FLECS – Floating solar

The Business Research Company’s 2026 report on FLOW summarises the sector.  “Floating solar refers to solar power systems installed on bodies of water, such as lakes, reservoirs, or ponds, instead of on land. This system provides a unique and innovative solution to expanding renewable energy capacity while conserving land and offering additional environmental benefits. Floating solar systems contribute to sustainable energy generation and help address the growing demand for clean power by harnessing the surfaces of water bodies. The main types of floating solar include stationary floating solar panels and tracking floating solar panels. Stationary floating solar panels are fixed in one location on the water surface and do not track the sun’s movement. They are simpler to install and maintain compared to tracking systems and are often chosen for their lower cost and reliability. The various capacities involved are below 5 MW, 5 MW to 50 MW, and above 50 MW and several connectivity include on-grid and off-grid. The floating solar market size is expected to see exponential growth in the next few years. It will grow to $18.99 billion in 2030 at a compound annual growth rate (CAGR) of 26.0%. The growth in the forecast period can be attributed to increasing investments in large-scale floating solar plants, rising demand for hybrid hydro-solar projects, advancements in floating platform durability, expansion of grid-connected floating solar systems, growing focus on maximizing renewable energy density”

SubConnected FLECS system has been specifically designed for this rapidly growing market for renewable energy developers. Operating in variable water depths and heat the FLECS system handles the changing water levels and movement. Using a specific designed spar hub, which can also include a transformer that uses the surrounding water for cooling, the FLECS system can connect multiple panels to the grid. Using our partner, Seaflex, mooring systems again specifically designed for changing water depths delivers additional benefits. 

The SubConnected AB Floating Energy Connection System – FLECS is designed to cope with the movement in all water conditions. The super dynamic cables flex and absorb all the movement between the solar panels and the connection spar hub. The connection hub links the hub to the grid connection point. The FLECS system brings

  • A new generation of super dynamic lightweight Kevlar cables (<80mm 6kg per metre) from 3.6Kv to 33kV and 66kV in all water conditions
  • A unique patented spar hub for dry connecting multiple cables from devices and taking the energy to the grid connection
  • The inter array cables never touch the ground or break the surface
  • SubC through FLECS offers an innovative, proven and extremely cost-efficient cable and spar hub system from design to deployment with long life and low maintenance
  • Key Advantages
    • Marine Operations are faster and less expensive
    • O&M and downtime is significantly lower
    • Specifically designed for floating devices in all floating conditions and can include transformers in the hub
    • Significantly reduce capex, opex, downtime, maintenance and LCOE
    • Developed for the W4P WEC deployed at Runde in 2017 the cable and spar hub is still in place and operable after 9 years
    • Working with our partners the cable have undergone extreme longevity testing and simulations at RISE (Research Institute of Sweden) and Chalmers University of Technology