Sunrun (RUN) Stock Analysis & Winston Score

Sunrun is the largest residential solar company in the United States. It installs solar panels and battery storage systems on people's homes, letting families generate their own electricity instead of buying it all from the power company. Its main customers are homeowners, and it competes in the fast-growing home energy market alongside companies like Sunnova and Tesla Energy. Sunrun makes money primarily through long-term contracts — either leases or power purchase agreements — where homeowners pay a monthly fee or a per-kilowatt-hour rate for the solar power their system produces. This creates a recurring revenue stream that can last 20-plus years per customer. The company operates almost entirely in the U.S., with a large installed base that gives it some scale advantages in financing and installation. The key growth driver is rising electricity prices pushing more homeowners toward solar, but the main risk is that higher interest rates make its financing-heavy business model significantly more expensive to run.