There’s a new world-record for two-junction solar cells, converting 32.9% of sunlight into electricity. Although it’s only a small improvement on the previous record of 32.8% it uses a design that should lead to even greater performance. NREL, in collaboration with the University of New South Wales (Australia), has built a cell consisting of a series of more than 150 ultrathin layers of alternating semiconductors that create quantum wells which … [Read more...]
Archives for January 2021
The Energy Charter Treaty makes the transition easier. Don’t scrap it, reform it
Energy and climate experts as well as national and EU parliamentarians are lining up to press their governments to withdraw from the Energy Charter Treaty (ECT) if insufficient progress is made in its modernisation. Their main argument is that it gives protection to fossil investments in a world where policies are changing in order to constrain or phase them out. Here, Frank Umbach at EUCERS sternly warns against abandoning the ECT. The treaty … [Read more...]
World’s biggest Steel manufacturers are committing to Hydrogen and CCS
The world’s leading steel makers have announced pledges to reduce emissions, aiming for net-zero by 2050 or sooner. They are committing to various new technologies still not proven at scale: making steel with hydrogen, and some with strategies that include carbon capture. They are putting their money where their mouth is. The list is impressive and includes ArcelorMittal (the world #1), ThyssenKrupp, Voestalpine, SSAB/LKAB/Vattenfall, Nippon … [Read more...]
New net-zero pledges from China, US, EU and others can meet our climate goals, says UNEP. But…
Existing national commitments imply that today’s emissions will simply plateau, remaining only slightly below 2019 levels by 2030. However, according to the latest UN Environment Programme (UNEP) emissions gap report, the new commitments from China, the EU, Japan, South Korea, the UK, Joe Biden’s US and others are “broadly consistent” with the Paris Agreement’s 1.5C goal for 2050. But commitments aren’t policy, warns UNEP, and only real change … [Read more...]
Coastal town Grande-Synthe took France to court over missed climate targets. How, why and what happens next
Taking your own government to court is an indispensable tool for sticking to our climate goals, says Lucien Chabason at the IDDRI. In November, the French State Council (Conseil d'État) gave an interim judgment largely favourable to the municipality/commune of Grande-Synthe following the government's implicit refusal to take additional measures to comply with the Paris Climate Agreement. Grande-Synthe sits on the coast by Dunkirk and is at … [Read more...]
Nuclear-Wind hybrid plants for grid stability, Power-to-X and more
How would you use a nuclear-wind hybrid plant and maximise its potential? When intermittent wind’s output falls, nuclear can step in to feed the grid. When it’s not doing that it can use its power to run the production of a wide range of commodities: from biofuels, hydrogen, pumped hydro to wastewater purification, desalination, chemical manufacturing and more – including straightforward thermal power for industry. In collaboration with NREL, the … [Read more...]
Nine advantages small-scale solutions have for reducing global emissions
Which is best? Spending your budget on a million 1 KW solar panels or a single 1 GW nuclear/hydro/gas plant? Lots of electric bikes or a single tram system? Lots of smart thermostats or whole-building retrofits? Charlie Wilson (University of East Anglia), Caroline Zimm (IIASA) and Simon De Stercke (Imperial College London) summarise their study that lists the advantages of small-scale “granular” solutions over large-scale “lumpy” ones. Granular … [Read more...]
The top Clean Energy developments of 2020
The world is still a long way off the pathway to meeting our emissions goals. But 2020 saw a number of major steps in the right direction. Laurie Stone at RMI presents a list of what has been achieved and which trends and new policy commitments are pointing us towards a much needed faster transition. They include coal’s decline, wind and solar’s growing competitiveness (even compared to gas), the promise of green hydrogen, bans on gas/petrol … [Read more...]