District heating networks, an important part of the energy transition for buildings, need a way of storing intermittent wind and solar power. But water tanks have limits: they take up a lot of space, and have a low thermal energy storage density (limited by the 100°C boiling point). Molten salts have a much higher storage density (regular table salt has a melting point of 801°C), but a melting point that is too high is not safe where ordinary … [Read more...]
EU Energy Outlook to 2060: power prices and revenues predicted for wind, solar, gas, hydrogen + more
Huangluolun Zhou, Elena Dahlem and Alex Schmitt at Energy Brainpool present their updated “EU Energy Outlook 2060”, modelling how the European energy system will undergo major changes in the coming decades while continuing to guarantee a secure supply and meet its climate targets. What do these developments mean for power prices, revenue potential and risks for solar PV and wind? The two main scenarios are “Central” and “GoHydrogen” for the EU 27 … [Read more...]
Thermal Energy Storage for heating and cooling Buildings: finding materials that melt at room temperature
Thermal Energy Storage (TES) in individual buildings can cut heating and cooling costs while delivering grid stability, explains Ryan Horns writing for NREL. Back in the 1800s blocks of ice were shipped to cities to cool buildings down. Today, research is underway to identify materials that can be heated or cooled by excess grid power and release or absorb heat when needed. Similarly, materials are being researched and developed that “phase … [Read more...]
Europe’s big Hydrogen ambitions won’t deliver. Stick to ammonia-fertiliser, refining, shipping, aviation (maybe later)
Europe’s hydrogen ambitions need a reality check. The EU’s goal to produce and import 20m tonnes of clean hydrogen by 2030 is now widely seen as completely unrealistic, says William Todts at T&E. The business case is not good enough because of the high costs that aren’t coming down as hoped. It’s why only 4% of hydrogen projects get financed. Far better to focus on no regrets, low infrastructure hydrogen applications for ammonia-fertiliser, … [Read more...]
Event summary: “Bioenergy after REDIII – sustainable, climate neutral fuels for industry, transport and negative emissions”
Sara Stefanini provides a written summary of our panel discussion held on Wednesday 4th October 2023. It’s a full summary of the 75 minute discussion, and begins conveniently with a summary of the highlights. Under the recently revised Renewable Energy Directive (REDIII) bioenergy can be counted towards the renewable energy targets – provided that it meets strict sustainability criteria. Bioenergy already accounts for 60% of the EU’s renewable … [Read more...]
First-of-a-kind U.S. utility pilots community Geothermal to cut emissions and bills
For the first time in the U.S. a utility is piloting a community geothermal project to heat and cool 40 buildings and cut customers’ bills. Success will lead to scale up and replication, explains Adele Peters writing for the World Economic Forum. The case for community geothermal is very strong. Though geothermal’s up-front costs of installing pipes deep underground are high, running costs are low. The pilot, in Framingham (Massachusetts), will … [Read more...]
Germany to ramp up the decarbonisation of Buildings Heating from Jan 1st 2024. How?
Decarbonising heating is a major challenge for any country. Germany’s Building Energy Act (GEG) means that from 2024 every newly installed heating system, in new or existing buildings, must operate with a minimum of 65% renewable energy. Concerns over the costs to customers (installing new and expensive systems, or paying a penalty for fossil heating) has led to intense debates, hence the new law includes a range of subsidies, bonuses, discounted … [Read more...]
Buildings Efficiency: cars have an “eco mode” button. Why not our homes?
Households need the right tools to be able to take control of their real-time energy consumption, says Maximilian Auffhammer at the Energy Institute at Haas. Smart meters are just too crude. They don’t tell you how much energy individual devices are using – fridges, ovens, heaters, EV chargers, TVs, lightbulbs, toasters, etc. You have to work it out yourself by switching devices on and off and seeing the difference. Auffhammer argues if you price … [Read more...]
Power to the people: citizen-centred Just Transitions challenge energy system centralisation
EU Member States need to phase-out coal and transform their carbon-intensive industries to make Europe climate-neutral. However, these should not be the only goals: transparency and justice must also accompany this path, argue Diana SĂĽsser at IEECP, Serafeim Michas at TEESlab and Ricardo Antonio GarcĂa Mira at the University of A Coruna. As Member States implement their territorial just transition plans, they must ensure they benefit affected … [Read more...]
U.S. Heat Pump adoption is evenly spread across rich and poor. Surprised?
The problem with subsidising first-adopters of new technologies is that they can substantially benefit rich households. They’re the ones who buy the first EVs, rooftop solar, etc. Lucas Davis at the Haas School of Business presents data that shows that, in the U.S., heat pumps are being bought evenly across the income distribution. This is a surprise, not least to the author! Nationwide, 15% of households have a heat pump as their primary heating … [Read more...]
Germany’s proposed de facto ban on new fossil boilers from 2024 meets fierce resistance
Like many nations, Germany is struggling to find a way to replace fossil fuel-powered boilers in millions of homes and buildings with heat pumps and other cleaner alternatives. Heating accounts for a whopping 15% of the country’s emissions. As Sören Amelang at CLEW explains, the up-front cost of a new clean heater can be double that of existing mass-produced fossil equivalent, so home owners are resistant. In 2022, two thirds of all new heating … [Read more...]
Green District Heating: can the energy crisis + new carbon targets drive new investment?
Rebecca Pool, writing for ESCI, describes green district heating projects where the operator is a “middle man” between new energy generators (waste heat, renewables, etc.) and end users. The energy crisis has created an opportunity, as unpredictable gas prices combined with new carbon targets have made the long-term investment more attractive. But district heating is in direct competition from heat pumps and natural gas, so it needs to be price … [Read more...]
Geothermal Heat Pumps: can new U.S. “IRA” support make it go mainstream?
Biden’s Inflation Reduction Act in the U.S. is meant to drive forward the best clean energy solutions. To help make sure geothermal heat pumps play their fullest role, RMI has done a study of its benefits as well as published guides on how developers can take advantage of the various new laws and support mechanisms. Lauren Reeg, Mike Henchen, Chris Potter and Chris Stone at RMI start with a summary of the technology and its applications, before … [Read more...]
IEA’s global “CO2 Emissions in 2022” report: by sector, fuel, region, heating +more
The IEA has published “CO2 Emissions in 2022”, giving estimates of CO2 emissions from all energy sources and industrial processes globally. Emissions from energy combustion increased by 423 Mt, while emissions from industrial processes decreased by 102 Mt. Emissions from various sources (sector, fuel, region, heating, etc.) are broken down, with reasons for why the change happened. The report is part of the IEA’s first global stocktake of the … [Read more...]
Buildings “Energy Performance Certificates”: piloting new tools to ramp up renovations
In Europe, any building put up for sale or rent must have an Energy Performance Certificate (EPC). But as climate ambitions rise, so too must the those of the EPC. That's the purpose of the TIMEPAC consortium, funded by the EU’s Horizon programme, is working to extend its effectiveness and range of tools, explains Patricia Contreras Tejada writing for the European Science Communication Institute (ESCI). She quotes experts who point out that a low … [Read more...]
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