This article is for those who want to understand the importance of timing: when is the right time to impose new standards and start/stop subsidies, to optimise the pathway to maximum efficiency? The light bulb transition of the last two decades is one of the successes of energy efficiency: from the old incandescents (15 lumens/watt) to halogen incandescents and CFLs, and then, finally, to LEDs (80 lumens/watt and prices falling 90% in ten years). … [Read more...]
Next-gen Solar farms that work at night, in the rain, and self-clean
With the worldwide roll-out of solar, raising the efficiency of energy conversion isn’t just about the materials science of PV cells. Douglas Broom, writing for the World Economic Forum, runs through three “add-on” innovations. Researchers have found a way to generate electricity in the dark as panels cool during the night. A low-cost thermoelectric generator works using the temperature difference between the cooling solar panels and the … [Read more...]
Critical minerals: price spikes are affecting Wind, Solar, Batteries, EVs
A wide range of critical minerals are needed for the energy transition. Tae-Yoon Kim at the IEA summarises the reasons why we should expect this to be a year of price spikes due in the main to the Russia-Ukraine war and post-lockdown supply chain bottlenecks. So severe is the problem that the long record of declining costs in clean energy technologies like solar, wind, batteries and electric vehicles is being reversed. Although these crises will … [Read more...]
Wellbeing peaks at just 75GJ per capita: a reachable target for poorer nations to rise to (and rich ones to fall to)
Energy consumption is strongly linked to health and wellbeing, in particular life expectancy, infant mortality, happiness, food supply, access to basic sanitation services and access to electricity. But as Josie Garthwaite at Stanford University explains, new research is saying that those improvements cease above a certain number of gigajoules per person per year. Knowing that number will make understanding and setting targets much easier. For a … [Read more...]
Buildings Renovation: if Europe had started a decade ago it wouldn’t have a Russian oil & gas problem
It’s a message we are starting to see a lot. If ambitious climate policies struggling to be implemented today had been launched a decade ago, Europe wouldn’t have a Russian oil and gas problem. Andreas RĂĽdinger at IDDRI looks at buildings renovations in France. Two missed targets, proposed in 2008, are a 38% reduction in energy consumption in existing buildings by 2020, and 400,000 “major” renovations annually. If they had been met, natural gas … [Read more...]
What is Energy Security? And what it isn’t
What is energy security? That’s what Maximilian Auffhammer at the Energy Institute at Haas asks and tries to answer, and he starts by saying what it is not and what solutions should not be used. Not importing won’t help because prices are global. “Energy security” can’t be taxed as an externality for much the same reason. Subsidising high prices for consumers decreases the value of energy efficiency investments. Instead, Auffhammer says the … [Read more...]
Factory-built energy-efficient modular affordable Housing for reducing lifecycle emissions
Building construction and operation accounts for 37% of global energy-related carbon emissions, according to the UNEP. And every part of the world needs new housing. The U.S. has a 3.8-million-unit housing shortage. Jeffrey Wolf, writing for NREL, describes how modular factory-made affordable net-zero housing is being developed that costs no more than existing construction methods. To get the greatest decarbonisation impact most cost-effectively, … [Read more...]
Smart households in a high Renewables world: flexible, efficient, cheaper
Smart controls can enable household heating and EVs to interact flexibly with increasingly decentralised electricity generation. As renewables continue to be added to the energy mix, it will increase efficiency, reduce load, and save money. Marco Reiser and Karoline Steinbacher at Guidehouse summarise the challenges and opportunities, before looking at the SINTEG pilot in Germany. The main hurdles are technological (standardisation, interfaces, … [Read more...]
Reducing Europe’s dependence on Russian Oil and Gas: immediate, short and long term strategy
Atlantic Council Global Energy Center experts and associates offer their template for drastically reducing Europe’s dependence on Russian oil and gas. It’s broken down into immediate, short (one to three years) and long term (beyond three years) actions. It’s wide-ranging and comprehensive. Some actions are already in play, including maximising gas storage, ready for next winter. Some are the ramping up of existing plans (clean energy, … [Read more...]
District Heating Roundtable: Policy across RED, EED and EPBD “must take account of conditions in all Member States”
Sara Stefanini provides a written summary of our panel discussion held on 10th February: District Heating under the "Fit for 55" package: challenges and opportunities. Under the “Fit for 55” package, the EC proposed several regulatory changes that, combined, are meant to decarbonise district heating in Europe. But are these options workable for all? The participants raise questions over the support for district heating, whether the multiple … [Read more...]
Lifting and lowering tons of bricks: the best storage solution for Wind and Solar intermittency?
It’s a high capacity storage system that’s simplicity itself. Use excess wind and solar to raise heavy weights. Keep them at a height for as long as you like. Lower them to generate electricity. James Conca looks at a system being developed by Energy Vault and already being demonstrated in the Swiss national grid. At scale, a single “vault” with 10,000 bricks will have an annual output of 27 GWh, sitting on only 14 acres of land. The bricks are … [Read more...]
Energy Storage to 2050: how it can support the grid 24/7 all year long
NREL is modelling grids with rising amounts of storage that captures excess wind and solar power to deliver it back during peak times. Storage capacity starts at around 10GW today and rises to hundreds by 2050. A range of increasingly complex system configurations and grid mixes are studied. The storage can gradually replace thermal peakers (fed with coal or gas but having GHG emissions, and expensive to start-up for peaking) as the grid gets … [Read more...]
Research into slowing lithium degradation can extend Battery life by 30%
The massive scale-up of batteries is essential to a successful transition. That will be made much easier if the lifetime of existing lithium batteries is greatly extended. With each charge-discharge cycle, the batteries accumulate tiny islands of inactive lithium that are cut off from the electrodes, decreasing the battery’s capacity to store charge. Jennifer Huber at the SLAC National Accelerator Laboratory explains how new research is showing a … [Read more...]
The right – and wrong – way to design a behind-the-meter Battery pilot
Here’s a story on how not to design a pilot project. The point of any pilot is to serve as the basis for larger rollouts. They should also be designed to maximise benefits. Joseph Daniel at the Union of Concerned Scientists describes how a U.S. utility in Michigan tried to create a pilot for behind-the-meter small-scale home storage. They wanted to invite anyone to apply to join. The problem was the likely applicants would be wealthy home owners. … [Read more...]
Synchronous condensers will stabilize the power grid as the Faroe Islands pivot to 100% green energy
The isolated Faroe Islands in the North Atlantic has an ambitious goal to become the world’s greenest group of islands. That means by 2030, SEV, the islands’ power utility, will be using 100% green electricity from hydropower, solar and wind and potentially tidal streams. As well as being an important climate change initiative, this will bring economic benefits as the Faroes will no longer rely on expensive fossil-fuel imports. However, … [Read more...]
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