<p>Hydrogen powered trains will support the progressive roll out of 
electrification schemes, as well as delivering clean train travel on 
routes where overhead wires cannot be economically justified. </p>
<p>HydroFLEX is part of a suite of Porterbrook engineering initiatives 
designed to improve air-quality, reduce carbon and deliver a 
cost-effective and sustainable railway for both passengers and 
taxpayers.</p>