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Solar FAQs

Solar energy systems work when sunlight hits a solar photovoltaic module (solar panel or PV panel) and causes electric current to flow. The current produced from the PV panels is controlled and regulated by an inverter, which converts direct current (DC) to alternating current (AC), needed for use by household appliances. The electrical panel is where the power gets distributed throughout your house; any excess electricity may be sent from the panel back to Horry Electric Cooperative’s power grid.

That depends on several factors:

  1. The size of your system. You can determine how much electricity you want to produce, then size your system accordingly. Note: You can start out small and add on. A system that will generate 100% of your energy needs is expensive, so most systems are sized to generate only a portion of your home’s needs.
  2. Your site. If you have a shade-free area from 9 a.m. to 3 p.m., you’ll be able to collect more sun and produce more energy than if your site is shaded.
  3. Your region. The more sunny days in your area the more electricity you’ll be able to generate. For example, systems in the Southwest produce more electricity per year than in the Northeast. You can find online calculators to help answer this question in more details, and installers can provide details about your situation, also.

Battery-backed or grid-independent systems use on-site energy storage to store excess energy produced during the day for use at night or when the sun is not producing enough power. Choosing this option will add significant cost and maintenance to your system. Most people opt for grid-connected systems for reduced cost, maintenance, and high reliability. With this type of system, Horry Electric Cooperative continues to provide energy to you when you need it 24/7. Your PV system will produce energy, and even excess energy, on sunny days. Your system will not collect sunlight at night and on cloudy days. That means, you will continue to draw electricity from Horry Electric Cooperative during these times.

Most grid-connected PV systems shut down to prevent back-feeding electricity into de-energized power lines that may have fallen or that crew members may be working on. It’s important to have this shut-down feature to prevent injuries 0 and even death – to those working on the line.

The price of PV components varies depending on the size of the system (generating capacity), type and quality of the components purchased, and complexity of the system selected. The good news for members is that the cost of PV has declined dramatically, while the technology has improved, equally dramatically. Installation costs depend on the size and complexity of the system, but also on the home layout and construction. For example, a simple, south-facing roof allows for an easier install than a roof with hips and valleys. In addition, some homes require structural or wiring upgrades. An average 4 kW system may cost between $10,000 and $20,000, before credits and incentives. This is based on a typical installed cost of $2.50 to $5 per Watt of distributed generation capacity. To determine your costs, look for online calculators to help you estimate your pricing, and also get bids from reputable installers.

Solar Estimate tool – A free public service to help estimate the cost and benefits of solar, wind and other renewable energy systems.

For information on federal tax credits, click here.

For more information on South Carolina state tax credits, click here.

The payback period can range from fewer than 10 years to more than 20 years, depending on the system cost, available rebates and incentives, the amount of electricity produced, and the retail price of electricity you purchase from Horry Electric Cooperative.

Certified PV products and systems generally are reliable, with a life expectancy of about 30 years. Manufacturers test PV panels for hail impact, high wind, and freeze-thaw cycles to represent real-life situations. Most manufacturers offer 20 to 25 year warranties for panels; extended warranties may be available at an extra cost. Little maintenance is required. Occasionally, it may be necessary to rinse modules off with water to remove dust and grime. Other components like inverters may have a shorter life. PV panels may outlast the roof they are attached to. Make sure your roof is in good shape or budget for replacement during the life of the system.

To begin, look at factors such as which direction your home faces, the condition of your roof, and obstructions such as trees and other buildings that may block the sun during the peak generation period of 9 a.m. and 3 p.m. Solar contractors can provide a more detailed analysis on what to expect, and Horry Electric can offer advice, too.

Yes. If your house is not ideal for solar, your rent your home, or you just aren’t ready to make a big investment, Horry Electric has another option. Contact us about our Community Solar program option.

Before choosing a solar system, be sure that your home is as energy efficient as possible. You may want to get a home energy audit to help determine which improvements will be most beneficial. Investing in energy efficiency provides a faster return on your investment. By improving your home’s energy efficiency, you will reduce your overall energy use and may reduce the size of PV system called, that saves more money. Also, make sure your roof is in tip-top shape. If yours is older, you may need to repair or replace it before installing solar (and remember, a solar PV system may last up to 30 years, so be sure your roof will last). Research solar and solar contractors thoroughly before investing in a system. Get at least three quotes before choosing one. Be sure to work closely with Horry Electric for advice and assistance on interconnecting with the grid. We can provide information and history of your energy use that can help you size your system and evaluate savings. Co-op staff has experience in working with other members and solar contractors.

COMING SOON
Horry Electric has restructured rates to give you control of your bill. The restructured rates will be effective for all members beginning with September 2024 use that appears on your October 2024 statement. Advance Pay members will be effective October 1 for October use. Click below to learn more about rates and peak hours.