INSPIRATION
Hydro power is the energy derived from moving water. Unlike solar and wind, hydro energy is predictable and,hence, more reliable. Besides, hydroelectric dams, as well as ocean-based energy harnessed from tides, currents, and waves, offer high energy density while reducing dependency on conventional sources. The innovations in these renewable sources focus on energy converters and component improvements for harvesting energy more efficiently. Within hydropower, small-scale hydroelectric dams and tidal barrages enable decentralized energy generation. Ocean thermal energy conversion (OETC) harnesses energy through the thermal gradient created between the surface and deep water. Few startups are also converting the salinity gradient formed due to the osmotic pressure difference between seawater and river into usable energy.
Seabased is an Irish startup that develops modular wave energy converters. These WECs are buoys on the surface connected with linear generators resting on the seabed. The moving waves provide energy to the buoys thereby generating electric power. The startup’s patented switchgear converts the power into electricity for grid use. Moreover, the WECs can withstand harsh seas, enabling a flexible wave park expansion with high efficiency. Seabased’s solutions, thus, allow energy offshore companies and local coastal communities to generate wave energy as an alternative or hybrid to wind.
Iranian startup GED Company offers microturbines for distributed generation of hydroelectricity from water streams like canals and rivers. The startup’s floating drum turbine (FDT) consists of an undershot waterwheel that floats on the water stream using a buoyant skid and is anchored with cables or hinged arms. The rotation of FDT by the stream produces electricity. The solution is low-cost, efficient, and ensures reliable distributed generation for electrification in remote and underdeveloped locations.
