Save money and build a greener future.

End-to-end retrofit solutions for smarter utility management.

ista is the market leader in retrofitting BTU meter systems across the UAE. Our certified experts deliver turnkey solutions for private, government, and semi-government properties - ensuring smooth installation, accurate billing, and full regulatory compliance.

Why choose Retrofit solutions?

Be compliant with regulations

Be energy efficient & cut costs

Be eco-friendly & reduce CO₂ footprint

Accurate & transparent individual billing

Your one-stop solution for Retrofit service.

A sub-metering retrofit involves more than just installing devices; it's about preparing your building for the future of utility billing. With the regulatory deadline of January 2026 approaching, all properties in Dubai will be required to base their billing on actual meter data. 

That’s where ista comes in. We already support over 500 buildings across the UAE and are a trusted partner to private, semi-government and government clients alike. 

Whether your property is under construction or already occupied, our certified team will ensure a smooth, low-disruption installation. For buildings that were not originally designed to accommodate meters, we adapt the existing infrastructure to enable precise, regulation-compliant data collection from day one.

Retrofitting your building with sub-metering technology brings immediate and long-term benefits. By tracking actual consumption at the unit level, you gain the transparency needed to identify inefficiencies, reduce waste, and lower operating costs. But beyond day-to-day efficiency, retrofitting is a strategic move that aligns your property with the UAE’s vision for a Net Zero future by 2050. It enables smarter energy use, better building performance, and informed decisions backed by real data.

We make compliant utility-billing transparent and easy. For everyone.

The picture shows an older woman with a brown notebook in her hand, standing in a light-coloured office room with a glass front. She is wearing a creamy white jumper, several small gold necklaces and light brown suit trousers. she has grey shoulder-length hair and she is looking to the left and smiling. In front of her in the foreground is a table with a white model of a city with a tower block, several smaller houses and several wind turbines. the background is blurred, but you can make out the glass front, a white flower box and a corner of another desk.

Community Managers

Enable consumption based billing to reduce service charge and energy costs, supporting the UAE's net zero strategy.

Developers

Smart meters and consumption based energy billing for End-users reduces service charges and fulfills all regulatory requirement. Ultimately supporting the targets of the Dubai Integrated Energy Strategy.

Upgrade to proven technology and best in the market metering service with ista.

Ok, but how does it really work?

Retrofitting a building with sub-metering is one of the most impactful steps toward smarter energy use, fairer billing, and long-term efficiency. In existing and occupied buildings, this process requires more than just technical expertise – it calls for end-to-end coordination, minimal disruption, and full regulatory compliance. As the market leader in retrofitting BTU meter systems across the UAE, ista offers exactly that.

Our turnkey approach ensures that every aspect of the project is handled seamlessly and with maximum expertise. From the design of a tailored metering strategy to the supply and installation of BTU meters – including M-Bus cabling, pipe modifications, and integration with third-party systems – we manage the process from start to finish. 

Our certified teams oversee installation, testing, commissioning, and project delivery, while also supporting you with meter reading, billing setup, tariff design, maintenance, and dispute resolution if needed. ista combines deep local experience with technical excellence, delivering retrofit projects that are efficient, compliant, and built for shaping a more sustainable tomorrow.

 

Technical features

BTU meters are installed in the cooling infrastructure of the building as per client's requirements ensuring compliance with the relevant regulation. Consumption and meter data will then be collected utilizing wired and/or wireless communication technology to enable consumption based billing.


 

100% Easy

Find your end-to-end solution with us.

100% Digital

Always and everywhere informed.

100% Sustainable

We give houses a future.

Unlock efficiency: Our smart and future-​proof devices.

By combining our one-​stop solutions with the innovative technology in our appliances, managing your energy consumption has never been easier. Our experts are happy to advise you on the best combination of tools to optimise efficiency and savings.

Cooling Meter

Our precise cooling meters, ensure accurate billing and efficient temperature control across buildings.

Water Meter

Track water consumption with high precision.

Wireless System (LoRa & MBus)

Flexible, efficient wireless metering connectivity.

Wired System — M-Bus

Reliable wired communication for utility meters.

Developers

Smart meters and consumption based energy billing for End-users reduces service charges and fulfills all regulatory requirement. Ultimately supporting the targets of the Dubai Integrated Energy Strategy.

The picture shows a room, with windows in the top left side. On the top right side are many papers pasted on the wall and below them are two office desks. The focus is on a woman with a blue shirt, standing in the middle of the picture, right before the desks, holding a few sheets of the energy efficiency certificates.

Community Managers

Also benefit from our web portal, which allows them to manage all their property information centrally. With just a few clicks, invoices can be verified and legal requirements met.

Upgrade your metering infrastructure with a tailored retrofit solution from ista.

One easy solution. From start to finish.

From inquiry to implementation – our mission is to create smart, one-stop solutions that make your life easier. We are here for our customers every step of the way and offer 24/7 customer support.

  1. Our experts review your property's cooling system and recommend the best metering solution for accurate and efficient heat cost allocation.

  2. Our advanced meters and wireless systems can be installed with a minimum of disruption.

  3. Automated data collection securely transfers real-time usage information to a centralised system, eliminating the need for on-site visits.

  4. End-users and property managers can access clear, real-time consumption information through an intuitive digital platform.

  5. Accurate and compliant billing is generated automatically, ensuring fair cost allocation and a problem-free experience for all parties.

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 mil.
t CO₂ emissions avoided

14 mil.
utilisation units

Frequently asked questions

Discover more innovative solutions to transform your property.

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

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.

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.