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Active House B10 in Stuttgart, Germany
“Spark for an energy miracle”− Frankfurter Allgemeine Zeitung (July 18, 2014), paraphrased
About alphaEOS
2© alphaEOS AG, 2014
• alphaEOS is a startup company
located in Stuttgart currently
comprising 16 employees
• Our interdisciplinary team develops
predictive smart home solutions
running advanced machine learning
algorithms
• Customers across Germany, Austria,
and Switzerland are now using our
retrofitable predictive climate control
system to save energy
Status Quo
3© alphaEOS AG, 2014
Carbon dioxide emissions of a 2-
person household in Germany
Electricity
Fuel
HomeHeating
Estimated total retrofit costs to
increase energy efficiency in
Germany
(Quelle: Statistisches Bundesamt, eigene Berechnungen)
~ 40.4 million housing units
~ 35 million need to be renovated
Average floor area = 90.2 m2
Renovation costs: 300 – 1 500 €/m2
Assume average ≈ 500 €/m2
= 1 578 500 000 000 €
June 6, 2014 at 1:00 pm (Germany)
4© alphaEOS AG, 2014
Highest PV-output of 2014 (24.2 GW) Equivalent to about 20 nuclear power
plants
The term Aktivhaus ("Active House") stands for buildings,…
Definition
© alphaEOS AG, 2014
… that can generate, store and consume energy together with other buildings in a self-
organized network with the objective of achieving as much energy autarky as possible.
...that are able to actively react to changes in outdoor areas as well as indoors if these
affect the energy performance of the building or the comfort of the user.
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Active House B10Research Areas
© Werner Sobek Stuttgart, Photos: Zooey Braun, 2014
1. Seamless integration of electromobility with our built environment
2. Potential role of residential houses in the energy system of the future
3. Predictive energy management for buildings and electric vehicles
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Project Overview
Active House B10
Project Partners
Project Sponsors
© alphaEOS AG, 2014 7
Location“B10” is an abbreviation of the address: Bruckmannweg 10, Weissenhofsiedlung,
Stuttgart
© alphaEOS AG, 2014 8
House by Richard Döcker at Bruckmannweg 10The original house was destroyed during WWII and could not be rebuilt
© alphaEOS AG, 2014 9
Construction SiteDue to regulatory restrictions on the site, a narrow floor plan was necessary
© alphaEOS AG, 2014 10
Construction ProcessThe house was erected and ready for use in a single day
© Werner Sobek Stuttgart 2014 11
Active House B10View from the southwest
© Werner Sobek Stuttgart, Photos: Zooey Braun, 2014 12
Active House B10View from the terrace
© Werner Sobek Stuttgart, Photos: Zooey Braun, 2014 13
Floor Plan
Construction
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Overview of the Assembly
© Werner Sobek Stuttgart, 2014
Components
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Technical SystemsElectrical Module
© Werner Sobek Stuttgart, Photos: Zooey Braun, 2014 16
Technical SystemsHVAC Module
© Werner Sobek Stuttgart, Photos: Zooey Braun, 2014 17
Summary
Energy Concept
© alphaEOS AG, 2014
Forecast energy balance: 200% coverage of the house’s own energy needs through
building-integrated renewable energy generation
High-performance building envelope while maintaining open and transparent
architectural concept
Optimized climate control and maximal use of on-site energy generation through
intelligent energy management and building automation
Efficient and resource-friendly heating and cooling system
Connection to virtual power plant: Grid connection for energy consumption and surplus
energy feed-in controlled through incentive-based pricing system
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Efficient and Resource-Friendly Heating and Cooling System
Energy Concept
© alphaEOS AG, 2014
Forecast Heat pump uses ice storage tank and PVT-array as heat sources to maximize
COP (Coefficient of Performance)
Building cooling is provided in summer by using ice storage tank as heat sink
Power for circulation pumps is generated on-site by PVT-array
Large-area floor and ceiling heating and cooling circuits can be thermally activated with
low supply temperatures
The goQ “matrix” hydraulic mixing and distribution system allows heat sources and
heat sinks to be selected for maximum efficiency under varying conditions
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Power consumption and supply are influenced by the virtual power plant to
meet power grid requirements
Virtual Power Plant Integration
© Next Kraftwerke, 2014
Example of demand-oriented power supply
Powersupply togrid in KWh
Electricityprice in€/MWh
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Simple, mobile, and highly integrated
© alphaEOS, 2014
User Interface
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Context-Sensitive Interface Elements
© alphaEOS, 2014
User Interface
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© alphaEOS, 2014
Context-Sensitive Interface Elements
User Interface
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System snapshot from September 17, 2014
© alphaEOS AG, 2014
Energy Balance
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© alphaEOS AG, 2014
Not all buildings can or should be renovated to meettoday’s energy efficiency standards
alphaEOS AG
Marienstr. 4270178 StuttgartGermany
Tel +49.711.400 407-20Fax +49.711.400 [email protected]
Contact
Further Information
www.alphaeos.com
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