Floating Solar Patents

Floating solar (floating photovoltaics, FPV) patents cover float/pontoon-mounting innovations; mooring and anchoring innovations; offshore wave-resilient innovations; and electrical, cooling, and co-benefit innovations — with IP held by floating-mounting leaders and offshore-FPV pioneers (in a field deploying solar on water to free up land and exploit cooling and reservoir co-benefits). MAJOR FLOATING-SOLAR PATENT HOLDERS: CIEL & TERRE: Hydrelio — the leading floating-mounting system (modular high-density-polyethylene HDPE floats supporting standard PV modules on inland reservoirs/ponds), a foundational FPV-mounting estate. SUNGROW FLOATING (Sungrow): float systems and inverters for large FPV. OCEAN SUN: a distinctive MEMBRANE-based floating design (PV modules on a thin floating membrane that conforms to the water, with direct water cooling) for reservoirs and near-shore/offshore. SOLARDUCK: offshore floating solar with a triangular, wave-following modular platform that keeps panels elevated above the waves. OTHERS: Oceans of Energy (offshore FPV in the North Sea), Trina Solar and BayWa r.e. (FPV projects/systems), Statkraft and Equinor (developers), Swimsol (small marine), and Isifloating. Float/pontoon mounting (inland) and offshore wave-resilient floating designs are the core FPV patent domains — and the move from calm inland reservoirs to harsh OFFSHORE environments is the open, high-value frontier.

Float and pontoon-structure innovations; modular-array and layout innovations; mooring and anchoring innovations; and variable-water-level innovations represent core inland-FPV patent domains — and the floating structure plus the mooring (handling changing water levels) are the central engineering. FLOAT / PONTOON PATENTS: the floating support — HDPE pontoon/float design (buoyancy, module tilt, walkways, drainage), float interconnection/modularity (assembling large arrays from snap-together floats — Ciel & Terre), membrane/raft alternatives (Ocean Sun), and materials (UV/weather-resistant, recyclable). MODULAR-ARRAY PATENTS: array layout, walkway/access design (for maintenance), ventilation/cooling channels, and density vs. access trade-offs. MOORING / ANCHORING PATENTS: anchoring the floating array against wind/current while accommodating VARIABLE WATER LEVELS (reservoirs rise and fall by meters — the mooring must keep the array positioned without slack or over-tension) — bank, bottom, and tensioned mooring, and water-level-compensating systems; mooring is a distinctive FPV challenge (vs. fixed ground-mount). STRUCTURAL PATENTS: wind-load and stability design, and array motion control. The float/pontoon structure (modular, durable) and variable-level mooring/anchoring are the highest-value inland-FPV IP because they determine cost, durability, and deployment on real reservoirs.

Offshore wave-resilient innovations; electrical and cabling innovations; water-cooling and efficiency innovations; and evaporation, water-quality, and hydro-hybrid co-benefit innovations represent additional floating-solar patent domains — and offshore resilience plus the water co-benefits are the frontier and differentiators. OFFSHORE WAVE-RESILIENT PATENTS: floating platforms that survive waves, swell, and storms at sea (far harsher than inland) — wave-following/articulated platforms (SolarDuck's elevated triangular design), compliant membrane systems (Ocean Sun), wave-load and fatigue design, dynamic mooring for offshore, and survivability — offshore FPV is technically much harder and the most patentable, valuable open area (and synergizes with offshore wind for shared infrastructure). ELECTRICAL / CABLING PATENTS: electrical design for the water environment — corrosion/moisture protection, floating/dynamic cabling, inverter placement (on-water vs onshore), and safety/grounding on water. WATER-COOLING / EFFICIENCY PATENTS: the water keeps panels cooler, boosting efficiency (a real FPV advantage) — designs maximizing cooling (membrane direct contact — Ocean Sun), and bifacial gains from water reflection. CO-BENEFIT PATENTS: reducing reservoir EVAPORATION (valuable in arid regions — covering water cuts evaporative loss), algae/water-quality effects, and HYDRO-HYBRID systems (FPV on hydropower reservoirs sharing the grid connection and complementing hydro — a major synergy). Offshore wave-resilient platforms and water-cooling/evaporation co-benefit designs are the highest-value, most-differentiated FPV IP.

