25 countries plus the EU have announced big ambitions for renewable hydrogen production. But how much renewable energy will be needed to make the H2 over the next five years? Nations are not keen to expend new clean energy generation on (expensive today) hydrogen production when their grids are still not emissions-free. According to the IEA, for 2022-2027, their main case forecasts around 50GW of renewable capacity will be dedicated to hydrogen … [Read more...]
10,000 sq km of Solar in the Sahara could provide all the world’s energy needs
A little over 10 years ago David MacKay drew attention by saying “All the world’s power could be provided by a square 100km by 100km area in the Sahara.” Furthermore, MacKay’s calculation of the full potential of the region’s Concentrated Solar Power (CSP) totalled 25 times the TWh/year the world uses today. That was looking at the Middle East and North Africa’s (MENA) high solar irradiance, ample available land and the technologies of the day. … [Read more...]
