FAQs
General Questions
How do solar panels work?
The solar panels installed on a home's roof are critical components in a network that converts the sun's energy to electricity. Each panel contains photovoltaic cells that absorb sunlight and generate DC electricity.
The system is stabilized by a charge controller, and an inverter converts the DC electricity into AC electricity. That energy is directed through the electrical panel, supplying your home with solar-generated power.
What are the benefits of having solar panels?
A solar panel installation delivers benefits you can enjoy right away. For example, the system begins to pay for itself as soon as it's turned on. Lower energy bills quickly add up to long-term savings year after year.
The benefits of a residential solar array include:
Reduced grid dependence
Tax credits and rebates
Increased home resale value
A reliable source of clean energy
Years of eco-friendly operation
How do I store my energy?
You can only store energy with an energy storage system that we can provide and install for you. Sandbar will work with you to see if a traditional grid tied solar system or one with energy storage is in your best interest. With energy storage battery back-up, you will have peace of mind that certain key loads, (lights, computers, refrigerator, etc…), will remain on during a power outage.
How much does a battery system cost for partially backing up an average 2,000-sQFt home?
It depends on your home's average kilowatt per hour consumption. A battery system providing partial backup covers essentials, such as your home’s internet, your refrigerator, and some lights, plugs and fans. The cost of an average solar battery backup system before rebates and incentives are factored in ranges between $25,000 and $30,000.
How much does a battery system cost for whole-house backup for an average 2,000-sQFt home?
The cost of whole-house solar battery backup before rebates and incentives are factored in can vary from $25,000 to $50,000. A large system can provide enough stored power to keep an entire house up and running for multiple days, depending on how much energy is consumed each day. Keep in mind there are numerous incentives available to cover the costs of battery backup. Ask our team for details.
What is the safest chemistry type for home battery systems?
We strongly recommend lithium-iron phosphate batteries for home solar backup systems because of their stable battery chemistry. The units are low maintenance, resist high temperatures, and offer a longer shelf life than other battery types.
Do solar panels work during power outages?
Under normal situations without battery backup, your solar system will not be operational during a power outage. Safety requirements prohibit energy feeding back to the grid when the power is out. In this case, your system will automatically turn back on when power is restored. If you have a battery back-up however, (energy storage system), you can set up your solar system to remain operational, along with certain key loads, during a power outage.
Do solar panels work on cloudy days?
Yes. Regardless of the weather, the sun's ultraviolet rays filter through the clouds. Photovoltaic cells are highly sensitive to this light, so they continually convert it into electricity even when the skies are overcast. You can rely on the panel array on your roof to produce solar energy on cloudy days.
How efficient are solar panels?
The performance of photovoltaic cells has greatly improved over the years. Today's solar panels feature impressive power output, and that results in highly efficient electricity production.
Solar panel efficiency is determined by system design, materials and installation. On average, you can expect an efficiency rating between 18% and 22%.
Installation & Maintenance
How long does installation take?
Installing residential solar panels starts with a site evaluation. We design a system tailored to your home and handle the permitting process. Solar panel installation is usually completed within one to three days.
The final step is completing your NET metering application. PG&E approval can take several weeks. We handle all of the local and utility permitting and interconnection paperwork, so you don’t have to.
Is maintenance required?
We recommend cleaning your home's solar panels twice a year – around Memorial Day and Labor Day (add in Halloween if there happens to be ash on your panels from wildfires). Taking all necessary safety precautions, it's a straightforward DIY project that can be taken care of with mild soap and a soft towel. You will also need a long-handled squeegee. Keeping the panels clean helps ensure efficient system performance.
How long do solar panels last?
Your solar panels are under warranty for 25 years. However, solar panels are expected to produce for well over 30 years. Most solar panel installations generate electricity for 25 to 40 years. During that time, the system offsets energy bills and reduces your dependence on the grid. Regular inspections help ensure maximum years of efficient performance.
What if my roof needs repairs?
Panels can be temporarily removed and reinstalled.
How many solar panels will I need?
Most homeowners can cover their electricity usage with 16 to 24 solar panels. The final number is based on your annual electricity usage as well as your system's panel wattage and output. We also factor in the home's location, roof type and the design of your solar array.
Technical & Financial
How long does it take for solar panels to pay for themselves?
The time it takes for solar panels to pay for themselves averages between six and 10 years. Most homeowners achieve solar payback within eight years of installation.
The break-even point varies depending on these factors:
System installation cost
Value of rebates and tax credits
Average electricity usage
Are there financing options?
Yes, various financing and incentive programs are available.
What happens if I move?
Solar systems can be transferred to the new owner or removed and reinstalled at the new location.
How do I monitor my system?
Systems come with monitoring tools to track performance and savings.
Are there rebates and/or incentives for residential solar?
Yes. The federal solar tax credit is calculated at 26% of the net system cost. Read more about this here.
Will I have an electrical bill?
Yes, utilities typically have a service charge. Net metering ensures you get credited for all the energy you produce. Solar will significantly reduce your bill, no matter how much power you use. Read more here.
Will solar affect property taxes?
Your solar system will qualify for a property tax exemption. The value of your solar is subtracted from the total property value. Sandbar recommends speaking with a tax attorney.
FAQs for central coast residents
Q: What is the average cost of solar panels for Central Coast residents?
The average cost of solar panels for Central Coast residents depends on multiple factors, including property size, current roof condition and the existing electrical system. For a home solar energy system, you can expect to pay somewhere in the range of $20,000 – $35,000, keeping in mind there are many financing options available.
Our energy consultant provides you with a no-obligation property evaluation that outlines the details, including the expected cost of installing a new solar energy system.
Q: Do the electric bills stop when I make the switch to solar?
You’ll still receive a monthly electric bill after you go solar, but it will be significantly reduced. Homeowners are charged a grid connection fee that averages between $10 to $20 each month.
If you use more electricity than your solar panels generate, expect to be charged according to the utility’s standard rate.
Q: What solar incentives are available for Central Coast residents?
The current federal tax credit on a solar panel investment is 30%. If you decide to include a battery backup system with your solar project, you may also qualify for savings through California’s Self-Generation Incentive Program.
Q: How do solar panels convert sunlight into electricity?
Each solar panel contains photovoltaic cells that absorb sunlight and convert the energy into DC electricity. This current is converted to AC through the system’s inverter, generating sustainable energy that powers your home or business.
Q: Is it possible to add solar battery backup to an existing solar installation?
Yes. Our solar technicians can work with existing solar panels and ensure their compatibility with a new solar battery backup system. We take care of these modifications for residential and commercial properties.
Q: Is there a best way to switch to solar energy?
Work with a locally owned solar panel company that can demonstrate years of successful installation experience. Avoid the hard sell. The best solar provider won’t try to pressure you into making decisions. Instead, trust a solar installer who takes the time to answer your questions and explain your options.
Q: Can you recommend additional resources for information on going solar?
Yes. We suggest these links for Central Coast residents who are thinking about switching to solar.
Homeowners Guide to Going Solar
California Solar Initiative
Financial Assistance
Federal Trade Commission