The Interior Department said on Wednesday that it would pay the energy developer Invenergy hundreds of millions of dollars
to abandon plans to build wind farms in the Atlantic and Pacific,
in the third such deal struck by the Trump administration to cancel offshore wind leases.
Under the agreement Invenergy will voluntarily surrender four leases in federal waters for wind farms that would have been located in the New York Bight, off the Central Coast of California and in th…
Australia's renewable energy push just got a massive boost. RWE has locked in a contract for the 1.1GW Theodore Wind Farm in Central Queensland—up to 170 turbines plus battery storage that will power around 500,000 homes.
Construction kicks off later this year with 500 jobs at peak. It's one of 19 projects racing toward 2030's goal: cleaner, cheaper power for 4 million households.
Australia just approved its largest wind farm ever. The Warracknabeal Energy Park will feature 219 turbines generating over 1.5 gigawatts of clean power, plus battery storage to keep the lights on when the wind stops. The $5 billion project will create nearly 950 construction jobs in Victoria's Wimmera region and help the state hit its renewable energy targets.
Tata steel, IJmuiden. Depending on your point of view it's dystopian or hopeful. The turning wind turbines over the steel works a reminder that electrify everything is the easy part - industrial process the hard part of the #GreenTransition
Energy storage is hard. It's also necessary to pair with many #renewable sources like solar, wind, and tidal, which do not provide continuous power. There are a few ways to do it, such as salt pits to store heat and pumping water uphill for hydroelectric power on demand. Now there's one more: lifting concrete slabs and then lowering them to spin turbines:
A High-Order Flux Reconstruction Actuator-Line Framework for Rotating-Blade Aerodynamics on Fixed Cartesian Grids
Abdullah Al Imran, Meilin Yu
https://arxiv.org/abs/2607.20347 https://arxiv.org/pdf/2607.20347 https://arxiv.org/html/2607.20347
arXiv:2607.20347v1 Announce Type: new
Abstract: This work couples a high-order flux reconstruction/correction procedure via reconstruction (FR/CPR) solver with a rotating actuator-line model (ALM) to simulate rotating-blade aerodynamics on fixed Cartesian grids. Blade loading is represented by volumetric body force source terms projected through an isotropic Gaussian kernel in a blade-attached frame, eliminating the need to resolve blade geometry. Vertical-axis wind turbines (VAWTs) serve as the demonstration configuration, with a modified Boeing-Vertol dynamic stall model incorporated to capture unsteady lift and drag. A mesh-resolution criterion for the Gaussian projection kernel on reasonably coarse meshes is derived. It shows that cost-effective coarse meshes can operate in a mesh-controlled regime with negligible induction feedback, motivating a Double Multiple Streamtube (DMST) correction to recover the physical inflow. Simulations are carried out over a range of tip-speed ratios at a chord-based Reynolds number of Re_c ~ 3.6 x 10^5. The framework is validated against experimental near-wake measurements and previously reported LES-ALM results, and the mean wake profile shows good agreement. The predicted power-coefficient curve matches high-fidelity three-dimensional LES-ALM data to within 6% around the optimal VAWT operation conditions. The framework also captures the regime-dependent influence of dynamic stall, azimuthal blade loading, lift hysteresis, and characteristic wake structures. These results demonstrate that the FR/CPR-ALM framework provides an accurate and computationally efficient geometry-free approach for VAWT analysis, making it well suited for parametric studies and large-scale wind energy applications.
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