The power generation by the State-run hydropower units like Maneri Bhali-I (90 MW), Manari Bhali-II (304 MW) and Chila (144 MW) hydro power units was adversely affected on Friday due to silt in rivers, thus widening the gap between demand and availability of electricity. To meet the deficit, 1.50 MU power was purchased from central based hydro power units on Friday. Things are under control, claimed UPCl official on Friday. UPCl would purchase 2.50 MU from open market to bridge the deficit on Saturday, said the power official.