AGL Energy, Southern Company and GE Ventures were among the participants in a series B round that took energy optimisation company AMS's total equity funding to $52m.

US-based energy optimisation technology provider Advanced Microgrid Solutions (AMS) secured more than $34m in a series B round yesterday that included energy utilities AGL Energy and Southern Company.

GE Ventures, the corporate venturing arm of industrial equipment producer General Electric, also took part in the round, which was led by investment firm Energy Impact Partners and backed by DBL Partners, Macquarie Capital and early investors including Arnold Schwarzenegger.

AMS has built a technology platform called Armada that combines energy storage…