If used on a large scale, solar cells could significantly reduce carbon emissions.  If a total land area 1% of the size of Texas was covered in solar cells with 30% efficiency, it would provide enough to power the whole of America.  (National Renewable Energy Laboratory figures).

Polymer cement is made by adding different materials to cement, to make new kinds of concrete which save huge amounts of energy.

Polymer cement can be produced using 40% less energy per ton than ordinary cement.  In many cases these new concrete polymers are also lighter (less transport costs) and have better insulating properties. A common ingredient is ash from coal-fired power stations.

The chemical industry in the EU is a prime example where huge amounts of energy could easily be saved by product exchanges.  Every day many thousands of trucks drive long distances across Europe carrying identical chemicals in opposite directions from different sets of suppliers to factories.  If both companies were part of a Product Exchange, they would swop their identical stock online. Polish polyethylene for example would go direct to a Polish factory, and the same for the French. Over 100 million kilometres of trucking could be saved if chemical suppliers worked more efficiently.  That’s equivalent to 10 million litres less diesel burnt, saving at least EU 20 million in costs.