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Blog Energy management in buildings

Energy management in buildings

6. February 2023
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Ansicht der LoRaWAN Energiezähler auf verschiedenen Endgeräten

Early action pays off!

Buildings are real energy guzzlers! Around 40 percent of the EU’s energy consumption is attributable to the building sector alone. As part of the European Green Deal of 2019, the German government has therefore set itself the goal of reducing the energy demand of the building stock by 80 percent by 2050. Smart buildings play a crucial role in this. They are the key to more efficient energy use in buildings of the present and future. In order to achieve the goals of the Green Deal, there is a portfolio of policy measures that is regularly supplemented and which focuses on energy management. These include the Heating Costs Ordinance, the Energy Services Act and the EU taxonomy ESG. Don’t wait until you’re pressed for action, start benefiting from smart energy management in your building or property today.

Heating Costs Ordinance

The Heating Costs Ordinance regulates the billing of heating and hot water costs in the tenancy, user or homeowner relationship. The aim is to make monthly energy consumption and costs for heating and hot water more transparent. This creates an awareness of energy-efficient building operation and thus makes it possible to reduce energy consumption. Since 01.12.2022, newly installed meters must therefore be be remotely readable, interoperable with systems from other manufacturers or providers and connectable to a smart meter gateway. be connectable. By 31 December 2026, a retrofit must be carried out in which non-remotely readable metering technology is replaced by new remotely readable metering technology that is interoperable and SMGW-compatible. With smart measuring and recording devices for remote reading, DEOS offers a practical and quickly implementable solution that meets the requirements of the Heating Costs Ordinance. In addition, you can keep an eye on your visualised consumption at all times with our manufacturer-neutral IoT platform pro.Building Suite.

German Energy Services Act

All non-SMEs in any sector are obliged under the Energy Services Act (EDL-G §8) to either

  • a certified energy management system according to ISO 50001
  • or an environmental management system validated according to EMAS
  • or the performance of energy audits in accordance with EN 16248-1

to the BAFA (Federal Office of Economics and Export Control). DEOS creates the ideal conditions for the connection of an energy management system according to ISO 50001 with smart sensor technology as well as control and regulation technology. Thanks to wireless LoRaWAN technology, an easy integration of an energy management system in existing buildings is thus also possible.

EU Taxonomy Regulation 2020/852

Do you care about the environment and want to present yourself as a sustainable company? In order for a company to claim to be sustainable, a classification according to the EU taxonomy is necessary. This is a classification system with which economic activities are classified as sustainable according to scientific criteria. The implementation of efficient energy management is of central importance for this. The EU taxonomy also forms the basis for the Corporate Sustainability Reporting Directive, which obliges large and listed companies to publish energy reports and will be introduced gradually from 2024. Furthermore, it should be possible in future to classify certain corporate bonds as sustainable, the so-called EU Green Bonds. Here, too, the EU taxonomy forms the basis for classification.

Increasing energy efficiency through intelligent energy management

Energy is required at many different points in the operation of buildings. Modern facility management or technical building management looks at the various building services applications as one big whole and tries to realize maximum energy efficiency while at the same time providing optimum comfort. The goal is the intelligent interaction of heating, ventilation, air-conditioning technology, lighting and shading, as well as coordination with usage behavior and external influences such as the weather. An energy management system ensures that energy is only used when it is needed. For example, heaters in rooms are automatically turned down when they are not occupied. In addition, energy monitoring and reporting enable the identification of energy guzzlers in the building, such as outdated or improperly adjusted system components.

Transparent energy monitoring and reporting

The basis of energy management is to create transparency about all energy flows in a building or property. Thanks to modern software solutions for energy monitoring, building data can be read out, evaluated and controlled conveniently from a distance. This can identify potential for energy savings and provide the basis for investments. In addition, setpoints can be adjusted and faults identified at short notice in day-to-day business without the need for a technician on site. With the pro.Building Suite, DEOS provides a cloud-based IoT platform that enables users to easily gain visibility and control over their building data. For this purpose, the building technology systems are connected in a manufacturer-neutral manner and their data is processed and visualized. Be inspired by a variety of useful functions!

