Digital Lumens, a US-based developer of light-emitting diode (LED) systems, has raised $10m from repeat investors.
Venture capital firms Black Coral Capital, which invests on behalf of an unnamed family, Flybridge Capital Partners, which spun out from publisher International Data Group (IDG) and Stata Ventures, which was set up by chip maker Ray Stata, helped provide the $10m.
In April 2011, Digital Lumens raised $10m from the same investors to take its then-aggregate since launch to $25m, with Silicon Valley Bank providing credit.
Digital Lumens said it had more than 500 large-scale installations lighting system, more than doubling the number reported last year, and saving customers more than $25m per year by reducing their combined annual energy consumption by over 250 million kWh.