Short Presentation of Rödl & Partner
Rödl & Partner is one of the biggest international auditing and consulting firms.
Rödl & Partner engages 2.430 employees on 49 international locations and on 22
locations in Germany. Within the business unit Public Management Consulting and the
department of infrastructure, the Competence Center “Renewable Energies” focuses on
Renewable Energy Technologies. Project management, financing advisory, tariff
models, PPP-models and emission trade are the main subjects of the consulting
services. Rödl & Partner is assigned for the overall project management of the
geothermal pilot project Unterhaching and provided already services in the field of
renewable energies to the Worldbank, UNEP, Federal Ministry of Environment and
numerous client from the private and public sector.
Summary of Presentation
Geothermal Project Unterhaching
Geothermal Unterhaching Limited, owned by 100 % by the community, implements a
hydrogeothermal project with combined heat and power generation based on a
geothermal doublet drilled down to depths of approx. 3,350 m. This geothermal
project includes the installation of a power generation plant, district heat
network, heat plant, thermal water pipeline and pump system. For the first time a
power generation plant unsing the Kalina-Process will be installed in Germany. The
first drilling was finished successfully in September 2004. The final pump test
results are: thermal water at 122 °C and a flow rate of 150 l/s. The second drilling
for reinjection of thermal water has started in June 2006 in the South-East of
Unterhaching. The two drillings have a distance of about four km and are connected
by a thermal water pipeline.
The geothermal energy, respectively thermal water at a temperature is pumped up by
one borehole, the so-called production well. At surface it is either cooled down by
the power plant (evaporating ammonium-water mixture) or during winter time providing
heat energy for the district heating network. The exact flow volume is determined by
the demand of district heat network (“heat-guided system”). The cooled water is
pumped back to the same aquifer by the second borehole, the so-called reinjection
well. The aquifer is the thermal water reservoir in the subsurface, which is located
in the Molasse Basin in South Germany.
The Kalina power plant will have a capacity of 3.36 MWel. The generated power will
be fed into the public network at a regulated fee (Renewable Energy Act) of 0.15 € /
kWh. In Unterhaching the thermal capacity of the geothermal production well will be
approx. 38 MWth. The district heating network is realized in two construction
phases. The installed capacity in the first construction phase is about 28 MWth and
for the second one it will reach 40 MWth.
Presently the project is in the construction phase: district heating network,
reinjection drilling, thermal water pipe line, power plant are under construction.
Commissioning of the district heating network is planned for 10/2006 and of the
power plant for the fourth quarter of 2007.
The environmental relief by the project in Unterhaching will be a considerable CO2-
reduction between 30,000 and 40,000 t per year.
Head of Competence Center Renewable Energies
Project Manager Geothermal Project Unterhaching
Rödl & Partner GbR
Public Management Consulting
Äussere Sulzbacher Str. 100
Tel.: +49-9 11-91 93-3611
Fax.: +49-9 11-91 93-3549