Alt Ltd secures £6.3m Series A for solar and battery storage projects

An estimated £6.3m Series A round has been raised by Alt Ltd. The company provides end-to-end services for solar, battery-storage, and integrated renewable-energy systems. Its workflow encompasses initial feasibility studies and technical design through to the physical installation and the long-term management of the infrastructure for commercial clients, community projects, developers, and public-sector organizations.

Based in London, the firm was incorporated in 2020. This latest funding follows a 2025 period in which the company secured £6.4m in total investment.

The business, which is classified under other information technology service activities, employed seven people according to accounts for the year ending 28 February 2025. Formal documentation for this allotment was filed in August 2026.