In a joint statement of the SDIA with the Energieeffizienzverband für Wärme, Kälte und KWK e. V. (Energy Efficiency Association for Heating, Cooling and CHP - AGFW) and Bitkom e. V. we express the urgent need to adjust the definition of waste heat in the upcoming changes to the Combined Heat and Power Act (KWKG) in Germany in order to support the use of waste heat from data centers as a climate-neutral and sustainable energy source.