Rooftop solar has been booming in recent years, but by itself it’s not enough. Even homes with good exposure can’t always produce 100% of the occupant’s usage. According to a recent article from the NRDC, community solar developments could be the solution.
Community Solar is a way for multiple households to access clean energy. Programs differ, but basically each household gets a share of the field and receives credit for that share’s production on their electric bill. The fields are accessible to more residential electric users than rooftop installations, which face obstacles such as roof exposure, upfront costs, structural issues, and shade. The article reported that solar fields are a way to get low cost and accessible renewable energy. “In the study, commissioned by the Natural Resources Defense Council (NRDC) and the National Rural Electric Cooperative Association (NRECA), analysts from the Brattle Group found that community solar could be a more cost-effective and powerful carbon-cutting tool than individual rooftop installations.”
The panels in a solar farm can also be placed for optimal production and generate more efficiently than rooftop installations can. “The study compared 200 hypothetical zero net energy (ZNE) homes in both Minnesota and New Mexico and determined that the cost of installing community solar to power ZNE homes was 30 to 35 percent less than individual rooftop installations… The savings from community solar are due in part to economies of scale, as well the technological advantages of a large, offsite array. Large solar arrays can be adjusted to catch more light throughout the day as the sun moves across the sky, and be oriented in an optimal direction, and thus generate more electricity than rooftop panels. And by offering an offsite location, community solar enables more people to use solar energy, even if they don’t have enough space on the roof or if their rooftop is shady.”
As more states and local communities push for “net zero” goals, with California pledging to go 100% renewable and zero carbon by 2045, community solar has an important role to play. Here in Massachusetts, where we have older buildings and lots of trees, many homes only get part of their bills covered by rooftop, or don’t qualify at all. Click below to find out what programs are available to you.
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Community Solar Makes Solar Available to All