In the course of the public tender procedure, PKE Management Board selected the bid submitted by the consortium with Rafako SA as the Leader assessing the bid as the most advantageous offer. The offer comprises the project execution, delivery, assembly and start-up of OFz-201 biomass-fired boiler in PKE Jaworzno III Power Plant - Power Plant II. The offer value amounts to circa net PLN 230 million.

The renewable energy source power unit in PKE Jaworzno III Power Plant - Power Plant II will be equipped with a new fluidized-bed boiler designed to exclusive firing of biomass which will operate with the existing TG1 turbine which presently is connected to PK-10p (K4) boiler. This boiler will be put out of operation the moment the RES power unit construction process is completed. The maximum generator output will be maintained at the level of 50 MWe.

The new boiler will be assembled adjacent to the existing one namely PK-10p (K4) within the range of axes 19 and 27 which define the power Plant II boiler room. The basic task of the new renewable energy sources power unit will be operation in the condensation mode and generation of the so-called green energy. In emergency situations, the steam from the new boiler will be used in the process of heat production as the new power unit will be the back-up for the basic installation responsible for the district water heating.

Basic fuel for the new fluidized-bed boiler will be biomass from forests and wooded areas (forest management) – the so-called forest biomass as well as biomass from energetic plants and agriculture – the so-called agrobiomass the weight share of which in the total biomass mixture will amount to minimum 20 percent.

The biomass which will be fired in Jaworzno boiler will be transported to the storage areas exclusively by means of trucks. It will be unloaded on site of the unloading station and directly on the open-air storage site. The agrobiomass will be unloaded in one unloading station.

A system of conveyors will transport the agrobiomass to the storage units comprising the closed depositaries. Such depositories will enable the separate storage of various biomass types in four containers. Agrobiomass proportioning will be carried out by means of conveyor system the regulation of which will range from 4 to 30 tons per hour.

The volume of agrobiomass stored in closed depositories shall secure the demand for the period of seven days for the boiler rated output with the 20 percent of agrobiomass share in the total fuel stream. Forest biomass will be transported by means of conveyors to the storage system comprising closed forest biomass depositaries. As in case of agrobiomass, such depositories will enable biomass storage in two or three separate containers. Forest biomass proportioning will also be carried out by means of conveyor system the regulation of which in this case will be significantly larger ranging from 25 to 70 tons per hour.

The volume of forest biomass stored in closed depositories shall secure the demand for the period of two days for the boiler rated output with the 80 percent of forest biomass share in the total fuel stream. The remaining forest biomass, covering the 5-day demand will be stored in the open-air storage site.