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Customer Portals
The picture shows a young man leaning against a glass railing and holding a small tablet with a white cover in his hand. He is smiling and looking into the distance. The man has short brown hair and a short brown beard and is wearing a beige suit with a white t-shirt underneath. Since the photo was taken from a frog's-eye view, you can see a tall, modern office building made of light-coloured stone with four rows of large windows in the background.

Smart Solutions for Smarter Savings.

Embrace the future of energy management with smart devices and automated services to future-proof your property. Boost your bottom line by enhancing energy efficiency and cutting costs.

Your benefits at a glance:

Reduce Consumption with Smart Metering

Be Energy Efficient & Cut Costs

State-of-the-Art Smart Devices

Future-Proof Your Properties

Nationwide Coverage Wherever You Are

Maximize Savings with ista's Proven Energy Solutions.

Managing residential properties efficiently presents numerous challenges, from maintaining cost-effective operations to ensuring tenant satisfaction and regulatory compliance. Property managers and owners frequently struggle with optimizing energy use, streamlining billing processes, and keeping up with the dynamic demands of the real estate market.

These challenges require sophisticated, integrated solutions that can adapt to both the complexities of property management and the evolving needs of residents. ista’s suite of services address these challenges head-on by offering a comprehensive range of tools and technologies tailored for the residential real estate sector.

Start saving money today! Learn more about how our services can benefit your property.

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Energy Savings Made Easy with Our Expert Solutions.

We understand that no two properties are the same, and as such, we work closely with you to identify and implement the right solutions that best fit your property. Our expert team is dedicated to ensuring that all your property needs are met, and that everything runs smoothly.

Property Services

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Energy Management & ESCO Services

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Community & District Cooling

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The image depicts a bustling urban street scene featuring a classic European-style apartment building. The building's facade is characterized by elegant architectural details, including wrought iron balconies, green shutters, and ornate window frames. The structure stands four stories tall, with retail shops on the ground floor, marked by large display windows and signage. Pedestrians are seen walking along the sidewalk, some engaged in conversation, while others appear to be in transit. The overall atmosphere is vibrant, reflecting a lively city environment.

Power Optimisation

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One-Stop Property Management Services.

With our digital services, you can benefit from our experience and expertise in energy management, ensuring your properties are optimized for energy efficiency and cost savings. Our customized approach takes into account the unique needs of each property, ensuring maximum results.

Energy Audit

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The picture shows a smiling man holding a tablet on which ista's Energy Management Minute View is displayed. The man has brown hair and is wearing black glasses. He is wearing a beige and grey striped shirt and a blue blazer over it. He is standing in the centre of the picture and looking directly into the camera. A modern office can be seen in the background. On the left-hand side of the picture is a wooden shelf in front of a black wall, decorated with long hanging plants and various objects that give the impression of awards. On the right of the picture, two women are sitting next to each other at a white work table covered with various work items. The woman in front, whose long black hair and beige loose top are visible, rests her arms on the table and has turned her head towards her colleague, so that only the back of her head is visible. The woman next to her has long blonde hair and is wearing a light blue shirt. Her side profile is recognisable. The entire background is blurred so that the focus is on the smiling man with the tablet.

Energy Management

Enhance energy use with 24/7 monitoring and real-time insights.

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Submetering

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The picture shows two hands holding a smartphone into the camera frame. On the smartphone is the screen for ista’s Leakage-detection app. The rest of the picture is blurred, but the person who’s holding the phone can be seen to be sitting on the couch at home.

Water Leakage Detection

Automated leakage monitoring to avoid any costly water damage.

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Billing Services

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Multi-Utility Billing

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Cash Collection & Customer Service

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Ready to Reduce Your Property's Energy Consumption?

Contact us now

Facts & Figures

6.300
Employees

Icon: In einem Kreis in der Farbe lime Grün befindet sich eine abstrakte Darstellung der Erde.

20
Countries

3,7 Mio
t CO₂ emissions avoided

43 Mio
Radio devices

14 Mio
Utilisation units

Innovative Solutions which Deliver Results.

Our digital solutions are designed to help our clients reduce their environmental impact, improve health and safety in their buildings, and reduce energy costs.

The picture shows a man sitting on a balcony in an urban environment. He is wearing a dark blue suit and a white shirt and is sitting relaxed at a small black table on the lower half in the centre of the picture. On the table in front of him are a laptop, a notepad with a pen and a coffee mug. The man has rested his legs on the balcony railing and is holding a telephone in his left hand while talking on the phone. The balcony is richly decorated with plants. On the left of the picture, climbing plants stretch up the wall, taking up almost the entire left side of the picture. Below the climbing plants are several pots of flowering plants and greenery arranged along the floor of the balcony. Above the man, stretched across the balcony, is a string of lights with several light bulbs that extends from the top left-hand corner to the right-hand side of the picture. In the background you can see a row of multi-storey buildings in various shades of yellow stretching across the top and centre of the picture. Behind the buildings is a park-like landscape with many trees that further break up the background. The sun seems to be either rising or setting, giving the picture a warm, golden glow. The view from the balcony extends over the roofs of the city.

Be Compliant

Meet local regulations easily with our tailored solutions designed for residential and real estate compliance and efficiency.

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The picture shows a green, wide and tall meadow with large green trees on the edge of the horizon in the upper third of the picture and a girl running through the meadow. From the upper edge in the centre, bright yellow rays of sunlight stretch across the middle of the picture and bathe it in warm light. In the centre of the picture, a little girl in a knee-length, sleeveless white dress is walking across the meadow with her back to the viewer. Her long blonde hair blows away from her body to the left as she moves. In addition, as she runs, her left arm is loosely behind her back and her left foot is bent upwards so that the entire underside of her foot can be seen at the end of her dress.

Be Eco-Friendly

Reduce your carbon footprint and creating sustainable living environments with ease. Our solutions offer innovative ways to manage your environmental impact effectively.

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The picture shows a section of an open laptop from an angle so that only half of the keyboard is visible. A person in a blue shirt, of whom only the hands and arms can be seen, is in the right-hand half of the picture and is typing on the laptop keyboard. The hands and the laptop keyboard are in the centre of the picture and are in focus. To the right of the laptop, a smartphone and a black cup can be seen in a blur. In the background is a window that floods the room with light.

Be in control

Gain full control of your properties through precise data insights and real-time monitoring.

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