Ask most people what 'Being Green' means to them, and aside from the many comical replies you'll surely get a number of comments regarding energy efficiency, so it comes as no surprise that a Sustainable Action Plan is in place for Ljubljana. What makes up this plan?

High on the agenda is the substitution of environmentally less friendly fossil fuels with more acceptable alternatives, as well as improving the efficiency of energy conversions. Indeed, the city aims to reduce energy use in all areas of consumption, to create the ideal energy efficient city.

The plan goes to 2020, and the fundamental objectives are to create a 25% share of renewable energy in final energy consumption, as well as making a 20% improvement in energy efficiency. The plan aims to reduce greenhouse gas emissions by around 20%.

It doesn't end there. Total final energy consumption will be reduced by 16%, as biofuels are introduced into transport and wood biomass into the heat and electricity supply segment. Solar energy use will be increased, as well as the installation of heat pumps and the construction of hydroelectric plants. The key aim of all of this is to reduce CO2 emissions by some 30%.