US-based Power Assure raised $13.5m in series B funding on Monday from investors including power and automation corporation ABB, venture capital firms Draper Fisher Jurvetson (DFJ) and Judith Point Capital, and investment firm Good Energies backed by the Brenninkmeijer family.

ABB invested $1.5m in Power Assure in September 2010, bringing Power Assure’s series A round to $15.3m. DFJ, Judith Point and Good Energies all previously invested in Power Assure as part of the round.

Power Assure develops software…