New Stirling plant commissioned in Germany

Dec. 20, 2011, Lyngby, DM – A world premiere within onsite renewable energy generation now
provides a spa and wellness center in Germany with carbon neutral
heat and electricity.

Danish Stirling DK, a leading
provider of energy systems based on biomass fuelled Stirling engines,
has commissioned the world's first four-engine biomass-powered
Stirling plant at the wellness and spa resort Tabbs in Tabarz,
Thuringia, Germany. The plant is fuelled with fresh wood chips
supplied from the local region and is capable of generating around
4,000 MWh of heat and 1,000 MWh of electricity annually — the
highest ever reached capacity for Stirling engine based power plants
fuelled with biomass.

It provides the municipally owned wellness
centre with the heat needed to run the facility, and additionally
generates electricity which is mainly consumed onsite. The project
was implemented as a joint partnership with the Siemens Building
Technologies Division office in Leipzig, a local partner and
Stirling.DK as equipment manufacturer.

Dr. Lars Jagd, CEO Stirling DK, says: "We are very proud to hand over
this state-of-the-art combined heat and power plant (CHP) based on
Stirling engines fuelled with biomass for this truly trend-setting
application. The plant is a landmark achievement and represents a
significant technological breakthrough within onsite renewable energy
generation and will secure the spa a leading position with regard to
sustainability."

The expertise of Siemens Building Technologies in developing
integrated energy efficiency projects and the innovation premiered by
Stirling DK combines high plant efficiency, use of low-value fuels
and extremely low dust emissions, a combination unmatched by other
biomass combustion technologies. The use of fresh wood chips and the
size of the energy plant mean that the fuel can be sourced locally
with minimal pretreatment, minimizing the total carbon impact of the
plant.

The plant is the second multiple-engine Stirling plant installed in
Germany. Two additional four-engine plants are currently being
installed in the UK by a local partner, where they will generate
base-load heating, cooling and electricity for two retail centers.

About Stirling DK

Stirling DK (www.stirling.com) is the world's
leading provider of biomass fuelled Stirling engine based energy
systems. These systems enable customers to become self-sufficient
with onsite generation of carbon neutral heat and power, sourced from
locally available renewable fuels. The current major shareholders of
Stirling DK are Vaekstfonden, Denmark, and RWE Innogy Ventures,
Germany.

About Siemens Building Technologies Division

The Siemens Building
Technologies Division (Zug, Switzerland) is the world leader in the
market for safe and energy-efficient buildings ("green buildings")
and infrastructures. As a service provider, system integrator, and
product vendor, Building Technologies has offerings for building
automation, heating, ventilation and air conditioning (HVAC), fire
protection and security. For more information, visit
http://www.siemens.com/buildingtechnologies