Articles written by Ralph Diermann

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Agri-Photovoltaik:: Ackerpflanzen vertragen Beschattung gut
Study finds arable crops adapt surprisingly well to agrivoltaic shading A study by the University of Hohenheim found that barley, maize, cabbage, potatoes, and field beans can adapt their photosynthesis to partial shading in agrivoltaic systems. The findings suggest greater shade tolerance than previously assumed, although the physiological adaptations do not necessarily result in higher yields.
Ralph Diermann
Aug 19, 2026
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SunEnergyXT launches AC-coupled battery for existing PV systems SunEnergyXT has launched the SunEnergyXT 500 PRO AC Core, an AC-coupled battery storage system designed for existing PV installations without replacing the inverter. The modular LFP system offers 5 kWh per master unit, scalable to 90 kWh, with smart-home integration, backup power and a 10-year warranty.
Ralph Diermann
Aug 13, 2026
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Weidmüller unveils new PV connectors Weidmüller has introduced a tool-free PV-Stick connection system designed to simplify and speed up photovoltaic installations while ensuring reliable connections up to 1,500 V DC.
Ralph Diermann
Aug 12, 2026
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New online map shows Germany’s renewable energy feed-in capacity across distribution grids A new free online map details renewable energy and storage systems connected to Germany’s 871 distribution grids, with data updated every six months.
Ralph Diermann
Aug 12, 2026
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German battery manufacturer files for self-administered insolvency German battery manufacturer Varta has filed for self-administered insolvency, with the proceedings covering its solar-storage and energy management business.
Ralph Diermann
Jul 29, 2026
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Germany wraps up solar-plus-storage tender with average price of €0.0534/kWh Germany has concluded a new renewables tender for innovative projects, securing 482 MW of capacity at final prices ranging from €0.0475 ($0.0540)/kWh to €0.0559/kWh.
Ralph Diermann
Jun 26, 2026
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Swiss power distributors allowed to remunerate solar power at market rates Switzerland will allow grid operators to remunerate photovoltaic electricity at real-time market prices from 2027, aiming to better align solar feed-in with demand. Small PV systems will be protected by a minimum remuneration premium, while storage and local consumption are expected to become more important under the new model.
Ralph Diermann
May 28, 2026
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European PV avoided €10 billion in gas imports since escalation of Iran conflict European photovoltaics have generated enough electricity since early March to avoid an estimated €10 billion in gas imports, according to SolarPower Europe, with savings averaging €110 million per day.
Ralph Diermann
May 21, 2026
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EVs equipped with vehicle-integrated PV could cover up to 80% of their electricity needs A research project led by Fraunhofer Institute for Solar Energy Systems ISE has demonstrated that vehicle-integrated photovoltaics (VIPV) can significantly reduce strain on power grids. The concept is particularly relevant for the logistics sector, where trucks require large amounts of electricity for cooling, heating and auxiliary systems, while also offering extensive roof space for PV integration.
Ralph Diermann
May 20, 2026