Who is a Solar PV Engineer and What Do They Do? A Solar PV Engineer specializes in designing, testing, and maintaining solar energy systems. They ensure that energy yield assessments are accurate, helping organizations maximize their efficiency. Electrical and electronics engineers, the category that includes solar engineers, earned a median annual. They help design, build, and improve solar power setups for homes, businesses, or large solar farms. These engineers figure out where panels should go, how to connect them safely, and how to get the most energy from the sun. They also make sure the system works well with batteries or the electrical. A solar engineer is a professional who specializes in using sunlight to generate electricity.