SolarCity to spend $120M on direct marketing company

A direct marketing company majority-owned by Guthy-Renker — the Proactiv infomercial folks — is being acquired by solar panel installer SolarCity. It’s time for solar panels to enter the modern marketing age.

A German solar battery startup comes to America

A German company has engineered a lithium-ion battery system with wireless communication to enable homeowners to manage their solar electricity generation and use and control appliances.