Laboratories around the world are racing to make printable perovskite solar cells, produced in abundance and so thin they can be wrapped around almost anything. Itâs a huge advantage over the typical silicon cell that is relatively big and fragile. And perovskite is much less expensive to produce. David Beynon at Swansea University describes research there that has demonstrated how a roll of plastic film can be loaded into a printing press to … [Read more...]
âRebound Effectâ: cheap LEDs mean more lights everywhere. But brighter homes, offices and public spaces are worth having
LEDs are 90% more efficient than modern incandescent bulbs. Their rapid uptake has resulted in measurable cuts in energy demand and emissions. But their plummeting cost over the last ten years is also causing a ârebound effectâ where people are using more and more LEDs, not least for outdoor lighting. Lucas Davis at the Haas School of Business believes we must embrace it, even if itâs counter to maximising energy savings. More and brighter … [Read more...]
Will the computing power needed for self-driving cars create a carbon emissions problem akin to data centres?
Few predicted, in their early days, that the scale-up of data centres would result in them having a measurable impact on global energy consumption. Today they contribute 0.3% of global emissions. Thatâs a big enough number to put it on the global radar and for the IEA to be monitoring it. Will the wide scale take-up of autonomous vehicles have the same effect? Yes, explains Adam Zewe at MIT who describes new research from there. In summary, one … [Read more...]
Virtual Power Plants: efficiently networked households wonât need new expensive generation
Virtual Power Plants (VPPs) are the next new innovation that can change the landscape of the global energy transition in our favour, cheaply and fast, explain Liza Martin and Kevin Brehm at RMI. Essentially, they link and aggregate hundreds of thousands of households and businesses to manage their electrical devices. Their thermostats, EVs, appliances, batteries, and rooftop solar arrays are coordinated to ensure loads, charging and discharging … [Read more...]
How to sell Heat Pumps to the public in Europe
In EU households, 62.8% of energy consumption is for space heating, and another 15.1% for water heating, mostly powered by fossil fuels. Heating and cooling is responsible for 52% of final energy demand in Europe. So, with REPowerEU, the EU has once again strengthened support for heat pumps to achieve energy independence and climate goals. Heat pump sales in Europe grew by an unprecedented 34% in 2021, thanks to a total 2.18m heat pump units … [Read more...]
30+ nations now subsidise Heat Pumps because lifetime cost is cheaper than fossil boilers
The global growth in heat pumps can deliver almost 40% of all possible emissions cuts from heating by 2030 (with most of the rest coming from efficiency, mainly insulation), says the IEA. This is according to their âAnnounced Pledges Scenarioâ (APS) which assumes that governments carry out all of the climate commitments they have made. Keeping buildings warm produces one-tenth of global energy-related CO2 emissions. So the APSâs heat pump growth … [Read more...]
Doubling clean energy investments from ânaturalâ redirection of existing spend on infrastructure, buildings, fossils +more
Annual investments in clean energy stand at $1.4tn, now greater than investments in fossil fuels ($1tn). But that needs to double by 2030. This steep climb will be made easier by the natural cycle of global investment, as well as the cost-benefits of abandoning fossil fuels for renewables and greater efficiencies, says Stephen Peake at The Open University. Each year, around a quarter of our GDP is anyway spent on new machinery, buildings and … [Read more...]
Distribution Grid Digitalisation – benefits, policy, cost & funding
About a third of European grids are over 40 years old. A rapid physical overhaul would be impossible, so the addition of a layer of digital technologies is the key to preparing them for the distributed and intermittent generation from renewable sources, the increased electricity demand from transportation, heat pumps and other sectors, and for ensuring energy efficiency at all levels. Itâs why the EC expects about âŹ584bn of investment in Europeâs … [Read more...]
Comparing the efficiency and progress of the 5 leading Solar PV cell technologies
NRELâs âBest Research-Cell Efficiency Chartâ allows researchers to easily compare the performance of specific PV technologies, stretching back 50 years. Itâs regularly updated and is free to use, explains Wayne Hicks and Harrison Dreves at NREL. A new âinteractiveâ version is now available. The focus is on crystalline silicon cells, single-junction gallium arsenide cells, multijunction cells, thin films, and emerging PV. For example, you can … [Read more...]
What was Europeâs dependence on gas prior to Russiaâs invasion of Ukraine?
### REGISTER NOW ### for our vitally important 2-panel event âThe Energy Crisis and Russian Aggression Against Ukraine â Key Challenges for the Central European Energy Sectorâ, on Thursday December 8, 13:00 â 17:00 CET (Address: Rue Belliard 40, 1040 Brussels). High-profile confirmed speakers include Kadri Simson, European Commissioner for Energy, EC; Leszek JesieĆ, Chairman of the Board, CEEP; Jerzy Buzek, MEP and former president of the … [Read more...]
Solar PV windows on highly glazed skyscrapers can cut energy by 40%+
Around a third of the worldâs energy consumption and CO2 emissions come from buildings. Highly glazed skyscrapers and buildings may look beautiful and let in plenty of light, but waste a lot of energy due to the extra cooling needed in summer and heating in winter. Modern skyscrapers can have window-to-wall ratios of 70%+. But modern thermally efficient photovoltaic windows not only provide insulation but turn the absorbed light into power. Wayne … [Read more...]
Tools to design energy systems resilient to natural disasters: from small villages to big cities
There is little doubt that emissions reduction will not be enough to cope with climate change. Adaptation will be essential too. Connor OâNeil and Moriah Petty at NREL describe how the National Renewable Energy Laboratory is developing free-to-use tools to help configure and create energy systems that are resilient to natural disasters. The tools have already been applied to small and large populations, ranging from a 500-person town to big … [Read more...]
Investing in Hydrogen: is there a âfirst mover advantageâ?
Is there a âfirst mover advantageâ â or not - for an investor in the new hydrogen economy? Michiel Korthals Altes offers a series of âtestsâ of investment decisions based on the following criteria: economics, climate efficiency, system optimum, price stability, regulation, technology, now and in the future. He concludes that until the sector reaches maturity, conversion inefficiencies make the production of hydrogen a poor choice for most … [Read more...]
Pollution costs are driving U.S. states to look for alternatives to Gas-Fired Plants
In the U.S. a growing number of states and regulators are directing utilities to look for alternatives to proposed gas-fired power plants, citing environmental justice and community health impacts, explain Caitlin Odom and Lauren Shwisberg at RMI. So itâs not just about emissions: pollution matters too. The authors quote studies that show clean energy portfolios (CEPs) not only reduce energy costs, but can save billions of dollars in community … [Read more...]
Energy Security: what if the UK government had not âcut the green crapâ from 2013
The UK provides an example of a government that cut back its green ambitions only to see its energy security suffer. In 2013, then-prime minister David Cameron told his ministers to âcut the green crapâ. That led successive governments to downgrade home energy efficiency, requirements for new homes to be âzero carbonâ, end subsidies for onshore wind and solar, and effectively ban onshore wind in England. What if the UK had stayed on its … [Read more...]
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