There are three main types of hydrogen:Ībout 71% of the hydrogen used today is known as "grey hydrogen". Most of the world’s hydrogen is produced from fossil gas, and releases millions of tons of carbon emissions every year. The clean-burning gas could be used to replace fossil gas in factories and refineries, or as a fuel for heavy transport such as shipping, without emitting greenhouse gases.Īlthough hydrogen itself is a clean fuel, the process of producing hydrogen can be extremely polluting. Hydrogen is considered a crucial tool in the UK government’s plan to cut the country’s emissions to net zero' by 2050. But, depending on the method of burning, it can also cause health-harming air pollution and, as a climate-heating gas itself, any leakage of hydrogen could offset some of the advantages of its use. The gas is burned to produce power, emitting water vapour, warm air, and no carbon greenhouse gases. Green hydrogen is produced by using renewable electricity to drive an electrolyser that splits water into hydrogen and oxygen. ScottishPower plans to build the facility, which will be around the size of a football pitch, on brownfield land within the port, which is one of the busiest in the UK and a trade hub. ScottishPower estimated the whole project could cost between £100m and £150m. It has submitted an application to the government’s Net Zero Hydrogen Fund, which provides state backing to develop low-carbon hydrogen projects for the next three years. The company, owned by €63bn Spanish utilities giant Iberdrola, said demand for the green fuel had stepped up since petrol and diesel prices began to soar last year, emboldening the firm to invest.
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