The "smaller" neighbor of the Isle of Eigg, Muck is the smallest inhabited island in the northern inland Hebrides, with an extension of just 5,59 km²; with its 40 inhabitants it is at great risk of depopulation.
The island is energetically self-sufficient although not connected to the mainland, producing 30 kW of wind energy and 33 kW of solar energy, with 150 kW accumulators sized to guarantee uninterrupted supply for 24 hours, in case of non-production from the wind and photovoltaic system.
The installed of each source has been designed in such a way as to be able to guarantee, by itself, the coverage of the electrical demand of the island (105Wh / day). In addition, thermal accumulators are installed in all domestic users which function as system regulators when the systems are in full production and the general accumulator is already charged.
The system is owned and managed independently by the community, through the Isle of Muck Community Enterprise Ltd. and the Isle of Muck Power Ltd. Currently the network serves 20 domestic users, una scuola, 3 shops and municipality. The benefits achieved by the community thanks to the system described are: reduction of the cost of electricity supply, reduction of maintenance costs, reduction of climate-changing emissions, attractiveness of new entrepreneurs with the hope that depopulation will stop.