Dong said the decision was taken to bring the testing to Østerild as the majority of tests it planned at Frederikshavn could be achieved onshore.
The first V164 prototype is set for Q2 2014. In a statement, Danish energy company and major offshore developer Dong said that "if the tests are positive there may be interest in further test and possibly commercial collaboration between the two companies".
Originally, the turbine was scheduled for installation in 2013 at Dong Energy's Frederikshavn demonstration site 4.5 kilometres offshore, where it has permission to install a total of six turbines.
Speaking about the latest agreement, Dong CEO Henrik Poulsen said: "The cooperation with Vestas on the V164-8MW turbine is very exciting. We look forward to give our input to the development of Vestas’ next-generation wind turbine, as large turbines, dedicated to offshore conditions, contribute to more competitive offshore wind turbine technology."
Vestas CEO Ditlev Engel said: "The turbine represents a great opportunity for both our companies, and having Dong Energy so closely involved in the test activities will be valuable for us both."
In October, Vestas revealed some of its progress on the V164 in a promotional video. The film showed the mould for the 80-metre blades and the testing hub.
Earlier this year, Vestas put back the development of the V164 by a year. It also cancelled plans to build an assembly plant at Sheerness in south-east England.