The principal conditions necessary for the development of wind power projects are given below.

For wind power generation, it is desirable to have an average wind speed of at least 6.5m/sec. Visual indications of approximate wind speed are given below.

The Tomamae Green Hill Wind Park (20MW capacity; twenty 1MW turbines) currently operating in Tomamae-cho, Hokkaido, sits on 100 hectares of land. Large-scale wind power projects require at least 50 hectares of land. It should be noted that development of a wind power project can entail the acquisition of approvals, such as the change of designated use of agricultural land, the release of area designation for agriculture promotion and the development of a forest land. It is, therefore, necessary to confirm land ownership, leaseholds and any other rights attaching to a prospective site.

To transport turbine blades from a port facility to a site, roads at least 5m wide are necessary. Building new roads or widening existing roads is extremely costly.

Transmission of electricity from a large-scale (10-30MW) wind power generation facility requires that 60,000-volt transmission lines (or a transformer station or generation plant) be located nearby. If the distance from the wind power generation site to an electric power company's transmission lines (approx. 60,000-volt) is too long, necessitating the installation of transmission lines and huge costs to do so, the economic viability of the project can be threatened.