Residential FAQ

General Questions

How much does a solar system cost? 

A typical residential solar system costs somewhere in the range of $20,000 to $50,000, prior to any incentives. Incentives will lower the cost by at least 30%, and often considerably more, depending on where you live, as state and county incentives differ by area. The base price will vary depending on factors such as your home's current energy usage, and the amount of your electric bill you want to offset.  

To get a free and accurate quote, please contact us.

What size system do I need on my home?

Based on your electricity needs and desire to be energy independent, a Kenergy Solar representative will analyze the potential solar panel locations, available sunlight, shading and other factors to tailor a system to your specific application. The ultimate system size decision will be up to you. 

How does a solar PV system work?

  1. Solar panels collect the sun's energy and convert it into direct current (DC) electricity. The number of panels you need is determined by your electricity needs.
  2. An inverter converts the electricity from DC to alternating current (AC) electricity for use in your home.
  3. A bi-directional electric meter displays net power usage. When you generate more than you use, your meter spins backwards, lowering your electricity bill. When you generate less, it spins slowly forward.
  4. You now produce your own electricity to be used throughout the home. Since there are no moving parts, you don't have to worry about maintenance.
  5. All excess electricity generated is stored in the utility grid for future use. You are using the utility grid as if it were a battery back-up source for your home.

What is net metering and how does it work?

Net metering is a simple concept; power created from your solar system is connected to the electric grid and credited in real time. Any excess power created by the solar system that you are not using at that moment, is fed back into the power grid. As this excess power is 'back-fed', your meter operates in reverse. Literally your meter spins backwards! The power grid is managed by your local utility company and includes everyone connected to it. Any power you don't use is credited back to you and reduces your bill.  

Which direction does my available roof space need to face?

South, West, and East are all good.

Can my roof be repaired after the system is installed?

Yes! It is a good idea to make any repairs or re-roof if needed prior to having a PV system installed. If a new roof is needed once the system is in place, Kenergy can temporarily disconnect, remove, and then reinstall the panels for an hourly rate.

Do I need to notify my building insurance provider when I install a system?

Yes. Because the building insurance policy would also have to replace the PV system in the event of it being damaged, you should notify your insurance company so that it is included under your policy.

How environmentally friendly is the manufacturing process?

The environmental impact and safety risk associated with the manufacture of solar cells is negligible compared with conventional energy sources such as coal, oil and nuclear power. Especially the silicon that is used almost exclusively in the manufacture of solar cells today is completely harmless.

Do panels store energy from the sun?

The electricity generated by your system is used directly by your property when it is produced. Any power generated in excess of your home's requirements is sent out to the utility grid, spinning your meter backwards. This establishes an economic credit that is used to buy back the utility's power at night, or any other time that your home's electricity demand is greater than your system's production.  

What can a solar system power in my property?

The electricity generated by your system will be used to power any and all devices and appliances plugged into your home's electrical service. Solar systems are not designed to provide power for a single device, e.g. an air conditioner, but go to offset the total sum of your electricity usage.

How much roof space is needed to power my home?

A good rule of thumb is to allow 100 sq. ft. per every kilowatt (kW) of electricity the system produces. A typical solar electric system for a home will require approximately 300-500 square feet. A typical solar electric system for a business will require approximately 5,000 square feet.

How do you attach the system to my roof?

We use the highest quality racking system on the market today made entirely from anodized aluminum and stainless steel for long life without rusting. The racking system attaches directly to the roof rafters and there are several ways for us to do this.

How long does it take to install?

It takes 2-3 days for our qualified installers to install a typical residential system. With rebate paperwork, utility interconnection agreements, permits etc., our turn around time is 4-8 weeks. A commercial solar electric system will depend on the system magnitude, location, and other variables.

What is an inverter?

An inverter converts the DC (direct current) power produced by solar panels to common household AC (alternating current) power.

My roof gets sun for most of the day; that would be enough for a solar system, right?

Even though your roof gets sun for most of the day, it may or may not be enough to make a solar electric installation cost-effective. On a site evaluation we'd be able to determine this for you. If there is not full access to the sun, year-round, it may take longer for the system to pay for itself, which would decrease the return on your investment. Removing or trimming back some trees around your property can help with better access to the sun.

Will this system heat my pool?

Typically, a solar electric system is not the most efficient or cost effective way to heat a swimming pool. Using solar water heating panels, natural gas or a propane heater would be a more efficient method.

How long will my solar system last?

Most solar panels come with a 25 year power output guarantee and are expected to last at least twice that long. The power output guarantee on the solar panels is provided by the manufacturer of the panels and states that at the end of the 25th year, the solar panel will still produce a minimum of 80% of their original power output.

If I move can I take my solar system?

Yes, you can take your solar electric system with you if moving but it's best if you leave it on the your original house because it increases the resale value of a home.

Why should I install a Solar PV system now?

  • Solar is now cost-effective compared to utility grid electricity
  • To eliminate or reduce your electric bill
  • To turn your variable energy cost into a fixed cost for decades to come.
  • Solar increases the value of property
  • To utilize current incentives such as the Maryland Energy Administration grant program as well as local property tax credits
  • Adds significant value to your property without increasing property taxes.
  • Become energy independent for the future

    Want to learn more? Get a Quote.