A child sits on a sofa and writes on a piece of paper with a pen, as if doing homework or an exercise. Next to the child sits an adult in white traditional clothing, helping with learning by pointing to the screen of an open laptop. The laptop is blurred in the foreground, which puts the focus on the joint work. The bright, tidy environment looks like a living room or quiet work area. The scene conveys guidance, concentration and joint learning at home.

Clarity, comfort, control for end-users.

Easy energy services that work for you, not the other way around.

Our services are designed to simplify work and make it more accurate. By using innovative technologies and digital services, we simplify your life and reduce effort.

Where transparency meets quality of life.

With ista at your side, you benefit from a wide range of smart energy and building management services. Whether transparent consumption recording, automated billing, digital monitoring platforms or intelligent energy-saving solutions.

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Utility Billing

Consolidate all your utility services into one streamlined billing system, simplifying payments and reducing administrative efforts for both property managers and end-users.

A technician is working in a narrow technical room or basement corridor under a ceiling with several parallel metal pipes. He is wearing a blue safety helmet and a work jacket and is raising both arms to check or adjust a pipe or bracket above him. On the right, further installations such as ventilation ducts and cable ducts can be seen, while the walls are made of concrete or brickwork. The perspective looks along the pipes into the depths of the room and emphasises the technical infrastructure of the building.

Retrofit Solution

Transform your existing systems with our retrofit solutions, designed to improve efficiency, sustainability, and performance without the need for full system replacements.

A person sits in a modern office in front of large windows, holding a smartphone in their hand. An open laptop sits on the table. Outside, an illuminated cityscape can be seen at sunset. The scene conveys concentrated work in a quiet, professional environment.

Collection of Chilled Water Charges & Customer Service

Enhance your payment processes and customer satisfaction with efficient cash collection services and dedicated support, ensuring smooth transactions and responsive assistance for end-users and property managers.

Be in control.

Get transparency and easy payment with MY ista.

Experience the convenience of managing your energy consumption, account and bills in one place with our online energy portal.

A group of three people are sitting at a table in a meeting room, engaged in a formal conversation. The person in the middle is wearing a black headscarf and gesturing with her right hand as if explaining an important point. To their left sits a person in traditional white clothing with a black head covering. To their right sits a person in a dark suit with a white shirt and red tie, holding a pen in their hand, ready to take notes. In the background, light-coloured stone walls and a wooden piece of furniture can be seen, conveying a professional and structured work environment.

All laws and regulations in one place.

Laws and regulations are constantly evolving. Clearly structured and always up to date, so you can make informed decisions with confidence.

Quick help, clear answers.

Whether you have technical questions, account settings or an overview of functions - you'll find everything you need here.

150,000+ meters enabled real-time data.

Seamless MDMS integration of meters enabled real-time data access, faster billing, and greater satisfaction.

A person is sitting on a sofa in a warmly lit interior, holding a smartphone in their right hand while slightly adjusting their headscarf with their other hand. The person is wearing a dark headscarf and an orange top that contrasts with the background. Behind them, two modern lamps hang from the ceiling, casting a cosy, golden light. Subtle furniture and a light-coloured wall can be seen in the background. The scene conveys a moment of concentration and calm as the person uses their smartphone, possibly to read messages, check information or take a short break.

Get instant help.

Most frequently asked Questions and Answers.

Need help and like to get in touch with us.

Our strength lies in our personalised service, backed up by our market-leading portals, giving our customers 24/7 access to their energy data, on one bespoke platform.

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Easy energy services that work for you, not the other way around.