User Manual
Restricted © Siemens AG 2013. All rights reserved.
November 2013 Page 1 Presenter / IC BT SSP ST
BT SG
BEMS: Building Energy Management System
Thermal
storage
E-car charging
BEMS
Data Flow
Energy Flow
E-Car
HVAC
Green Building
Monitor
Lighting
Solar
Wind power
DC inverter
Smart grid
CHP
Smart meter
Gateway
Electricity
storage
Fire safety
& security
Geothermal
energy
Water tank
Water pump
Restricted © Siemens AG 2013. All rights reserved.
November 2013 Page 3 Presenter / IC BT SSP ST
BT SG
1) International Energy Association, auf weltweiter Basis, im Jahr 2002 2) During operation phase, Dena Congress, Berlin, 2008
20% 80%
Operation / Renovation
Design/
Build
2-5 1-2 20-40 0-1
Deconstr.
Years
Cost
Buildings account for 41% of worldwide energy consumption
1)
Energy accounts for 40% of building operating cost
2)
Buildings
Mobility
31%
41%
28%
Industry
Smart buildings are the
answer to the challenges
of today and tomorrow
Smart buildings leverage the additional
functionalities that fully integrated build-
ing systems provide.
This results in more energy efficient
and cost-optimized consumption while
maintaining the occupants‘ comfort,
for example with motion detectors that
turn off the lights when a room is not
occupied.
Smart buildings are not only energy con-
sumers but also energy producers (pro-
sumers), employing on-site energy gener-
ation systems such as photovoltaic, wind
power, and combined heat and power
units (CHP), to mention a few.
Such high-tech buildings are also able
to store thermal and/or electrical energy.
Lower operating costs combined
with a better image
Smart buildings help building operators
optimize costs (reducing energy con-
sumption without loss of comfort and
lowering energy cost per kWh consumed)
as well as maintain a positive image
(complying with regulations and respond-
ing to the increasing pressure of stake-
holders regarding corporate and environ-
mental responsibility).
Energy efficiency and grid stability
solutions for grid operators
Buildings consume approximately 40%
of the world’s generated energy. In addi-
tion, global energy consumption is likely
to increase significantly in the near future
due to the growing world population,
increases in the average life expectancy
and urbanization. Needless to say, grid
operators and utilities will be facing some
major challenges to ensure reliability and
security.
Smart buildings in smart grids are the
answer to these challenges, since their
high efficiency and role as energy pro-
ducers will help lower the world’s energy
demand. In addition to avoiding costly
grid infrastructure extensions, these
buildings will also balance out the grid
fluctuations caused by the unpredictabil-
ity of renewable energy through their
energy storage capabilities.
Highlights
Challenges that smart
buildings address:
■
Room comfort
■
Occupant productivity
■
Occupant safety & security
■
Energy costs
■
Sustainability regulations
■
Greenhouse gas emissions
Additional challenges that
smart buildings in smart
grids address:
■
Grid instability caused by
fluctuating renewable energy
sources
■
Integration of renewable
energy sources