Technology: Norvento nED 100 turbine
Output: 100 kW
Role: Site Finding / Feasibility / Planning
This single turbine development in Pembrokeshire involved Renewables First in each of the pre-installation phases, including site finding, project feasibility and the all-important planning application. Norvento managed the turbine installation.
Originally assessed for a 500 kW turbine, in the end the 100 kW option was considered most suitable, partly as this scale matches an existing turbine in an adjacent field, thereby minimising visual impact.
The installed turbine is a Norvento nED 100 turbine. The nED 100 turbine is a good-looking, high quality, direct drive, variable-speed machine with an excellent record for reliability. The turbine hub height is 24.5 metres, with a blade tip height of 35.4 metres. The rotor diameter is 22 metres. With a mean hub height wind speed of 6.8 m/s, the 100 kW turbine is expected to generate 35,000 kWh) per year. To put this into context, this could power 95 average Welsh households.
The development brings roughly 32 square metres of an unused land into productive use by generating renewable energy and exporting it to the National Grid. The grid connection runs underground from the turbine to the boundary hedge, then via a new overhead run along the hedgeline for 340 metres to connect to the nearest 11 KV lines.
The site benefits from easy access, with only 130 metres of new access track required to reach the turbine location.
This project was a quick install, with only 3 ½ months between gaining planning consent in July and completing its commissioning in November 2015.
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