DAR ES SALAAM (Reuters) - Tanzania has invited bids for construction of emergency power plants to supply a total of 260 megawatts (MW) to ease its chronic energy shortages, its president said. Rainfall has an outsized influence on the agrarian economies of east Africa, which depend on hydro-dams for electricity generation. "A tender has already been announced to seek a contractor that will meet the required standards and come up with affordable costs," President Jakaya Kikwete said in a month-end national address televised late on Friday. He said the state-run Tanzania Electric Supply Company (TANESCO) expects to add the new power to the national grid by July. In mid-January, the government was forced to extend rolling blackouts after a prolonged drought led to a national shortfall of 230 MW. Tanzania seeks bids for 260 MW power plants | Reuters Why every time we go for emergency solution? Do we fail to plan or we plan to fail?