Keltbray has saved thousands of pounds on fuel by pairing a Punch Flybrid flywheel unit with a reduced specification generator to power a construction hoist.
A £300m residential development in the West Bar district of Sheffield is believed to be the first major construction site in the UK to be fuelled solely by battery.
Government invests £31m to slash industry emissions energylivenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from energylivenews.com Daily Mail and Mail on Sunday newspapers.