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...]
Jobs in the new clean energy economy: where are they, what are they, and how to find one
According to IEA figures, in 2019 the energy sector employed over 65m people, 2% of the global workforce. Half of that workforce is already in the clean energy sector, and demand for skilled employees is soaring. Whereas fossil jobs are heavily weighted to low skilled and very high skilled, most clean energy jobs are at the high end. Helena Uhde at Ea Energy Analyses looks at this new world, explains the differences, and notes that although … [Read more...]
Deep Geothermal: accessing 500°C for steam turbines. Can it make coal, gas, nuclear redundant?
The concept of “deep geothermal” is very simple. Dig deep enough, like 20km, to access a permanent reservoir of 500°C of heat. There, you generate the steam to power your turbines. The digging of a stable hole and getting the steam to the turbine is the big engineering challenge. But if you find a way that allows you to do it anywhere in the world (i.e. not limiting yourself to existing geological formations), nobody will ever need other … [Read more...]