As a part of the assessment, four scenarios are analyzed in terms of the reduction of environmental impacts resulting from the choices to be made by the Tallinn Bus Company. Also analyzed are the costs of the alternatives up until the year 2020, taking into account the current conditions.

Reducing the CO2e emissions with a transition to biofuels is a rather costly and inefficient measure. A reduction of 1 ton CO2e with the alternatives analyzed in the study would, at current prices, cost 206 €/ ton CO2 reduced for hybrid fuel, 311 €/ ton for biodiesel fuel and 450 €/ ton for bio-ethanol fuel. Compared to the measures implemented in the energy and heating sector, the biofuel alternatives are 10 to 20 times more expensive. Furthermore, there are several measures in the transport sector, where the CO2 cost-efficiency is ca. 15–70 €/ton.

The report is available in Estonian with English Summary at