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Space-Based Solar Power

Tier 3 · $158-710M (2025) · +40% CAGR

Space-based solar power (SBSP) captures solar energy in geostationary orbit where sunlight is available nearly 24/7 and beams it to Earth via microwave or laser. While technically ambitious, the concept has received renewed investment from governments and startups as a potential source of baseload clean energy. Falling launch costs are improving the economic case, and several demonstration missions are planned or underway.

Market Size

$158-710M (2025)

Growth Rate

+40% CAGR

Key Metric

Caltech MAPLE demo beamed power from space in 2023

Companies in This Sector

4 tracked

Challengers

Space Solar (UK)CASSIOPeiA rotating heliostat design for continuous GEO solar power

SolarenUS-based SBSP developer with PG&E power purchase agreement

Emerging

AetherfluxLEO-based laser power beaming to ground receivers

Virtus SolisModular orbital solar power station architecture

Key Trends

→Falling launch costs improving SBSP economics toward grid parity
→Caltech SSPP demonstrating in-space solar energy collection and wireless beaming
→UK and ESA funding SBSP feasibility studies and technology development
→Lightweight solar panel and wireless power transfer technology advancing rapidly