In the coming months 25 Nordtank 500 kW turbines from Denmark will be installed in the Netherlands. Twelve of them are to replace the 21 turbines which once made up the now obsolete wind farm at Oosterbierum. NUON, the regional distribution company, has taken over the site from SEP, the association of electricity generators. A peculiar condition of the contract was that the turbines were not to be installed elsewhere in the Netherlands. Construction of the plant started last month. Another 11 Nordtank units will be installed not far from Oosterbierum by Tjessinga Windenergie BV, a joint venture between a farmer and De Wolff Construction Company. De Wolff is Nordtank's agent in the Netherlands. The Tjessinga plant is going up near the village of Het Bildt, three miles from the Oosterbierum site. From November the turbines will deliver electricity to the grid. The two final turbines of the 25 are destined for a site near Lemmer and will be owned by a local farmer.