EXECUTIVE SUMMARY

By mathematical simulation of windspeed data from Tanzania collected in 1974, some approximation formulae and values have been derived which are of general application WORLDWIDE for the following:

- estimating wind energy yields from cup counter anemometer data, for potential site assessment and as a basis for economic and technical feasibility studies.

- optimising the loading of impulse type wind energy converters (e.g. conventional windpumps) at time of installation or at any time thereafter, so as to maximise technical energy output and of course economic rate of return on annual and seasonal bases.

Additionally, it was determined that 5 top Tanzanian locations may produce economic teturn periods of 3-4 years at competitive international energy costings IF durable low-cost WEC's of unit cost US$ 50-00 per square metre cross sectional area and peak efficiency of 20% can be designed and constructed.