This measure aims to reduce the peak usage of energy for trams and trolley buses in order to limit the contracted reserve capacity and the related costs.
Brno Public Transport Company (DPMB) has to contract its annual expected amount of electricity to ensure the electric vehicles operation. To obtain a balanced energy distribution, there is also a requirement for DPMB to book monthly a reserve capacity for each 15-minute interval. The costs related to reserve capacity have a negative influence on the cost of electricity because unused capacity still needs to be paid and exceeding the contracted reserve capacity is heavily penalised.
To achieve these objectives a remote heating control is installed in 380 electric vehicles (240 trams and 140 trolleybuses). This includes also an automatic warning system which in case of reaching the level of reserve capacity will generate the message to be transferred to the on-board computer in the electric vehicle and switch off the heating automatically for 5 minutes.
This new system was presented to the public during the European Mobility Week and the CIVITAS Day and trough articles in the regional newspapers and in the periodical magazine about public transport in Brno for passengers. The new system was presented also at the targeted expert meeting of public transport operators which took place in the city of Most (April 2012) and to the representatives from Bratislava PT Company (Slovakia).