Wind demonstration projects and trials DTs appear to have neither enabled participating manufacturers to become significant global suppliers -with a few exceptions driven by additional financial and legislative support from national governments- nor to have established a dominant design.

Wind demonstration projects and trials DTs appear to have neither enabled participating manufacturers to become significant global suppliers -with a few exceptions driven by additional financial and legislative support from national governments- nor to have established a dominant design.The major benefit of wind DTs appears to have been 'learning by using' for utilities and windfarm operators, reducing operational costs.