The paper „Using straw for high efficiency district heating systems” contains an information of common and different things in between using a gas, woodchip and straw fired boilers in district heating systems. In the paper types of straw boilers and ways for using straw as fuel for heating is collected. The main parameters which describe the heating system are gathered and analyzed. At the moment natural gas boiler is used as a primary energy source. The main problems that could appear after changing the energy source from natural gas to straw are gathered. The main goal of the paper is to make it possible for the model show the parameters of the heating system after changing the energy source taking in account the possibilities to regulate the boiler parameters, fluctuations of the temperatures and energy production as well as heat demand by the consumers.