Yes, the 30% tax credit for the cost of buying and installing a solar system is available for 2018 and 2019. For 2020 the credit drops to 26%, for 2021 the credit drops to 22%, for 2022 the credits fall all way down to 10%, for 2023 the 10% credit is only for companies that install and maintain solar systems and sell the power to another entity (homeowner, business, utility company, etc.)
