Hybrid wind-solar generator for rooftop applications
French startup Wind my Roof has developed a new wind power system equipped with two rooftop PV modules. It is currently testing a prototype in Paris.
Brazil introduces new rules for hybrid power plants
The new provisions define clearly what hybrid power plants are and what kind of grid tariffs they should pay. The regulation may be particularly favorable for hybrid wind-solar plants, especially in North-Eastern Brazil, where the grid is not strong enough to support further renewable energy development.
A hybrid wind-solar-biogas sytem design including battery and thermal storage from PV modules’ excess heat
Tested in an off-grid location in India, the proposed approach includes the use of thermal storage from PV modules’ excess heat for space and water heating. The optimum configuration for the system was given by the combination of a 224 kW PV system equipped with a phase change material, a 206 kW wind turbine, a 420 kW biogas generator, a 633 Ah battery, and a 170 kW converter.
The world’s largest seawater heat pump based on CO2 as refrigerant
Swiss-headquartered technology corporation ABB is supplying integrated electrical infrastructure for the construction of a 50 MW seawater heat pump in Denmark. The heat pump technology will be provided by German specialist MAN Energy Solutions.
Mathematical model to couple PV, wind with cooling-heating-power systems
Brazilian researchers have proposed a new mathematical model to change parameters for wind and solar resources and different levels of energy demand. The model was originally conceived for tropical regions, but it can actually be used in any location. The new methodology models a highly complex system featuring wind turbines and PV modules, as well as solar collectors, fuel lines, gas boilers, engine-generator sets, recovery boilers, absorption and compression chillers, and grid electricity.
Using the oceans’ depths to store renewables, compress hydrogen
Underwater gravity energy storage has been proposed as an ideal solution for weekly energy storage, by an international group of scientists. The novel technology is considered an alternative to pumped-hydro storage for coasts and islands without mountains that are located close to deep waters, and may also be interesting for PV if used to store green hydrogen.
Hybrid wind-solar could make green ammonia cost-competitive in niche markets by 2030
According to a new study from the LUT University, hybrid wind-solar plants offer the ideal profile to reduce the costs of green ammonia. Although natural gas will be able to provide lower prices over this and the next decade, beyond 2040 ammonia generated by wind and solar may reach a price of between €300 and €330 per ton.
The Hydrogen Stream: 20 MW electrolyzer in Spain, hydrogen alliance between Russia and Germany
BP, Iberdrola and Enagás will power a 20 MW electrolyzer with 40 MW of solar in Spain. Automotive manufacturers Hyundai, Stellantis, Toyota and BMW sent a letter to European Commission Vice-President Frans Timmermans asking to support the continued expansion of a 700 bar hydrogen refuelling network in Europe.
The Hydrogen Stream: Offshore hydrogen pipeline and more electrolysis capacity in Germany
Big German conglomerates such as Siemens, RWE and Vattenfall keep pushing for green hydrogen development through different projects. Germany’s first offshore hydrogen pipeline is being planned by RWE itself, Shell, Gascade and Gasunie, and should be commissioned in 2035. Siemens is planning hydrogen projects in the 5 MW to 50 MW range, for industrial and mobility applications.
Mathematical model to couple pumped hydro with wind and solar in islands
An group of international scientists has developed a mathematical model to design hybrid renewable energy systems relying on pumped hydro storage for islands. According to their analysis, which was applied to the Ometepe island in Nicaragua, a similar system could provide a cost of energy ranging from €0.047/kWh to €0.095/kWh.
