ista is one of the world’s leading companies providing energy management and billing services for improved energy efficiency and transparency of heating and water consumption in buildings; serving over 12 million consumers in apartment buildings and commercial properties across 25 countries.

We assist customers, landlords and tenants to deliver transparency through heat and water metering, heat cost allocation, data collection and reporting within Community and District Heating.
Formerly Clorius (now ista) founded in Denmark in 1902 we leverage our considerable history and experience within our state of the art reporting and billing services. Whether credit or pre-payment systems, these provide clarity and security for landlords and utilities so that their consumption and heat delivery is appropriately and efficiently measured, optimised and billed. With very low investment, energy, costs and CO2 can be significantly reduced. Our comprehensive ‘Meter Data Management’, ‘Energy Management Visualisation’ and ‘Billing’ platforms, show our customers the cost/savings available and achieved in measuring and managing their utilities.

We achieve further efficiency gains in buildings by offering supplementary services; including smoke alarms, humidity monitoring, temperature/climate analysis, energy advice and our energy contracting services.

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