There are a lot of smart lighting startups trying the wireless route to network lights for better efficiency. Then there’s Redwood Systems, the startup that wants to control your lights over Ethernet cable. On Wednesday, the Fremont, Calif.-based startup announced a $11.75 million Series C round, with investors including Battery Ventures, U.S. Venture Partners, Index Ventures and Mitsui & Co, Ltd.

Redwood has raised about $30 million since its 2008 founding for its unusual LED-over-Ethernet power and control technology, and now deploys its system with customers including Johnson Controls, SAP, Volkswagen and Facebook. ...