ENERGY

Natural Gas Filling Stations Planned: Utilities in Northern California and Baltimore plan natural gas filling stations as they and other companies switch from gasoline- to natural gas-powered vans and trucks. Pacific Gas & Electric Co. said it and Chevron U.S.A. Inc. will operate natural gas facilities at Chevron stations in California. By the mid-1990s, Baltimore Gas & Electric Co. hopes to have 500 natural gas vehicles, about 20% of its fleet, and 20 filling stations in its region. The moves are in line with federal Clean Air Act amendments that require companies with more than 10 vehicles to start phasing in alternative-fuel cars by 1998.