The picture shows a smiling woman with long brown hair wearing a white blouse and a blue skirt. She is bent slightly forwards and extends her hand to shake the hand of another person, who can only be seen in a cropped view on the right of the picture and is wearing a black shirt. Between the two people at the bottom of the picture is a desk on which a white file is lying. Behind the woman at the bottom left of the picture is a black office chair, from which she has obviously stood up, as her slightly bent forward position suggests. Two large glass walls can be seen in the blurred background on the left, separating the compartment in which the woman is standing from the rooms behind it. White walls can be seen in the background on the right, with cables or pipes leading to an air conditioning unit or a valve on the ceiling. Overall, the picture gives the impression that the two people are greeting each other in an office.

Service around the clock.

Contact & support.

Want to contact us, need support or have questions about our products and services? You will find answers and contact options in the service area of ist

Downloads

De nieuwste brochures, documenten en uitleg.

Meer informatie

Woordenlijst

Complexe begrippen eenvoudig uitgelegd.

Meer informatie

Veelgestelde vragen

De meestgestelde vragen voor jou.

Meer informatie

Wet- en regelgeving

De nieuwste regelgeving die jou aangaat.

Meer informatie

Service Information

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.

20.10.2025 | 19:00 -> Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Cum magnis dis montes, ridiculus mus.

Read morearrow_forward

Viewing consumption is now even easier.

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Cum magnis dis montes, ridiculus mus.

Read morearrow_forward

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.

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Cum magnis dis montes, ridiculus mus.

Read morearrow_forward

Saving energy can be so easy.

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Cum magnis dis montes, ridiculus mus.

Read morearrow_forward

Webinars en Seminars

Samenwerken met ista betekent werken met betrouwbare experts in energiemanagement die u helpen kosten te besparen en de efficiëntie te verhogen. Met ista krijgt u toegang tot geavanceerde technologie en innovatieve oplossingen die uw energievoorziening toekomstbestendig maken.