Operating biomass heating plants requires a high degree of technical know-how and great administrative commitment. We as the operator network nahwaerme.at Energiecontracting GmbH know this from many years of experience. Therefore, we have developed the heating plant data information system heidi: heidi is a software for operators of biomass heating plants heidi offers support for the technical and economic management. heidi was developed by operators for operators! heidi has a modular structure. This means that you can select the software modules you need to operate your heating plant as required.