Isle of Harris

Horgabost, Scotland

Tamed Wind Energy for Microgrids

The West Harris Community Centre sits in the heart of Horgabost on the Isle of Harris in the Scottish Islands (UK). In 2016, Eocycle installed an EOX M-21 (100kW) wind turbine here to satisfy local electricity consumption.

The grid in Horgabost can only absorb 50kW of power. As such, demand for power and the output of the M-21 needed to be balanced to avoid a grid disconnect. Ecodyn (an engineering consultancy based in Scotland) provided an Energy Management System to maximize the wind turbine output while ensuring grid constraints were respected.

Due to the limited power evacuation possibility of the local grid, the M-21 turbine must run in power-reduction mode at times. This mode can be activated remotely and automatically using the interface to the turbine’s EOX SCADA system. This enables coordination of the turbine with the Energy Management System or the local microgrid controller.

Power delivered by the M-21 passes through a back-to-back AC-DC-AC converter that’s conveniently located at the base of the tower. This enables above-standard power quality and (more importantly) full controllability of the output power.

Thanks to an advanced power-control algorithm, Eocycle turbines can be curtailed to 50% of their rated power. No pitch systems in the hub. No dump-loads in the balance-of-plant system.

The smaller the grid, the bigger the challenge to balance consumption and generation of electricity. Eocycle is able to address this challenge without adding complexity to the system or the turbine.

We were nervous about entering the distributed wind sector, owing to a tough operating climate here in the North of Scotland combined with our remoteness for back up if problems were to occur. We have found Eocycle to be a good business partner. The SCADA portal is excellent at providing remote communication all day, every day, which should prolong the lifespan of the components and allow timely servicing. We look forward to many more years of life from this unit.


– Heather Stuart, West Harris Trust Community Center, Scotland

Our turbines are on the cutting edge of wind technology.


Our S-Series is ideal for small farms and enterprises.


Our M-Series is ideal for commercial and industrial applications as well as large agricultural operations.