Welcome to ista!


The efficient use of energy and water is one of the major issues of our time. With our solutions we not only meter but make energy consumption visible. Thereby help consumers to save energy and change their individual energy consumption behaviour.

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ista is one of the world’s leading companies providing energy management services for greater energy efficiency in buildings. ista specialises in the recording, billing, visualisation and management of heat, water and gas in 24 countries worldwide.


Corporate Social Responsibility does not take place on the fringes but at the heart of ista. Our products  are sustainable to the very core because they help conserve resources. Therefore, the focus of our entire company is very much on responsibility.


Submetering is a unique tool to save energy and CO2 emissions in buildings. As a low-cost investment, it provides full transparency of individual energy consumption to tenants and apartment owners.


ista works consequently on new services and sustainable solutions for saving resources in the real estate business. This is a central part of our company strategy.