Utrecht energizes vehicle-to-grid car sharing service
The Dutch municipality of Utrecht has become the first city in Europe to introduce a vehicle-to-grid (V2G) car-sharing service. It features Renault 5 E-Tech electric cars that run on clean energy and feed power back to grid the during peak-demand times.
Green hydrogen remains ‘prohibitively’ expensive in Africa
A European research team has assessed the levelized cost of hydrogen across 31 African countries and has concluded that importing green hydrogen from Africa to European is economically unfeasible by 2030, with prices ranging from $10.2/kg to $3.8/kg.
Optimizing endless PV-driven heat pump scenarios for costs, self-sufficiency
Researchers have used mixed-integer linear programming-based multi-objective optimization to optimize 30,912 unique scenarios showing heat pumps operating in combination with PV power. The optimization modeling was conducted under day-ahead spot market prices terms.
Novel MPPT technique uses fuzzy logic control with new inputs
Academics have developed a maximum power point tracking (MPPT) algorithm for PV systems that combines incremental conductance with fuzzy logic control. The inputs used are the sum of conductance and incremental conductance and its rate of change. It had an average efficiency of 97.7%.
Perovskite solar cell based on chalcogen-molecules achieves 25.37% efficiency
An international research team has used Lewis molecules to improve efficiency and stability of a perovskite solar cell built with a fully encapsulated trapping tactic aimed to reduce perovskite surface defects. The cell achieved a certified power conversion efficiency of 25.18% and a champion efficiency of 25.37%.
World’s largest 1 MW/100 MWh sand battery commissioned in Finland
Finnish startup Polar Night Energy has commissioned the world’s largest sand battery in Pornainen, southern Finland. The industrial-scale system delivers 1 MW of thermal power with 100 MWh storage capacity, covering up to a month’s summer heat demand and nearly a week’s winter demand for the local district heating network.
Avalon ST acquires PASAN to expand solar testing operations
Avalon ST, a Swiss LED-based solar simulation and metrology company, has acquired xenon-based solar simulator firm PASAN for an undisclosed sum. The companies will integrate operations and staff in Switzerland China, aiming to expand global reach and product innovation.
Evert launches wallbox with bidirectional EV charger, PV inverter
Evert has unveiled technical and availability details of its new power management unit, a wallbox that integrates a 22 kW bidirectional DC electric vehicle charger, a 20 kW PV inverter, and a home energy management system. The Norwegian startup targets residential users seeking integrated EV and solar energy solutions.
Repurposing unused satellite dishes into solar systems
Switzerland-based utility CKW has installed PV systems on disused satellite dishes at telecom company Leuk TDC’s headquarters, using SolarEdge’s DC-optimized inverters and power optimizers to maximize system output.
Irish solar records new monthly solar generation peak for May
Grid-scale solar accounted for 6.5% of electricity generated in May, with Ireland’s transmission system operator (TSO) EirGrid recording 173,163 MWh of solar output. Meanwhile, regulators are working to streamline the grid connection application process, a move welcomed by the solar industry.
