Annual report - HSE

Replacement Unit 6 in TEŠ has a clear economic effect, as it ensures lower electricity price
compared to the prices currently achieved at TEŠ, as well as a significant ecological effect.
After the Unit 6 is launched, we will decrease the emissions of sulphur oxide from 400 to
100 mg/Nm3 and the emissions of nitrogen oxide from 500 to 150 mg/Nm3 relative to
achieved emission of both pollutants in 2008.
In 2012, the TEŠ Unit 6 project entered in its most active phase; main construction works
in the boiler area and relevant preparation works were completed already in February.
Therefore, TEŠ met the conditions for handing over the boiler room area to Alstom, which
started installing the main steel construction in March, followed by secondary construction
in May, to launch installation of pressure vessel in August.
In 2012, most of construction in the boiler room area was carried out, including installation
of main gantry crane in autumn. In April, the company completed construction of the
cooling tower shell and continued with finishing works on the shell and the ground slab
and began with preparations for installation of equipment. At the end of May, construction
works on the flue gas desulphurisation plant were terminated, so the company could begin
with installation of construction and equipment. The railway infrastructure for transport of
the heaviest equipment was inspected and adjusted accordingly.
In 2012, TEŠ carried out all procedures for selection of contractors for performance of other
construction works, preparation and transport of products, preparation of cooling water,
construction installation, ammonia water storage, GIS 400 kV substation, coal transport
– phase 1 and 2 and technological connections. By the end of 2012, most contracts with
contractors were concluded and engagements in the fields of other construction works,
cooling water preparation and construction installations were launched.
Due to delays in obtaining the government guarantee and subsequent lack of funds,
project works performed by some major contractors were occasionally interrupted. In July,
the National Assembly adopted the ZPODPTEŠ act; relative contracts with the Republic of
Slovenia were concluded in November, followed by the National Assembly ratification of
the guarantee contract in December.
The project investor is the company TEŠ.
2.9.2 Lower Sava HPPs
Construction of HPP chain on the lower Sava River is one of the most important projects
at the national level. This economically efficient project is the result of predominantly
Slovenian expertise and will have a positive effect on energy sector (ensuring also RESbased
electricity production) and flood protection, while giving local communities a
constant contribution, i.e. concession, and promoting local economy.
Besides already existing HPP Vrhovo (owned by SEL), HPP Boštanj and HPP Arto-Blanca,
the lower Sava HPPs will comprise also HPP Krško, currently in course of trial operations,
HPP Brežice and HPP Mokrice, both in the process of spatial planning.
Basic technical data
HPP HPP Boštanj HPP Arto-Blanca HPP Krško HPP Brežice HPP Mokrice
Rated flow 500 m 3 /s 500 m 3 /s 500 m 3 /s 500 m 3 /s 500 m 3 /s
Height of fall 7.74 m 9.19 m 9.23 m 11.07 m 7.47 m
Maximum capacity 36 MW 42 MW 42 MW 54.1 MW 33.72 MW
Average annual production 115 GWh 144 GWh 144 GWh 168 GWh 133.19 GWh
Useful volume of reservoir 1,170,000 m 3 1,300,000 m 3 1,170,000 m 3 3,400,000 m 3 2,600,000 m 3
Median annual flow 209 m 3 /s 215 m 3 /s 218 m 3 /s 231.3 m 3 /s 273 m 3 /s
Construction period 2002 - 2006 2005 - 2009 2007 - 2012 2013 - 2016 2013/14 - 2017
Annual Report HSE 2012
2 Business Report
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