Alter Enersun is a Spain-based renewable energy company that develops, finances, builds, and operates photovoltaic (solar) power plants. The company focuses on utility-scale projects that feed electricity into the grid and on long-term power supply arrangements for large consumers.
With activities concentrated in the Iberian Peninsula, Alter Enersun manages the full project lifecycle—from site development and permitting to construction, operation, and asset management—aimed at delivering stable, low‑carbon electricity. Its portfolio centers on ground-mounted PV installations, supporting regional decarbonization goals and providing reliable renewable power to municipalities and industrial offtakers.