Solar Power FAQs


How much solar power should I install?
A typical house will need about 10kW (roughly 30 panels) if you want to produce all of your own power.

How much money will this save me on my electrical bill?
A typical 10.0kW system will save you around $200/month on your electric bill.

Will my electric bill go to zero if I install solar?
No, there is still a minimum fee of around $15.00 per month for Duke Energy customers.

How much will a solar system cost?
The installed cost of an 10kW system should be around $25,000. ($17,500 after the Federal Rebate of 30%.)

What is the payback period for a solar system?
It will usually take around 8 years to save enough money on your electric bill to equal the full sytem cost. However, with financing, many people can start saving money from day one.

How long will a solar system last?
Solar panels are usually warranted to produce at least 80% of their original power rating for a period of 25 years or more. The panel life is probably much longer than that. The power electronics (we typically use micro-inverters from Ehphase) are warranted for 25 years.

Should I install batteries with my system so that I can go off-grid?
No. We do not feel that batteries are financially beneficial yet.

Will my solar panels run my home when the power is out?
Not unless you install some very expensive batteries. Click details for some upcoming options.