HEAT 4.0 16 partnere: Aarhus Universitet Brønderslev Forsyning Center Denmark Danfoss Dansk Fjernvarme DESMI DTU EMD International ENFOR Hillerød Forsyning Kamstrup Kingspan/Logstor NIRAS
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form aimed to ensure data quality by, for example, validating data, troubleshooting missing data, and resampling data at the required sampling rates. In addition, the platform's pur- pose was to enable the district heating plants to select and replace several different digital services/software systems and connect them via plug-n-play technologies through common data interfaces. At the time of writing, work is continuing to develop such a commercial cloud, of which the project partner 'Center Den- mark' is in charge. The cloud solution will save district heat- ing companies many hours of integration, make usage data much more intelligent, provide freedom of software choice to operators, and simultaneously comply with the high require- ments for IT security and privacy rules (GDPR), of course. Prospect to efficiency and financial savings The goal of the entire HEAT 4.0 project was to demonstrate savings of heat losses in the pipe network of 1-2% through digitalization. But research results during the project process showed that the saving potentials were much higher for the already efficiently managed District Heating plants like the
out setting requirements to communicate across the different software solutions and services. The first step in the HEAT 4.0 project was to find secure methods for the OT systems to be opened up to their surroundings in a controlled way and thus be able to both send and simultaneously receive data from other surrounding IT systems. In the development process of this new IT architecture, strict requirements were set for cyber security to protect data and prevent possible hacker attacks. It was necessary to standardize the IT language used to im- prove operators' performance and control capabilities. Here, the recommendation was to use OPC-UA as a standard pro- tocol for data exchange, which has been developed within In- dustry 4.0 and has inspired the name of the current project. In addition, HEAT 4.0 recommends the use of REST-API interfac- es for the data exchange between software packages. First, a so-called peer-to-peer (p2p) solution was developed for communication purposes, which denotes the agile and flexi- ble communicative IT structure without a centralized server. But the project's ambition was higher – and work was subse- quently done to create a 'common data platform.' The plat-
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