Electricity Blue carbon’s 'Ultra eco' has already been installed in more than 3,500 companies across Europe, but has only just started being marketed – the company attended their first energy show earlier this month.

This 'electrical current optimisation' technology reduces kWh consumption, carbon emissions and electricity costs by up to 23% - typically giving a return on investment in less than 24 months – without affecting equipment or supply voltage.

Transport Canadian company EnerMotion has revealed the first system for recovering and reusing the energy lost through heat in transportation. As much as 30% of the energy produced by a diesel engine can be lost through the truck's tailpipe. Enermotion's Hybrid Power and Energy Recovery system captures and stores thermal energy, and is able to monitor the temperature of the engine and either heat or cool it as required. It also powers the heating and cooling systems in the cab. Big name fleets including JD Smith and Sons are set to start using the system soon, and it should be commercially available in 12-18 months. Fuel savings of 9% are being predicted – providing payback in less than a year, assuming there are no issues for lorry insurance providers to worry about.

Software The Partnership University NHS Foundation Trust in Essex, UK, has just announced power savings of more than 20% after installing energy-saving software made by Verdiem – meaning it will save£10,000 on power each year. The Surveyor IT programme automatically turns off computers when not in use.

Water Green technology company Rigel, based in Singapore, specialises in developing water-conserving toilets. The company says it is now working on a solar power generator to power sensor and flushing systems – so they save even more energy, as well as water.

Air travel A new low-carbon aviation fuel has been developed by Britain's Virgin Atlantic, in partnership with LanzaTech. The fuel has just half the carbon footprint of the standard fossil fuel alternative. It is made by processing waste gases captured from industrial steel production, which would otherwise be released into the atmosphere as carbon dioxide. The technology is currently being piloted in New Zealand, and is expected to start being used on Virgin flights within two to three years.