  • Pro.Dashboard: Keep a live overview of energy consumption, room temperatures and other actual data
  • Report: Design individual reports and have them issued automatically at certain intervals and to selected persons.
  • Cockpit: Create an individual user interface and control your building via a device of your choice

Energy management: When climate protection is good for the wallet

In view of the ongoing climate change, it is an important concern to reduceCO2 emissions to a minimum. The building sector plays a crucial role here, as it is responsible for a significant share of greenhouse gas emissions. Effective climate protection is thus possible at this point! Basically, there are three optimization approaches here:

  • Decarbonization of energy supply, in particular through the use of renewable energies
  • Reduction of energy demand through the use of more efficient equipment and insulation of buildings and equipment
  • Increasing energy efficiency through intelligent control of energy flows

An energy management system not only fulfills the latter point, but also supports the identification of inefficiencies by creating transparency. Energy savings can be realized through appropriate optimization, thus avoidingCO2 emissions and protecting the climate.

And energy management is also a benefit from an economic perspective. In times of sharply rising energy prices, the share of operating costs for electricity, gas and the like can thus be reduced considerably. Savings of up to 40 percent are possible, especially in existing buildings, so that energy efficiency measures pay for themselves in a very short time.


The introduction of intelligent energy management in a 20,000-square-foot office building can reduce gas consumption by 30 percent.

Annual energy consumption:
240 kWh/m² * 20,000 m² = 4,800,000 kWh

At a gas price of 6 ct/kWh, this results in total annual costs of € 288,000

After the introduction of energy management, there is a 30% reduction in gas costs and annual cost savings of €86,400

Advantages of energy management

  • Subsidies can be obtained

  • Fulfilment of current and future legal obligations

  • Overview of energy consumption

  • Central efficient control

  • Forward planning of maintenance work

  • Climate protection through CO2 savings

  • Pleasant indoor climate

  • Fast reporting and rectification of faults

  • Cost reductions through energy efficiency

  • Areas of application of energy management

    Energy management as part of building management is useful and advisable in all commercial buildings such as office buildings, hotels, schools, airports or retail. DEOS AG offers a wide range of products from the fields of sensors & actuators, switching and control technology and management software. This way, we can put together an optimal solution that gets the maximum energy efficiency out of your property.

    Anyone who thinks that energy management is only an issue in new buildings may be missing out on valuable opportunities. Older buildings in particular offer great potential for savings, which can be exploited by retrofitting them with a modern energy management system (retrofit). The retrofitting of switching and control technology enables intelligent building automation and creates transparency regarding building data and energy consumption. Retrofits are greatly simplified by the use of LPWAN technology such as LoRaWAN for the wireless connection of sensors and plant components to the TGA control system, as time-consuming cable laying is no longer necessary. LoRaWAN-enabled sensors from DEOS AG have long battery runtimes of up to 10 years, ensuring low-maintenance operation.

    When retrofitting conventional radiators with the LoRaWAN radiator thermostat DEOS TEO, high energy savings can be realized in the simplest way. No more turning on and off by employees – the heating output is centrally controlled and intelligently adapted to conditions such as room occupancy. At the same time, the thermostat is completely maintenance-free, because thanks to thermoelectric energy charging, there is no need to change the battery.

    Financial support needed?

    The federal government will help you implement an energy management system with grants and loans. The following are subsidized

    • the measurement, control and regulation technology,
    • the sensor technology,
    • an energy management software.

    Under funding module 3, the German Federal Office of Economics and Export Control (BAFA) subsidizes your investment with up to 15 million euros at a funding rate of up to 40 % of the eligible investment costs.

    If you need a loan instead, KfW provides loans of up to EUR 25 million with a repayment subsidy of up to 55% under the same funding conditions. A combination of both funding programs is not possible.

    Interest aroused?

    Then contact us! We’re glad to help.