month)
$750/year ($63/month)
$800/year ($67/month)
$850/year ($71/month)
$900/year ($75/month)
$950/year ($79/month)
$1,000/year ($83/month)
$1,100/year ($92/month)
$1,200/year ($100/month)
$1,300/year ($108/month)
$1,400/year ($117/month)
$1,500/year ($125/month)
$1,600/year ($133/month)
$1,700/year ($142/month)
$1,800/year ($150/month)
$1,900/year ($158/month)
$2,000/year ($167/month)
$2,100/year ($175/month)
$2,200/year ($183/month)
$2,300/year ($192/month)
$2,400/year ($200/month)
$2,500/year ($208/month)
$2,600/year ($217/month)
$2,700/year ($225/month)
$2,800/year ($233/month)
$2,900/year ($242/month)
$3,000/year ($250/month)
$3,100/year ($258/month)
$3,200/year ($267/month)
$3,300/year ($275/month)
$3,400/year ($283/month)
$3,500/year ($292/month)
$3,600/year ($300/month)
$3,700/year ($308/month)
$3,800/year ($317/month)
$3,900/year ($325/month)
$4,000/year ($333/month)
$4,100/year ($342/month)
$4,200/year ($350/month)
$4,300/year ($358/month)
$4,400/year ($367/month)
$4,500/year ($375/month)
$4,600/year ($383/month)
$4,700/year ($392/month)
$4,800/year ($400/month)
$4,900/year ($408/month)
$5,000/year ($417/month)
$5,100/year ($425/month)
$5,200/year ($433/month)
$5,300/year ($442/month)
$5,400/year ($450/month)
$5,500/year ($458/month)
$5,600/year ($467/month)
$5,700/year ($475/month)
$5,800/year ($483/month)
$5,900/year ($492/month)
$6,000/year ($500/month)
$6,100/year ($508/month)
$6,200/year ($517/month)
$6,300/year ($525/month)
$6,400/year ($533/month)
$6,500/year ($542/month)
$6,600/year ($550/month)
$6,700/year ($558/month)
$6,800/year ($567/month)
$6,900/year ($575/month)
$7,000/year ($583/month)
Desired Solar Power Production
120% of total consumption
115% of total consumption
110% of total consumption
105% of total consumption
100% of total consumption
95% of total consumption
90% of total consumption
85% of total consumption
80% of total consumption
75% of total consumption
70% of total consumption
65% of total consumption
60% of total consumption
55% of total consumption
50% of total consumption
45% of total consumption
40% of total consumption
35% of total consumption
30% of total consumption
25% of total consumption
20% of total consumption
15% of total consumption
10% of total consumption
5% of total consumption
Utility Provider Variables
Cost Per Kilowatt/Hour (kWh)
$0.04/kWh
$0.05/kWh
$0.06/kWh
$0.07/kWh
$0.08/kWh
$0.09/kWh
$0.10/kWh
$0.11/kWh
$0.12/kWh
$0.13/kWh
$0.14/kWh
$0.15/kWh
$0.16/kWh
$0.17/kWh
$0.18/kWh
$0.19/kWh
$0.20/kWh
Utility Electricity Price Inflation
3% per year
4% per year
5% per year
6% per year
7% per year
8% per year
9% per year
10% per year
Financial Variables
Loan Term
7 years
10 years
15 years
20 years
25 years
30 years
Loan Interest Rate
0.00%
0.25%
0.50%
0.75%
1.00%
1.25%
1.50%
1.75%
2.00%
2.25%
2.50%
2.75%
3.00%
3.25%
3.50%
3.75%
4.00%
4.25%
4.50%
4.75%
5.00%
5.25%
5.50%
5.75%
6.00%
6.25%
6.50%
6.75%
7.00%
7.25%
7.50%
7.75%
8.00%
8.25%
8.50%
8.75%
9.00%
9.25%
9.50%
9.75%
10.00%
10.25%
10.50%
10.75%
11.00%
11.25%
11.50%
11.75%
12.00%
Down Payment
0%
5%
10%
15%
20%
25%
30%
Installation Variables
System Cost
$7.00/Watt
$7.25/Watt
$7.50/Watt
$7.75/Watt
$8.00/Watt
$8.25/Watt
$8.50/Watt
Neighborhood Solar Discount
0%
5%
10%
15%
20%
