Gridco, a developer of energy management technology for electric utilities, has raised $8 million more in venture capital. Six separate investors participated in the offering.

Gridco Systems is developing a new generation of utility-scale power management systems. Led by experienced entrepreneurs, the Gridco Systems team has deep expertise in power systems, power electronics, energy, signal processing, networking and distributed computing. Privately held, the company is based in Greater Boston, Massachusetts and is backed by top-tier Clean Tech investors General Catalyst Partners, North Bridge Venture Partners and RockPort Capital.