| Abstract |
The Tiwi geothermal field on Luzon Island, Philippines, was developed during 1972-1982 bv Philimine Geothermal Inc. (PGI), the local subisidiary of Unocal Corporation, and the National Power Corporation. Exploratory drilling in 1972-1974 proved reserves for the initial 110 MW plant. PGI's continued drilling success combined with a national electric power shortage to accelerate field development. By the beginning of commercial production in 1979, six turbine generator sets were either installed or on order. In 1982, steam production exceeded eight million lb/hr (3600 Tonnes/ with the startup of Units 5 and 6. |