A grid-tied solar system is connected to the electrical grid and requires the grid to be running for the solar power system to produce energy. Grid-tied systems tend to be the less expensive option, mainly because they don’t need batteries or other equipment to operate. This type of solar power system is great for those who don’t have the space or budget to install a solar system large enough to cover 100% of their energy usage. With grid-tied solar, you can still pull electricity from the grid when needed, and net metering allows the electricity generated to offset the electricity used from the grid during the night or on cloudy days.