ista is the world's leading company for the consumption-dependent billing of energy, water and ancillary costs.

The services offered to property managers, house owners 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, gas and electricity.

From 1999 until April 2003 ista International GmbH (formerly: Viterra Energy Services) belonged to Viterra AG, which was in turn a member of the E.ON Group. In April 2003, ista was sold to funds advised by the British investment company, CVC Capital Partners. The CVC funds announced the sale of their stake at 22, March 2007 to Charterhouse Capital Partners.

We provide a comprehensive package of services, based on a wide range of high-precision equipment for metering and recording energy and water consumption (heat allocation meters, water and heat meters, systems technology and all accessories). ista offers the entire process as a one-stop solution. Our range of products and services covers not only the supply, installation and commissioning of meters but also the consumption-dependent billing of energy, water and ancillary costs.

Given the ever increasing need to use our natural resources responsibly, the market potential for energy and water metering and billing services will continue to grow. ista is looking to these demands and developing its range of products and services with foresight. ista's aim is to systematically expand its position as the world's market leader by:

• selective acquisitions in its core business 
• developing new regional markets 
• systematic service, quality and process management 
• developing new technology
• developing new products and services