Porterville USD Taps ForeFront Power for Zero-Emission Infrastructure Project Including Solar, Storage, Microgrid & EV Charging PORTERVILLE, Calif.–(BUSINESS WIRE)–Porterville Unified School District (PUSD) is set to develop a comprehensive solar, battery energy storage, microgrid, and electric vehicle (EV) fleet charging project to meet the District’s intersecting energy, transportation, and resilience needs with clean, renewable, lower-cost electricity.