More quality with less effort for property management.
Our services are designed to simplify work and make it more accurate. By using innovative technologies and digital services, we simplify work and reduce effort.
Digitalisation makes it more easy.
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Furure-proof Heat Cost Allocation
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Automated Operation Cost Billing
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Wireless Water Metering
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AI based Heating Optimisation
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Services to secure the property.
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Secure Smoke Alarm Service
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Perfect Air Quality Measuremet
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Easy made Energy Monitoring.
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Easy made energy management for residential properties.
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Property managers service source.
Get rid of Heat Cost Allocation.
Webinar: Heating cost allocation and billing are often paper-based. We will show you the easy-to-use digital heating cost billing in a webinar.
Save money in your boiler room.
Webinar: Heating costs are also rising, as are energy prices. We will show you how you can easily save money, energy and extend the service life of your heating system in a webinar-.
All you need to know regarding EED 3.0.
The EED is an energy efficiency directive that poses new challenges for property managers. We show you the steps you need to take to comply with the directive.
Easily read data remotely.
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Latest Project in Real Estate.
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Profit from 24/7 Support Service.
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Webinars & seminars
Partnering with ista means working with trusted experts in energy management who will help you save costs and improve efficiency. With ista, you'll have access to cutting-edge technology and innovative solutions that will future-proof your energy needs.
Webinar: Heat cost allocation and billing easy made
20.10.2025 | 19:00
Webinar: Heating optimisation with Heat Pilot
22.10.2025 | 09:00
Webinar: Smoke alarm detectors save life and protect properties
30.10.2025 | 12:00
Webinar: Chilled water consumption billing and collection
30.10.2025 | 15:00
Most recent downloads
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Who we are.
We are an international company headquartered in Germany and is one of the leading providers of consumption data recording and billing for energy in buildings. Our goal is to make energy transparent by optimizing and digitizing buildings in over 20 countries to make them future-proof.
We make buildings sustainably valuable. To do this, we manage data and processes that make properties climate-friendly, safe and comfortable. We already have over 43 million connected devices in use worldwide and are developing solutions for the intelligent and energy-efficient buildings of tomorrow.
Our data-based products and services make individual energy consumption transparent to residents so they can save energy, costs and CO₂.This in turn makes it easier to increase the energy efficiency and thus the value of the property. As a driver of innovation, we are consistently gearing our infrastructure towards the Internet of Things.
We rely on the latest and proven technological standards - both wireless and wired - to ensure precise measurement results and create valuable services for customers. We use and develop technologies that really prove themselves in daily use. They are state of the art and work reliably to transmit data securely.
We can look back on over 50 years of company history and combine this long-standing experience with modern expertise to offer forward-looking solutions in building management.