· What are the available incentives?
o An uncapped 30% federal tax credit is available in which 30% of the total cost of a solar installation is credited against your federal taxes. Businesses are eligible for MACRS Accelerated Depreciation as well.
o TVA's Green Power Providers Program will pay the base rate plus 9 cents per kWh for all solar electricity production. For example, a 4 kW system generates about 430 kWh per month on average, so 4 kW would generate about $82/month on average. This would appear as a credit on your monthly bill. Click here to view an electric bill with solar.
o TVA pays $1,000 to customers who install grid-tied solar electric systems.
· What are the financing options?
Our financing partners are listed on our website with links to their programs. Click here to view options and get started.
· What steps should I take to decide if solar is right for me?
o Gather your last 12 electric bills to determine your annual use.
o Think about how much how much money you want to invest in solar.
o Think about what site might be the best location. Solar performs best on south-facing roofs. East/west roofs with low pitch are also suitable. There should be little or no shading from trees, chimneys, and dormers. If the roof is not suitable, we can install panels on another structure or on poles.
o Once you decide you want to move forward, we will conduct a site evaluation.
· What happens during power outages?
A grid-tied solar system must shut down until utility power returns so that it doesn't back-feed the grid. When grid power goes out, the inverter will automatically shut off. When the grid power is re-established, the inverter will automatically turn back on after it has synchronized with the utility grid.
· Will my system work on cloudy days?
Usually, yes, but it will be less productive. Production is proportionate to the thickness of cloud cover.
· How will I know if my system is producing what it should?
The inverter’s faceplate shows production data. You can compare your actual production to our estimates to ensure your system is on track. Production monitoring that can be accessed on-line is available at an additional cost.
· How long does it take to install the system?
For a typical residential system, it takes about three days to install the PV panels and equipment. Then, the system must pass a final State electrical inspection which normally takes one business day to schedule and pass. It can take another 7-10 business days for the utility to install the separate solar meter. The local utility and LightWave Solar will turn on the system once the utility company has installed the solar meter.
· What are the panel and inverter warranties?
SunPower panels have a product warranty for 10 years and a limited power performance warranty for 25 years. SunPower inverters are warrantied for 10 years. Click here for details.
· What if I need a new roof or I am building a new house?
You want your roof to be in the best condition possible because the average working life span of a solar system is around 30 to 40 years. Thus, we don't recommend installation on composition shingle roofs over 10-years-old. If you are building a new house, click here for guidance on building a solar-ready home.
· Can the solar panels withstand high winds and hail?
The panels are supported by high quality stainless steel and aluminum racking systems designed and mounted based on American Society of Civil Engineer (ASCE) wind load provisions. All solar panels are tested to UL-1703 standards and are capable of withstanding one inch (2.5cm) hailstones at 50MPH. They are covered with tempered glass, akin to a car windshield. Additionally, the panels can be covered by homeowners insurance.
· Do I need approval from my homeowners association?
Some homeowners associations have rules regarding the installation of anything on your roof or grounds. If you belong to a homeowners association, contact them and ask about neighborhood guidelines. In our experience, most homeowners associations decide in favor of solar system installations.
· Will adding solar increase the value of my home?
Yes! A solar system reduces electric bills, so it is a valuable asset to any homeowner. Click here for a Berkley Lab report summary showing an average selling price increase of $17,000. Click here for an NREL report summary that found homes with solar sell 20% faster and for 17% more.
· What do I need to know about solar system installation?
We mount solar panels on your roof and run wires through conduit to a solar meter. From there, we also run wires through conduit to your breaker panel. In the same vicinity as your utility meter, we mount an inverter, AC disconnect, and the solar meter. This equipment can be mounted either inside or outside and takes up about 15 square feet (3' x 5' area).
Which is for you? On grid, battery backup, or off grid.
We are frequently asked what happens when the grid is down and about batteries, etc. Click here to review three types of solar systems; grid tied, battery backup and off grid.