Google can’t stop investing in clean power. Earlier this week they announced they’d inked their largest clean power contract to date to buy energy from a wind farm in Iowa. And now on Wednesday Google has announced that it’s teamed up with solar panel maker and project developer SunPower to provide funding for installing solar panels on home rooftops.

Google will put in $100 million, and SunPower $150 million, and the combined $250 million will provide financing for leases for thousands of solar panel systems for home and building owners. SunPower launched its solar lease program in 2011 and says 20,000 homes have opted for the leases.

Photo by Katie Fehrenbacher/Gigaom

This isn’t the first time that Google has invested in solar financing for home owners. It also put $280 million into a solar rooftop fund run by SolarCity, and another $75 million into Clean Power Finance’s home…