Experience
Wind turbines
Rated power
Wind energy
Rothenfurth
News relating to WF Rothenfurth
Renewable Energies for the experts of tomorrow
Within the practical education of the advanced physics course eab Projektmanagement GmbH organized a practical day on 4th of July 2013 on the subject of “energy production, -use and -supply”. Students from the 11th and 12th class from the “Johann-Gottfried-Herder”-Gymnasium (high school) in Pirna as well as the 6th class from the “Clara-Zetkin-Schule” (secondary school) in Freiberg visited the building site at Rothenfurth, where the company eab Projektmanagement GmbH currently establishes two wind energy turbines.
The trip was initiated by the teachers, students and their parents in cooperation with eab Projektmanagement GmbH and was intended for supporting the students in the difficult but essential subject of their occupational orientation. On the basis of an interesting and practical experience they had the special opportunity to become acquainted very close with the different professional areas of a sustainable industry, especially wind energy, and its various possibilities.
Together with the turbine manufacturer ENERCON eab enabled a site inspection. The eab experts explained the importance of wind energy to the students together with the different criteria that must be considered in particular by the investor during the planning. At the same time technical details of the turbine as well as information about the grid connection have been given and many questions have been responded. During the on-site inspection the students could develop a feeling for the huge dimensions of a modern wind energy turbine and its challenges on logistics and installation, only the rotor blades of this turbine type have a length of 38.8 meters each and the nacelle weighs 60 tons.
Especially the physical basic principle for the use of wind energy, its transformation into electrical energy, the “transport” to the feeding point and in the grid of the local energy provider Stadtwerke Freiberg and the further distribution to the domestic homes and companies have been depicted to the students. Thus, the sometimes very theoretical training got a practical application giving a better understanding.
eab Projektmanagement GmbH currently erects two wind energy turbines of the type Enercon E-82 E2 with 98 m and 108 m hub height. Both wind energy turbines have a total rated power of 2.3 MW each. These two wind energy turbines with total building heights of 139 m and 149 m, which will feed in the grid of the local energy provider Stadtwerke Freiberg, could theoretically cover the demand of about 2,840 average households with their annual production of about 9,930,000 kWh.
Freiberg obtains more wind power
On 5th November 2012 eab Projektmanagement GmbH started at the wind priority area “Großschirma/ Halsbrücke” with the erection of two powerful wind energy turbines of the type Enercon E-82 E2 with 98 m and 108 m hub height.
Both wind energy turbines have a rotor diameter of 82 m and a total rated power of 4,6 MW. After the planned commissioning in summer of 2013, the produced electricity flows through the grid of Stadtwerke Freiberg.
In 1995 and 2002 eab erected wind energy turbines of the type Enercon E-40 and E-40 6.44 with a total rated power of 1.700 kW at the wind priority area Freiberg/ Langenrinne (Zug), which are the only turbines producing wind energy for Stadtwerke Freiberg to this day. So far the average annual production of 3.300.000 kWh wind energy has covered the electricity demand of about 940 private households (3.500 kWh per household).
Through these two wind energy turbines, which have a total building height of 139 m and 149 m, Freiberg is enhanced in their balance of renewable energy supply severely. By the triple annual production of about 9.930.000 kWh of the new turbines the demand of about 2.840 average households could be covered.
Calculational, these 5 Freiberger wind energy turbines could cover 20 % of the annual electricity demand through wind energy at the current electricity demand of all Freiberger residents of about 65 Mio. GWh per year (source: Stadtwerke Freiberg, 2011).
Mr. Axel Schneegans, chairman of Stadtwerke Freiberg AG, commented: “With the integration of these two powerful wind energy turbines to the grid of Stadtwerke Freiberg we assume responsibility in excess of the city boundary, for the further development of wind power in central Saxony. This is consistent with our middle-term generation strategy, which also allows the construction of own wind energy turbines in Freiberg.”
These two new wind energy turbines are the last ones, which are erected in the wind priority area Großschirma/ Halsbrücke, where already 5 turbines of the type Enercon E-66 and Enercon E-82 were erected.
A major problem to the approval of this project presented the vision related to the “Halsbrücker Esse”. When the project was planned, the dominance of this technical monument was considered in the context of preservation particularly.
The companies Mitteldeutsche Netzgesellschaft mbH as well as Stadtwerke Freiberg AG were asked when the connection network point was selected. The closest connection point in a distance of 5 km and therefore the most economical one was provided by Stadtwerke Freiberg AG in the industrial area “Schwarze Kiefer”.
- Type of turbine:
- Enercon E-82 E2/98m
- Enercon E-82 E2/108m
- Number of turbines:
- 2
- Rated output (kW):
- 4600
- Year:
- 2012
- Country:
- Germany, Saxony