“The cost/benefit ratio must be such that the value of the emissions removed is higher or at least equal to the price of the bid. In this way the bonus model is as technology neutral as possible and different measures to reduce emissions can be directly compared,” commented Mäkinen. The best proposed measures will be approved in order of their cost-effectiveness until the total cost reaches the budget limit.
HSL organized the first competitive bidding for the environmental bonus in summer 2012 and it has reserved 600,000 euros for the bonus period running until the end of 2013. The measures will enable HSL to reduce bus transport carbon emissions by 7 per cent, nitrogen oxides by 2.7 percent, and particle emissions by 6 percent annually.