First CASSANDRA Workshop Presentation

1. Working With the Mature
Residence – To Improve
Energy Management for
Residence in a Community
Apartment Complex in
Sweden
Marita Holst
Mari Runardotter
LTU-CDT

2. Main Focus for Pilot Case
 Generate data from a multi-residential building as input for the
Cassandra platform modelling capability.
 Implement two different energy efficiency programmes addressing
multi-residential building inhabitants by using the Cassandra platform
with decision makers and to evaluate the effect of such initiatives in a
real-life pilot setting.
 Evaluate the Cassandra platform usefulness and its prediction
capability from the view of The pilot user-group.

3. Page: 3
Setting of the Pilot Case 2 – North Sweden
Luleå
• January 1: Day 3h 33m, Night
20h 27m
• April 1: Day 13h 40m, Night 10h
20m
• July 1: Day 22h 15m, Night 1h
45m48m
• October 1: Day 11h 12m, Night
12h 48m

4. Setting of Pilot Case
Brf Senioren
– One Building
– Three entrances
– 33 apartments
– 43 people all 55+ in age
– 33 garages
– Library and common room (kitchen)
– Laundry room
– Cold storage room for food storage

5. Brf Senioren
• One contract with Luleå Energy (flex-el) all apartment owners share the
cost for the electricity consumption. For heating there is district heating. .
• The tenants have during the last years worked consciously with strategies
and activities for reduction of electricity consumption. (change of
equipment, extra isolation, energy-efficient washing machines, information
meetings where energy saving strategies have been discussed etcetera)
• Want to take one step further and understand what is really the energy
consumers in their building. Further to know consumption in each
apartment, which they don’t know today.
• Have a list of possible solutions, but want help in understanding, making
grounded decisions and to act.

6. Different Phases
• Baseline data.
• Feedback Program .
• Demand Respons Program.
• Questionnaires
• Workshops
• Interviews
Cassandra 1st Project Review 6Brussels, 11 Jan 2013

7. Technical set-up at
Brf Senioren
Cassandra Measurement
Setup:
• Measurement of all the
electricity usage in the
apartment building.
Individual measurement
in each apartment.
• The electricity is
measured once a
minute, minute values
are stored in a DB and
distributed to the
Cassandra platform
using an API.

8. Pilot results from baseline measurements

9. Pilot results from baseline measurements

10. Comparing Energy Consumption in Two Apartment.
Here peaks in usage comes at around 09:00,
13:00 and 21-22:00 during a day. For this
month the total consumption of energy was
104,8 kWh.
Peaks here come between 08:00-13:00 and
again from 18:30 and forward. These peaks are
very distributed and the only clear pattern is that
at approx. 11:00 the consumption is high and
again at 21:00. This apartment had a total
consumption of 425,8 kWh during the month.

11. Interactions with Tenants
• To create baseline understanding on
knowledge and interest in energy
saving as well as in what motivates
to changes in behaviour.
– Initial questionnaire, October 2012
– 3 Workshops, May/June 2013
(Involved 15 informants in total
(4+6+5))
– Individual Interviews (9 informants)
– Interview guides – open ended
questions
– Recorded – transcribed

12. Workshops at Senioren
• 3 workshops
• Theme ”Energy savings” (motivation to change and
save)
Type of questions:
– Tell us about your energy consumption today
– Thoughts on the energy debate
– Tips and ideas for energy saving

13. Results from the first interviews at Senioren
• 9 individual interviews
• Theme ”Information on Energy Savings / Energy
Consumption” (How to visualise energy consumption)
Type of Questions:
– Distinction between energy saving / energy
consumption
• Where do you find information on energy saving /
energy consumption
• Information content
– Dream on – i.e. How they would like it to be in the
future

14. Results…
• The tenants are very aware in Energy Saving Issues
– Have ideas and thoughts on how to save
– Have done this for a long time
– Being a house owner is a good school
• Main motivations are:
– Saving money
– Environmental reasons
– But, other motivators can also be identified
• Concerns
– Reasonable levels of saving
– Feelings of prohibitions

15. Results…
• Power
• Independence
• Status
• Social contact
• Honour
• Idealism
• Family
• Order
• Acceptancce
• Tranquility

16. Feedback Program at Senioren
Two screens with visualisation of energy
consumption
• One screen in common areas
showing five bars
– One bar for all apartments in each
entrance (three bars)
– One bar for all garages
– One bar for the common areas on
ground floor (library, kitchen, meeting
room etcetera)
• One screen in basement ”meeting
spot” showing four bars
– One bar for cold room
– One bar for laundry room
– One bar for the two handicraft rooms
– One bar for sauna (inkl lights) and gym
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17. • Detailed data per apartment in
web portal.
– Access from own computer
– One small computer (windows)
connected to large screen in
meeting room making it possible
to enter the SABER web for
more detailed data information
• Each tenant have recieved a
login to view their own
consumption (apartment
level), and statistics for all
common areas
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Feedback Program at
Senioren (cont)

18. Next Steps
– Offer the tenants individual ”consultancy” of their personal energy
consumption. analysing energy consumption patterns using the
Cassandra platform and SABER.
– A few workshops using the Cassandra platform. (with board)
• Will help decide on demand response programs to implement
in the fall as well as giving input to design of Cassandra
platfrom
– Formative usefulness evaluation activities with Cassandra
platform prototype will be used to influence the platform
functionality and to decide for further implementation priories.
(other stakeholders)
– Demand Respons Program implemented
– Follow-up workshops / interviews, dates to be decided
– 1-2 academic papers
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19. Thank you!
Marita Holst
Marita.Holst@ltu.se
Mari Rundardotter
Mari.Runardotter@ltu.se
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