Energy Efficiency Plan

New buildings - refurbishment of existing buildings - use and operation

The establishment of a carbon-neutral state administration will take more than just a few years. Efforts to develop alternative energy concepts, the provision of considerable investment and material resources and comprehensive information on how to handle energy in a climate-friendly way are required to reach this target.
The biggest part of the CO2 emissions is caused by the buildings' energy supply. Therefore, particular importance has to be attached to the mitigation measures related to buildings and operation.
In order to support the Hessian state government in its efforts to reach the CO2 reduction targets, an Energy Efficiency Plan 2030 has been elaborated  aiming at the increase of energy efficiency and the reduction of CO2 emissions caused by state-owned buildings. The respective measures refer to the following fields:

● Construction of new buildings

● Energy-oriented refurbishment of existing buildings

● Use and operation

For the construction of new buildings and the energy-oriented refurbishment of existing ones state-wide uniform standards regarding energy efficiency have been determined. In addition, a comprehensive refurbishment program for the state's existing buildings is on the agenda.
In order to optimize the behavior of the buildings' users coaching and training measures are offered or competitions are organized.
As of the beginning of the year 2010 the state government's target to switch the state buildings' power supply completely to electricity from renewable energy sources (green electricity) has been reached almost a 100 percent. Since then the state-owned building properties have been supplied with energy from water power plants.



Sustainable and fair procurement of products and services

The Hesse state administration commits itself to procuring products and services exclusively on the basis of the criteria "sustainable" and "fair" and to continuously making efforts to improve their sustainability. Consequently, binding rules for the state administration's procurement measures have been anchored in the Hesse Energy Law regulating the procurement of energy-efficient products and services. According to these regulations the relevant demands with respect to energy efficiency and energy consumption as well as the impacts on the climate are to be considered in the procurement process. In this context, a general principle  has been established and guidelines have been developed regarding various product groups, such as vehicles, computers, screens and office devices.



Corporate mobility management

Also business trips and the car fleets of the Hesse state administration carry some potential of reducing and avoiding CO2 emissions. The documentation of these emissions as well as concepts for their minimization and substitution are therefore on the agenda of the Interministerial Work Group (IMAG), which is elaborating a base registration concept for identifying the state employees' behaviour regarding mobility and business trips. The major target is the collection of basic data which allow a valid assessment of the emissions produced on business trips in order to determine the state's carbon footprint.

As part of the project, the deployment of electric vehicles in the state offices' car fleets is promoted. Testing the electric vehicles also implies gaining practical experience with the necessary infrastructure for charging the batteries.


Construction of new buildings

Energy-oriented standards for new buildings

New buildings constructed in the future will have no or only a minimal demand for primary energy. The remaining energy demand is supposed to be covered by renewable or low-emission energy sources, as far as technically and economically feasible.
Compared to the legal standards specified by the Energy Saving Regulations 2009 (EnEV 2009) the requirements are considerably tighter. When constructing new buildings the state even exceeds the demands regarding the energetic quality of the building envelope.  When it comes to the creation of concepts for sustainable construction the planners are supported by sustainability coordinators in the application of energy standards. The medium-term target of the Hesse model is to construct administrative buildings on an "almost-zero-energy" basis.


Energy-oriented refurbishment of existing buildings

Energetic standards for existing buildings

For existing buildings owned by the state uniform standards regarding the energy efficiency have been defined, aiming at full compliance with the applicable Energy Saving Regulations (EnEV) when these buildings are fundamentally reconstructed and refurbished. Administration buildings rented by the state government are also subject to the energy efficiency standards for new buildings.


CO2 Reduction and Energy Efficiency Program (CO2-Minderungs- und Energieeffizienzprogramm: COME)

For the energetic refurbishment of existing buildings the CO2 Reduction and Energy Efficiency Program (COME program) has been introduced. The program was launched in 2012 and will be running until 2017, covering a total volume of 160 million €. On the basis of this program real estate is refurbished in terms of energy efficiency, contracting measures are implemented and energy monitoring systems are established for energy-intensive buildings. At present, more than 60 construction activities are being planned or already carried out. The target is saving about 200,000 tons of CO2 over a period of 30 years.
As part of the COME program, also old heating systems based on fossil fuel are modernized. If technically and economically possible, the systems are converted in such a way that they work on the basis of renewable energy sources, such as wooden pellets or woodchips. In some buildings thermal power stations or solar systems will be installed for heat generation, so that the heat generating performance can be reduced by an average of 25 percent. About 39 percent of the heating energy demand will be covered by renewable energy sources. The CO2 reduction is expected to amount to about 659 tons per year.


Use and operation

Energy-conscious behaviour and optimized operation of facilities

Construction measures, however, are not the only means of saving energy. In fact, encouraging the building's users to adopt an energy-conscious behaviour and optimizing the operation of technical facilities play an equally important role in this context. In order to exploit the energy saving potential when using the buildings, the state's employees are actively involved in the project of establishing a carbon-neutral state government.



A special education concept has been developed for energy commissioners and in-house technicians in order to train them in the field "Energy efficiency in use and operation of buildings". Practice-oriented training modules provide knowledge on the issues energy consumption, energy use and energy efficiency.


Energy management

By the introduction of an energy management system "energy saving models" are supposed to be developed for the individual departments. The participating real estate managers are supported in identifying unused energy efficiency potentials as well as defining and implementing target-oriented measures in order to trigger off of a continuous improvement process.


Energy saving coaching

As part of a one-week coaching project the state employees are supposed to be targeted at their workplaces and informed about energy saving potentials. Energy commissioners are on site to answer any questions concerning energy and readily provide individual tips for saving energy in the office.


Energy saving competitions

The state employees are important multipliers when it comes to spreading the idea of a carbon-neutral state administration and increasing their colleagues' consciousness of this target. Energy saving competitions carried out in the Hesse state offices raise the employees' awareness of energy-saving behaviour and thus reduce the consumption of electricity, heating energy and water in the respective buildings.

The nation-wide energy saving competition "Hesse Energy Cup", which was carried out for the first time on such a large scale in 2010/2011 in 41 buildings, aroused the state employees' readiness to actively and joyfully get involved in the energy saving project.
As of 2012, after the success of the "Hesse Energy Cup", so-called "energy saving tandems" have been formed to continue the project. In these energy saving partnerships the  "Energy Cup" participants have been passing on their experience to the state employees in other offices thus multiplying their knowledge on energy and water saving measures.
The second competition "Hesse Energy Cup II" confirmed the forecast that a change in the users' behaviour would save up to 10 - 15 percent of energy and water. The expectations were even exceeded in some parts.