It looks brilliantly simple. Why are onshore wind turbines smaller than offshore ones? Because you have to move them to their location by road, over bridges, through tunnels and around curves. That limits their size. As Michael Purton, writing for WEF, explains it’s why the company Radia is building the world’s biggest aeroplane called WindRunner (12 times the volume of a Boeing 747), big enough to carry turbine blades over 100m long. And the … [Read more...]
Forecasting the performance of new Solar PV module technologies over 20, 30, and 50 years
Solar PV technology continues to innovate and evolve at a rapid pace. Testing the modules is essential for predicting durability and future performance. But that inevitably means past experience is not a good predictor of the behaviour of the new materials and configurations. Sara Fall and Harrison Dreves at NREL explain how the Durable Module Materials (DuraMAT) Consortium has set up sophisticated testing and data gathering to use the … [Read more...]
New “Solar Thermal Trapping” process can generate 1,000°C for steel, aluminium and cement production
Many industries – production of steel, aluminium and cement being the most obvious – require high heat processes that today can only be achieved commercially using fossil fuels. Paige Bennett at EcoWatch, writing for WEF, describes a new process using solar thermal trapping to reach temperatures of a little over 1,000°C, hot enough to smelt metal. Scientists used semi-transparent materials, including synthetic quartz, to capture sunlight that … [Read more...]
At $2tn, investment in Clean Energy in 2024 is set to be double that for Fossil Fuels
A new report by the IEA reveals that global spending on clean energy technologies and infrastructure is on track to hit $2tn in 2024, driven largely by attractive cost reductions, improving supply chains, energy security, and government policies. This is despite higher financing costs for new projects. The combined investment in renewable power and grids only recently overtook the amount spent on fossil fuels, in 2023. 2024 will see it at double … [Read more...]
New Concentrated Solar Power system delivers 1,000°C for industrial processes + more
Zach Winn at MIT describes a new method of building high-temperature concentrated solar power systems. The solar receiver heats air to around 1,000°C at atmospheric pressure. The system circulates the hot air with no combustion or emissions to drive a turbine. The system can deliver daytime power and overnight thermal energy storage to provide round-the-clock power. More interestingly, it can provide industrial-grade heat. It’s being … [Read more...]
China’s plans for large-scale Offshore Solar
If offshore wind, why not offshore solar? It’s been talked about for a while and implemented on a small scale in places like Norway. You Xiaoying, writing for Dialogue Earth (formerly China Dialogue), looks at China’s efforts to establish it as a new and – once scaled up - major contributor to the energy transition. The main advantages over land-based solar are clear: large spaces of land must be found, they’re not usually near population or … [Read more...]
The benefits of Vertical-Axis Wind Turbines: omnidirectional, close-packed, easier to maintain + more
Most wind turbines are “horizontal axis,” pointing into the direction of the wind. “Vertical axis” turbines can capture wind energy from any direction, but current designs are less efficient and so get little attention and investment. Andrea Montanari at ECECP looks at innovative companies around the world that are trying to leverage the other advantages they have over the dominant horizontal versions. They are more stable (lower centre of … [Read more...]
10% of global GDP growth came from the new Clean Energy economy in 2023
The clean energy economy is making its mark on global GDP, explain Laura Cozzi, Timur GĂĽl, Thomas Spencer and Peter Levi at the IEA. It accounted for 10% of global GDP growth in 2023, primarily through three activities: manufacturing of clean energy technologies, deployment of clean power capacity, and clean equipment sales. Here, the authors present the in-depth results for four of the largest economies: the U.S, the EU, China and India, which … [Read more...]
Can the six Gulf nations meet their ambitious Renewables deployment plans by 2030?
The six Gulf Cooperation Council (GCC) countries (Bahrain, Kuwait, Oman, Qatar, Saudi Arabi, UAE) have all set themselves ambitious renewable energy targets to meet in the next ten years. They are some of the sunniest countries in the world, and existing projects have set records for low solar power costs. But they have a long way to go. In 2022, GCC renewable capacity was 5.7GW, primarily solar PV, out of 165GW of total generating capacity, … [Read more...]
Explainer: The EU’s Green Deal Industrial Plan
Here, the Florence School of Regulation (FSR) provides a summary of the Green Deal Industrial Plan. It’s broken up into: What is the Green Deal Industrial Plan? What are critical raw materials and why do they matter? Where is the EU currently standing on critical raw materials? What is the EU doing about critical raw materials? Where is the EU currently standing on clean tech? How is the EU attempting to boost its domestic clean tech sector? Can … [Read more...]
Study: will sight of a Wind Turbine reduce your property prices?
Onshore wind turbines have a permitting problem in the U.S. and Europe. One main complaint from homeowners is that they believe the sight of a turbine will reduce their property value. Maximilian Auffhammer at the Energy Institute at Haas describes his co-authored published study that tests this assumption. The study looks at sale prices of over 300m homes in the U.S. within 10km of a turbine, sold between 1990 and before COVID hit. The clever … [Read more...]
Who is winning the Clean Energy race between China, Europe, and the US?
“X-Change: The Race to the Top” is the fourth report of an RMI series that reviews the cleantech competition between China, Europe, and the US. Kingsmill Bond, Sam Butler-Sloss and Daan Walter at RMI summarise the findings of the latest report, along with six charts, which focuses on four areas: clean technology supply chains, solar and wind deployment, EV sales, and electrification. Solar and wind deployment is still a close contest. But China … [Read more...]
New Offshore Wind projects: is permitting being slowed by evidence from “grey literature”?
Offshore wind is the new frontier of clean energy generation. The permitting process depends on policymakers’ evaluation of the impact assessment evidence. As Claire Szostek at the Plymouth Marine Laboratory explains, that evidence has two sources: primary and “grey” literature. “Primary literature” comes from structured peer-reviewed scientific journals. “Grey literature” includes all other types of reports and evidence published freely. The … [Read more...]
Solar PV technology improvements are rapid. But how do you test the long-term reliability of the new designs?
Solar PV module technology moves fast, and is delivering improvements continuously. So fast that it’s no trivial matter to judge the long-term reliability of the changes. It’s a crucial issue as modules, once deployed, are expected to deliver results over lifetimes that span decades. Sara Fall and Jarett Zuboy at NREL describes a process designed to identify and address potential reliability problems quickly, before they are observed in the … [Read more...]
Tomorrow’s deep water Floating Wind Turbines: the six main design categories explained
The new frontier of offshore wind power is floating wind turbines. That’s because they can be installed in deep water where wind speeds are consistently higher. The new designs have the floating turbines, that bob and sway with the waves and wind, stabilised with ballast or anchored with chains to the seafloor. Emma Edwards at Oxford University looks at the six major categories of design: Spar, Barge, Tension-leg platform, Semi-submersible, … [Read more...]
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