Service around the clock

We are always there for you.

User group clustered information

I am Resident

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I am Owner / Co-Owner

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I am Property Manager

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I am Real Estate Company

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Das Bild zeigt eine Frau, die auf einem Sofa sitzt und die Heizkostenabrechnung von ista liest. Sie hat langes blondes Haar und trägt eine schwarze Brille. Ihr Oberteil ist ein blaues Hemd, dazu trägt sie eine braune Hose. Während sie die Heizkostenabrechnung in der linken Hand hält, ruht ihre rechte Hand an ihrem Kinn. Sie blickt direkt in die Kamera. Das beige Sofa, auf dem sie sitzt, erstreckt sich über das gesamte untere Drittel des Bildes. Auf der linken Seite liegt eine weiße Decke über der Rückenlehne, davor lehnt ein gelbes Kissen. Im Hintergrund sind verschiedene Möbelstücke zu erkennen, die auf ein Wohnzimmer hinweisen: Rechts stehen eine Stehlampe und ein Regal, in der Mitte führt eine offene zweiflügelige Tür in einen weiteren Raum mit Bücherregalen. Der gesamte Hintergrund ist unscharf.

Webinar: Digital Water Billing.

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Viewing consumption is now even easier.

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The picture shows two people sitting opposite each other at a table in a room filled with warm sunlight and with glass walls. On the left side of the table is a full glass of water and asmall pile of documents. The picture was taken from the perspective of one person, so that you only see the back of them and the other person, who is a woman, is in focus. The woman is in the center of the picture and the other person is on the right side of the picture, beeing a bit cut off. The woman is wearing a bright blue shirt, has dark wavy short hair and is smiling at the other person while holding her right hand to her chin and the other hand lying on the table touching her ellbow. The person that can only be seen from the back has a black jacket on and bright blond hair/ grey hair and a short sleek back haircut. They are explaining something to the woman while they are holding a document with their left hand and pointing with a ballpoint pen with their right hand onto something on the document.

New service offer for all users.

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Saving energy can be so easy.

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The image shows a group of diverse people smiling and taking a group selfie. They are standing close together in an indoor setting that appears to be an office or a collaborative workspace. The people in the photo represent a variety of ages, genders, and ethnic backgrounds, reflecting a diverse and inclusive environment. The atmosphere is cheerful and positive, suggesting a sense of camaraderie and teamwork among the group members.

Be smart.

The best tips for saving energy easily.

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Energy Saving Tips

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.