In a world first project, tidal power is set to be combined with vanadium flow batteries to produce continuous green hydrogen. The project will be located on the island of Eday, Orkney, at the European Marine Energy Centre’s (EMEC) tidal energy test site, with a 1.8MWh flow battery from Invinity Energy Systems installed to help “smooth” tidal generation. While tidal generation is predictable, it is variable with two high tides and two low a day. This makes it an extremely heavy cycling application, which can be very hard on conventional lithium-ion batteries, degrading them much faster than when they are used with technologies like solar PV. This makes Invinitiy’s vanadium flow batteries much better suited, according to the company, as they are able to form heavy duty, stationary energy storage for high-utilisation and industrial applications. The Eday site will consist of eight Invinity VS3 battery modules linked together into a single system, which will be constructed at the company’s manufacturing facility in Bathgate, West Lothian.
Current 11th Nov 2020 read more »
Green hydrogen sidelined as blue hydrogen is set for green light. The oil and gas industry is poised to gain several tens of millions of pounds for what will turn out to be mainly a license to carry on generating carbon dioxide. A flagship ‘blue hydrogen’ scheme, that is one involving production of hydrogen from natural gas and removing part of the carbon dioxide, is to be launched on Humberside if a consortium receives £75 million from the Government. According to Bioenergy International ‘The project will be located at Saltend Chemicals Park near the city of Hull and its initial phase comprises a 600 MW auto thermal reformer (ATR) with carbon capture, the largest plant of its kind in the world, to convert natural gas to hydrogen…..It will enable industrial customers in the Park to fully switch over to hydrogen, and the power plant in the Park to move to a 30 percent hydrogen to natural gas blend.’ The oil and gas industry claims that blue hydrogen production will somehow help green hydrogen (produced when renewable electricity electrolyses water). Yet, because of the relatively small size of the hydrogen market. the reality is that the blue hydrogen production will squeeze out green hydrogen.
100% Renewables 11th Nov 2020 read more »