THESE days, the State Electricity Corporation's (PLN) management is very apprehensive. PLN's interim agreement with Pertamina in the buying and selling of electricity from the geothermal power plant (PLTP) Wayang Windu may be annulled just like that. Not because Pertamina will break its promise, but because the state-owned company failed to acquire the 220 MW-capacity power plant located in Pengalengan, Bandung Regency, West Java. In the tender