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What is a stand-alone power system or ‘SPS’?

A stand-alone power system or ‘SPS’ is an energy supply unit made up of a renewable energy source or sources, a battery, inverter and, in most cases, back-up generation.  The unit operates independently of the main electricity grid to store and deliver reliable power to a household or business. It remains part of Western Power’s service area, with our business owning the unit and being responsible for the installation and ongoing maintenance.