Your monthly briefing on the journey to fossil freedom
Issue #20, Solar energy, February 2025
Photo: Olov Planthaber/Linköping University
Why perovskite is the buzz in the solar tech world
What to know: Perovskite is being hailed as the next big thing in solar technology – a material that promises versatility, cost-effectiveness and even higher efficiency than silicone solar cells. Scientists worldwide are exploring its potential to revolutionise solar energy, and call it
´thrilling´.
Why it matters: Traditional silicone solar cells are reliable, but are hitting their efficiency limits. Perovskite opens up possibilities for lighter, thinner – also more colourful – and potentially more recyclable solar solutions. But there are still hurdles including stability and lead content, for scientists to get over.
Photo: Vattenfall
How the small island Arholma took a big leap in energy independence
A groundbreaking microgrid is now enabling the stunning island of Arholma in the Stockholm Archipelago to operate independently from the mainland. Powered by solar panels, batteries, and advanced real-time control software, the system seamlessly switches to ´island mode´ during outages, keeping its 250 residents connected without interruption – and setting a new benchmark for resilient and sustainable energy solutions.
New report: Fossil-free living in Europe
Which innovations have European homeowners invested in, or would consider investing in, to reduce energy consumption? A Vattenfall report that explores consumer attitudes and actions around climate-friendly lifestyles in Sweden, Finland, Germany, the Netherlands, France, and Great Britain, reveals some interesting trends: insulation leads the way, with batteries gaining momentum.
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Germany: A hotspot for combining solar and farming
Photo: Vattenfall
Vattenfall is rapidly scaling up solar in Germany. The target is to add 500 megawatts of solar power annually, always in combination with large battery storage, and in many cases also with sheep, chicken or other types of farming.
News flash
3 x quick updates from the energy world
Solar surge (with shadows) in Pakistan
The solar power boom in Pakistan has been a boon for renewable energy production, making the country the world’s sixth-largest solar market. But it has also strained state finances. (weforum.org)
Zolar power
In Zanzibar, women are leading the way in electrifying the country with solar power. Funded by the government, the "solar mamas" have been trained to become technicians and install solar panels in households. (theguardian.com)
EU goes geo
Geothermal energy has the potential to meet three-quarters of EU heating and cooling needs – but only accounts for three per cent. All EU countries are now urging the Commission to launch projects to replace Russian gas. (reuters.com)
And finally …
What the frog?
What’s life like in Chernobyl, 40 years after the catastrophic reactor accident? While there are still traces of radiation around the nuclear power plant, levels have fallen significantly and a nature reserve has emerged in the area. The Conversation reports that adaptation to the post-meltdown environment has been remarkably successful for one species in particular: frogs.