Floating solar startup IP strategy must navigate Ciel & Terre's foundational inland-mounting estate, Ocean Sun/SolarDuck/Oceans-of-Energy offshore patents, mainstream-PV and floating-structure/marine prior art (PV modules are commodity; floating structures borrow from marine/aquaculture engineering), the calm-inland vs harsh-offshore divide, permitting/environmental considerations (water bodies have ecological and regulatory constraints), and a landscape where the floating structure, mooring, offshore resilience, and co-benefits are the durable assets; understand that PV modules are commodity and inland pontoon mounting is established (Ciel & Terre), so the durable startup IP is in offshore wave-resilient designs, variable-level mooring, water-cooling/co-benefit designs, and marine-environment electrical, and that demonstrated durability/survivability and cost matter as much as patents; identify whitespace in offshore FPV, mooring, water-cooling, and hydro-hybrid/evaporation co-benefits. FLOATING-SOLAR STARTUP IP STRATEGY: PV MODULES ARE COMMODITY, INLAND MOUNTING IS ESTABLISHED — OFFSHORE, MOORING, AND CO-BENEFITS ARE THE IP: patent the offshore wave-resilient floating structure, variable-level mooring, water-cooling/co-benefit design, and marine electrical — not the panel or generic inland pontoon; OFFSHORE WAVE-RESILIENT FLOATING IS HIGHEST-VALUE WHITESPACE: surviving waves/swell/storms at sea is far harder than inland reservoirs and the largest untapped resource (and synergizes with offshore wind for shared infrastructure) — wave-following/membrane platforms (SolarDuck/Ocean Sun) are the frontier; VARIABLE-LEVEL MOORING IS A DISTINCTIVE FPV PROBLEM: keeping arrays positioned as reservoirs rise/fall (or in offshore conditions) is a real, patentable engineering challenge; WATER-COOLING AND EVAPORATION/HYDRO-HYBRID CO-BENEFITS ARE DIFFERENTIATORS: maximizing the cooling efficiency boost, reducing reservoir evaporation (arid regions), and hybridizing with hydropower (shared grid connection) are valuable, patentable co-benefits; MARINE-ENVIRONMENT ELECTRICAL AND DURABILITY ARE UNDERRATED IP: corrosion/moisture-resistant electrical and decades-of-water durability are real problems; PERMITTING AND ENVIRONMENT ARE PARALLEL CONSTRAINTS: water bodies have ecological/regulatory limits — IP without a permitting path is incomplete; WHEN TO PATENT: NOVEL STRUCTURE/SYSTEM WITH MEASURED PERFORMANCE: file once a system shows measured results (survivability in sea-state/wind + mooring loads + cooling efficiency gain + cost $/W + durability years + evaporation reduction) vs. inland-FPV/offshore baselines — measured survivability, cooling gain, cost, and durability are the critical floating-solar IP metrics; KEY FTO CHECKLIST: Ciel & Terre Hydrelio HDPE pontoon float modular mounting (foundational inland); Sungrow Floating; Ocean Sun membrane direct-water-cooling near-shore/offshore; SolarDuck offshore triangular wave-following elevated platform; Oceans of Energy offshore North Sea; float/pontoon buoyancy/tilt/interconnection; variable-water-level mooring/anchoring; offshore wave-load/fatigue/dynamic-mooring survivability; marine electrical/cabling corrosion; water-cooling efficiency + bifacial; evaporation-reduction co-benefit; hydropower-reservoir hybrid shared grid; marine/aquaculture structure prior art.