New solar shingles in Maryland, Virginia, Tampa Florida, North Carolina and other nearby regions have a lifespan of about 20-30 years. However, it’s important to note that the exact lifespan will vary depending on the quality of the shingles and the installation process. For example, if the shingles are not installed properly, they may only last for 10-15 years. Additionally, high-quality solar shingles may last up to 40 years. Ultimately, their lifespan largely depends on the individual product and installation.