Working With the Mature

Residence – To Improve

Energy Management for

Residence in a Community

Apartment Complex in

Sweden

Marita Holst

Mari Runardotter

LTU-CDT

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.

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

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

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.

Different Phases

• Baseline data.

• Feedback Program .

• Demand Respons Program.

• Questionnaires

• Workshops

• Interviews

Cassandra 1st Project Review 6Brussels, 11 Jan 2013

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.

Pilot results from baseline measurements

Pilot results from baseline measurements

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.

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

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

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

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

Results…

• Power

• Independence

• Status

• Social contact

• Honour

• Idealism

• Family

• Order

• Acceptancce

• Tranquility

Feedback Program at SeniorenTwo 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 gym16

• 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 17

Feedback Program at

Senioren (cont)

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 papers18

Thank you!

Marita Holst

Marita.Holst@ltu.se

Mari Rundardotter

Mari.Runardotter@ltu.se

19