Utility companies in most states average about a 3-4% increase every year ***see below. This means your savings increases every year as you generate your own power! Once you add solar, your payments can be fixed. 

For Example, if your savings are only $50 per month for the first year, it can be a savings of $100+ per mo in 10 years. The cost of Solar power is fixed over the years, while the cost of utility bills increase every year. 

We get asked from every homeowner “how much will I save each month”.  Thus, the majority of us want to save money when we make the switch to solar. However, this is not always an easy question to answer as there are many factors that will determine how much will be saved, if any.

Although some utility companies claim they haven’t raised their rates in years, this is partially true. Some really haven’t raised their kwh charge in a while, but they have added a number of junk fee’s and charges to make up for rate increases. These charges can be confusing as they appear to have no direct benefit to us as homeowners. But the truth is, in Arizona, electricity rates have gone up 61.80% since 2001 according to the government website www.eia.gov. The chart below clearly shows an upward trend and a steady yearly increase in the cost of residential electricity.

With the increase of 61.80% in the past 16 years, we can likely expect the trend to continue for the future. This would equate to about a 4% annual increase. Although this may not seem like much, the chart below shows that it adds up.


Utility Cost Increase Chart – 20 years

3% annual increase
5% annual increase
YearsMonthly Average Electrical Bill  YearsMonthly Average Electrical Bill  
1$200month 1$200month 
2206month 2210month 
3212.18month 3220.5month 
4218.5454month 4231.525month 
5225.101762month 5243.10125month 
6231.8548149month 6255.2563125month 
7238.8104593month 7268.0191281month 
8245.9747731month 8281.4200845month 
9253.3540163month 9295.4910888month 
10260.9546368month 10310.2656432month 
11268.7832759month 11325.7789254month 
12276.8467741month 12342.0678716month 
13285.1521774month 13359.1712652month 
14293.7067427month 14377.1298285month 
15302.517945month 15395.9863199month 
16311.5934833month 16415.7856359month 
17320.9412878month 17436.5749177month 
18330.5695265month 18458.4036636month 
19340.4866122month 19481.3238467month 
20350.7012106month 20505.3900391month 

As you can see, if there is even a 3% increase annually, you will be paying your utility company much more than what you would expect down the road. Over a 20 year period, based on government historical data, we will pay 2 and a half times our first year for electricity. With this in consideration, the benefit of the right solar package, if financed for example, your monthly payment will NOT increase for 20 years. So, if your savings are only $20 for the first year, it is likely to increase every year since you will generating your own electricity!

Home Values

Analysis by Mike Orr, housing analyst with Arizona State University’s W.P. Carey School, found that homes with solar panels sold for a premium over those without in the last year, unless the solar is leased.

Average price per square foot

Non-solar: $131.14
Owned solar: $144.31