Small Company Proposes Hybrid Solar‑Fossil System to Eliminate Separate Backup Power

Solar‑thermal plants that use mirrors to heat air or fluid and drive turbines once dominated discussions of dispatchable solar. A decade ago, advances in thermal storage promised round‑the‑clock output, but the rapid fall in photovoltaic prices made PV panels the cheapest option in most markets. As a result, utilities now pair PV arrays with batteries or natural‑gas plants to cover night and cloudy periods. A start‑up has announced a concentrated‑solar design that lets a fossil‑fueled backup share the same turbine and heat‑transfer equipment used for the solar side. The system would switch to gas when sunlight wanes, eliminating the need for a separate backup plant. If proven, the hybrid approach could cut capital costs and simplify grid integration for solar projects.