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Thermomodernization of Nursery in Chmielnik

Il Caso Evidenziato Highlighted Case
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This full energy renovation of a public building is certainly beneficial in the local context, and in Poland where coal is still widely used for heating, it is an important good practice with a lighthouse effect.

Thermomodernization of the building of the Local Government Nursery in Chmielnik.

Construction of the Local Government Preschool in Chmielnik it was started in 1959 and lasted until 1961. The building was put into use without access to electricity and running water, which were brought in 1965. In 1998, renovation works were carried out involving the exchange of roofing and carpets in didactic rooms. Despite the work carried out, the technical condition of the building was bad. Destroyed window and door woodwork, lack of ventilation, insulation of the building, and an outdated heating installation caused large energy losses. Due to the large costs of its delivery, a decision was made to deeply thermomodernize the building. As part of the work undertaken, the insulation of the flat roof, external walls, cellar walls, window and door woodwork was replaced and a new heating installation was made, where the gas boiler was the source of heat. In order to improve the energy efficiency of the building, renewable energy sources were used in the form of photovoltaic panels. The reduction of energy consumption as well as the limitation of emission of harmful substances into the air confirms the legitimacy of the investment. During the implementation of the task, the needs of future generations and the state of the surrounding environment were taken into account. The main beneficiaries of the project are children with their parents.


Resources needed

The costs of thermo-modernization works incurred in total amounted to about 387 637 Euro, in which non-eligible expenditure constituted about 102 832 Euro, eligible about 284 806 Euro. The share of co-financing from the European Union under the ROP of the Świętokrzyskie Voivodship amounted to 95%


Evidence of success

The share of renewable energy sources due to the photovoltaic panels increased by 9%. Annual heat demand for heating the building decreased by 83%. The implemented practice is considered good because it will contribute to the improvement of energy efficiency, Thanks to the implementation of the task, the costs of its operation have been significantly reduced by reducing the demand for energy, including electricity.


Difficulties encountered

During the project, the schedule of its implementation should be well planned, taking into account weather conditions in the area. It has been proved that deep thermal modernization of the building can adapt it to the current energy standards and environmental.


Potential for learning or transfer

During the internship, it was proved that that despite the poor technical condition of the building, a low-efficiency heating installation, fuelled by solid fuel and the resulting high energy demand (thermal energy and electric), deep thermomodernization can lead to the adjustment of energy and environmental parameters to the applicable standards. During the implementation of the task, an ecological effect was achieved, consisting in a 100% reduction of emissions of such harmful substances as PM10 and PM2.5 as well as suspended in it benzo (a) pyrene, soot and sulfur oxides. The investment allowed for 99.94% reduction of carbon monoxide emissions, 91.70% reduction of carbon dioxide and 87.39% reduction of nitrogen oxides. Thanks to the implementation of the practice, the energy demand of the building was reduced fivefold. This experience may be used as an example and be replicated in other European Union countries where there are public buildings built before 1965.

Author(s) information


Tomasz Stepniewski - Marshal Office of the Swietokrzyskiee Voivodeship / Rachel Tully : RES - Enerselves


ul. Sienkiewicza 8; 26-020 Chmielnik


Lessons learnt

Expert opinion / Katharina Krell / This full energy renovation of a public building is certainly beneficial in the local context, and in Poland where coal is still widely used for heating, it is an important good practice with a lighthouse effect. However the learning effect is limited, and ROP grant-based energy renovation is not likely to work anymore as a financial model, and the next stage of public building renovation will need to find a new business model.

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Operational date

Lunedì, 16 Ottobre, 2017