Tender to be launched for geothermal research at Ilidza, Bosnia and Herzegovina
Bansjka Park in Ilidza, Bosnia and Herzergovinia (source: Milan Suvajac, CC BY-SA 4.0 
Carlo Cariaga
23 Mar 2026
Local utility Toplane Sarajevo is set to announce a tender for geotechnical services to evaluate geothermal heating viability in Ilidza in Bosnia and Herzegovina.
Local utility Toplane Sarajevo has received approval for the procurement of geological, hydrogeological, and geotechnical research services to evaluate the use of geothermal waters for district heating at the Luzani site in the municipality of Ilidza in Sarajevo, Bosnia and Herzegovina. The objective of the research is to eventually drill an exploratory or production geothermal well in the Ilidza area to supply the district heating operations of Toplane Sarajevo.
Toplane Sarajevo currently operates four boiler houses in the Ilidza municipality, serving a district heating system that supplies approximately 1805 residential units and 137 business units. Of these four boilers, three are hot water systems (in Mala Aleja, Tome Meda, and Mlade Bosne) and one is a steam system (in Luzani.) The project aims to utilize thermal energy from geothermal waters to replace the three hot water boiler houses. This will help reduce the use of natural gas, increase the use of domestic natural sources, and improve air quality.
According to procurement documents, the estimated value of the contract is KM 350,000 (approx. USD 207,000). Procurement will be done through an open public procurement procedure.
Interest in geothermal exploration in Ilidza had been announced through Toplane Sarajevo as far back as 2020. The objectives and parameters of the project have seemingly not changed since then. In 2021, the city of Sarajevo announced plans of building a geothermal pilot project with funding support from the European Bank for Reconstruction and Development. There does not appear to be any widely reported results from either of these initiatives.
Source: Toplane Sarajevo
