How we give buildings a future.
While Germany aims to reach greenhouse gas neutrality by 2045, ista already decided back in the summer of 2021 to pursue an even more ambitious plan. We are going a significant step further by aiming to reduce our emissions to net zero by 2030.
To achieve this, we are systematically implementing various measures step by step. However, it is not yet possible to completely avoid emissions. That’s why we are also making a financial contribution to climate protection by purchasing CO₂ certificates from the First Climate initiative.
Our goals are ambitious but, thanks to our clear roadmap, we are confident that we can achieve them.
To achieve our goal of net zero by 2030, we have introduced a variety of measures that we are systematically implementing. We are well on the way to electrifying our vehicle fleet, as the example of Germany shows: in the 2024 reporting year, a third of our service vehicles had already switched to e-mobility. Including hybrid cars, around 72% of the ista fleet is now (partially) electrified.
We are also getting ever closer to our goal of using 100% renewable electricity for the energy supply in our properties. In 2024, 80.3% of our locations worldwide were using renewables.
Nevertheless, we are well aware that we still have a long way to go. This is why we continuously analyse and assess the efficacy of our actions, fine-tuning them, if necessary. This ensures we remain on course to reach net zero.
The trend is quite clear: our customers' carbon footprint in Germany is steadily decreasing. In 2023, the average CO₂ savings for properties with heating cost billing was 12.33% compared with the base year 2018. Customers who have a clear picture of their own consumption can reduce it in a targeted manner, thereby also cutting greenhouse gas emissions.
Discover all key figures
We are committed to protecting the environment and climate – at all the company’s locations.
Total CO2 emissions at ista in 2024: 7,442 tonnes.
Total CO2 emissions per employee (FTE) at ista in 2024: 1.21 tonnes.
We will be CO2-free (net zero) by 2030: by acting in a resource-saving manner in all areas of our business (scope 1–2 and selected scope 3 categories).
We sell innovative products and services that enable our customers to behave in a climate-conscious manner and protect the environment.
Average CO2 savings per rental unit in properties with heating cost billing since 2018 (as at 2024): -12.33%.
We will help our customers/users reduce their CO2 emissions by 20% by 2030 (base year: 2018).
We offer our employees attractive working conditions and a motivating corporate culture.
In 2024, ista employees in Germany completed a total of 2,212 days of training. Across the Group, around 27,720 courses were completed on our digital learning platform.
We invest in our employees with apprenticeships, training courses and coaching so they can reach their full potential – in both the analogue and digital worlds.
We want to make our entire value chain sustainable and therefore attach great importance to ecologically and socially conscious action, also in our dealings with our partners.
The carbon footprint of our supply chain (air, sea and road freight) in 2024: 1,525 tonnes
In dialogue and close cooperation with our suppliers, we are continuously committed to reducing the carbon footprint in our supply chain.
We are engaged for the benefit of society, sharing our knowledge of energy management and climate protection and making a contribution for the good of our environment.
Number of hours worked for climate protection in 2024: 4,360 hours
We will create opportunities for our employees to invest at least 5,000 hours a year in promoting climate protection, energy awareness and social engagement in society.
In order for us to consistently pursue our goals, we need firmly established structures and responsibilities. At ista, sustainability is a top priority: our Management Board is directly responsible for the company's sustainability activities and defines the ambitious goals we want to achieve in the years to come.
Our Senior Programme Manager Sustainability is in charge of coordinating all activities. He regularly reviews and fine-tunes implementation of the global sustainability strategy in close consultation with the Management Board.
Sustainability delegates coordinate and develop local activities in each country. They also ensure that ideas from their respective markets are incorporated in the overall strategy.
We use centralised corporate sustainability software across the Group to measure and manage our sustainability performance. This software collects and aggregates relevant data such as energy consumption, emissions, mobility and HR development.
It helps us to continuously monitor our progress towards our goals and to prepare customised reports for internal and external stakeholders. This creates transparency and lays the foundation for informed decision-making.
ista conducts its business activities in accordance with recognised international standards and binding internal policies. Its actions are guided in particular by the United Nations Global Compact. As a signatory, we have committed to upholding fundamental human rights and labour standards, protecting the environment and fighting corruption.
The ista Code of Conduct applies worldwide and requires all employees to comply with international standards relating to human rights, working conditions, data protection and anti-corruption. The Code is reinforced by specific internal guidelines covering areas such as business partner management and competition law.
Corporate Compliance provides web-based training for all employees on our Group-wide learning platform. This training is mandatory for everyone. It presents the content of the Code of Conduct in a practical and user-friendly way. Similarly, a mandatory e-learning course provides comprehensive information on anti-corruption, fair competition and compliance requirements for business partners. The training is updated regularly and must be completed annually.
A Group-wide compliance management system ensures compliance with all relevant requirements. An independent auditor has confirmed the adequacy of this system in accordance with the IDW auditing standard (IDW PS 980).
Integrity does not end at the company's doors. We also expect our suppliers and service providers throughout the world to meet fundamental ESG standards. They are bound by our Business Partner Code of Conduct, which is based on the principles of the UN Global Compact and the requirements of the German Supply Chain Due Diligence Act (Lieferkettensorgfaltspflichtengesetz).
