Greece now interconnected with Crete via 1 GW transmission line
A 1 GW direct current (DC) transmission line linking mainland Greece to Crete has entered trial operation, with full commercial service expected by September to support new green power capacity and future interconnections with Cyprus, Israel and Egypt.
Supercharging pumped-hydro stations with floating PV
Scientists have simulated the addition of floating solar panels to Switzerland’s Etzelwerk, an open-loop pumped-storage hydropower plant. Using 10% of the upper reservoir for the solar panels, the research team was able to add about 20% of the energy output.
UK startup unveils industrial batteries based on repurposed EV battery packs
Allye Energy has launched two new battery storage systems that can provide 820 kW and 1.25 MW of power, respectively. The systems combine up to 18 repurposed EV battery packs with mixed chemistries.
Optimizing Carnot batteries for renewables storage
Based on the the heat pump-organic rankine cycle, scientists in Portugal have created six different models of Carnot batteries for stationary storage. They investigated 16 different combinations of working fluids and created a multi-objective optimization for the best candidate.
SolarPower Europe calls for tough cyber rules following Danish import probe
The recent discovery of unexplained components in Danish energy equipment highlights the urgent need for stronger EU solar cybersecurity rules, according to SolarPower Europe.
A critical moment for Brazilian energy storage
A national procurement round for energy storage systems, planned in the second half of the year, is at risk of lengthy delay just as the grid operator is being forced to curtail large volumes of excess clean electricity.
WoodMac tips Australia to fall short of 82% renewables goal
Wood Mackenzie predicts Australia will fall well short of its target of 82% renewable generation by 2030 due to grid connection delays, inadequate investment, and moves from some state governments to scale back their clean energy ambitions.
Canadian Solar fund reports April shortfall amid Japan curtailments
Canadian Solar Infrastructure Fund says April output fell 10.2% below forecast across its Japan portfolio due to increased grid curtailments, especially on the island of Kyushu.
Net electricity prices for end customers fall below zero for first time in Germany
As PV and wind power plants caused a significant oversupply on May 11, the electricity price fell to a low of minus €250 per megawatt-hour. Charging PV storage systems or electric cars during these hours thus generated income for customers with dynamic electricity tariffs between 12 pm and 3 pm.
Flexibility options are a central concept for highly renewable energy systems research
To address the variability of renewable energy for a stable supply, 22 distinct types of flexibility options are found in 100% renewable energy systems research articles, categorized into power-to-X, energy storage, demand response, transmission and distribution grids, and curtailment.
