Our family and my business Global Change Ltd have just taken a big step to become carbon neutral. We calculated the total amount of carbon we will use this year including all my business travel lecturing on global trends (a staggering 80 tons of carbon on air travel to conferences and corporate events). We have invested in a hydroelectric scheme outside the UK which would not otherwise be viable. By joining up with other organisations we have enabled the project to start generating electricity which will directly reduce local use of coal and gas, offsetting the carbon we will produce this year.
It is not the answer to global warming but is a small step which if replicated by every business and every household would make a big difference, balanced by other measures for energy efficiency.