ista is one of the global market leaders in the consumption-dependent billing of energy, water and ancillary costs. ista consequently works on new services and sustainable solutions for saving resources in the real estate business. This is a central part of our company strategy. The services offered to property managers, homeowners and energy utilities range from the supply and installation of meters to metering and consumption-dependent billing. With its products and services, ista makes an important contribution to the responsible use of water, heat and energy. We bring the energy turnaround to our customers and the tenant. With our ista energy data management system, all consumption data are visualized using smart radio technology on an online portal or by app and made available to the user every month. Everyone thus becomes an independent energy manager and can individually control their consumption. With very low investment, energy and CO2 can be significantly reduced - depending on individual requirements. We achieve further gains in efficiency in buildings by offering supplementary services. They represent our service, for example, by providing central heating or heating systems in 24 countries, which include central heating and heating performance checks, which are provided jointly by

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