Smart Metering in Germany and Austria Results of Providing Feedback Information in a Field Trial Textmasterformate durch Klicken bearbeiten

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1 Smart Metering in Germany and Austria Results of Providing Feedback Information in a Field Trial Textmasterformate durch Klicken bearbeiten Zweite Ebene Dritte Ebene Vierte Ebene Sebastian Gölz, Dorika» Fünfte Fleissner, Ebene Heike Schiller, Fraunhofer ISE Konrad Götz, Georg Sunderer, ISOE Joachim Schleich, Marian Klobasa, Marc Brunner, Fraunhofer ISI / 1 Thematic symposium Do households save electricity through feedback based on Smart Metering systems? at Sustainable Consumption 2011 Conference November 6-8, 2011 in Hamburg, Germany IAEE

2 Major Goals of the Project Intelliekon What is the relevant effect of feedback on knowledge and behaviour of households? What are the relevant motives to use feedback as such? Development of feedback instruments that account for both, households expectations and needs. Evaluation of feedback instruments with more than 2000 households within a yearlong field trial. What are the major environmental implications of a reduced residential energy consumption in terms of CO 2 emissions? Thematic symposium Hamburg

3 Project Key Data Consortium Four scientific Partners Industry Partners from 10 utilities Financial support: German Federal Ministry of Education and Research under the socio-economic research funding program From Knowledge to Action Thematic symposium Hamburg

4 Technology for Field Trial Intelliekon Feedback instruments Household Utility Smart Meter Thematic symposium Hamburg

5 Project design Thematic symposium Hamburg Nullmessung Befragungen Pilotgruppe 10/08-03/09 04/09 05/10 11/ Pre-Phase Qualitative Survey Software Definition of Interfaces Web portal Communication with customers Phone numbers Incentives Privacy policy Questionnaire BP1 BK1 Feedback I (Phase I) Survey Online feedback or written feedback on energy consumption BP2 Feedback II (Phase II) pilot group BP3 Feedback + tariff Survey of control group BK2 all: continuous recording of consumption & utilization of feedback for online feedback Analysis of Nationwide Consumption Interpretation Evaluation Impacts & CO 2 savings

6 Feedback Instruments Web Portal Thematic symposium Hamburg

7 Feedback Instrument Monthly Mail Monthly mail (2 pages) including Daily consumption Weekly consumption Monthly consumption Energy saving tips Thematic symposium Hamburg

8 Intelliekon Sample Overall sample size: 2091 Control group 977 Pilot group 1114 Pilot group web 533 Pilot group mail 581 Thematic symposium Hamburg

9 Evaluation of Feedback Instruments At the beginning of the field trial / 9 mark 1 mark 2 mark 3 mark 4 to 6 mean Information content Web Post ,9 2,0 Usefulness Web Post ,1 2,3 Design Web Post ,1 1,9 Ease of use Web Post ,9 2,0 Comprehensibility Web Post ,8 2,1 values in percent Thematic symposium Hamburg

10 Comparison of Time: Evaluation of Feedback Instruments at the beginning and after 6 months / 10 Both feedback instruments are still evaluated very positively after 6 months Evaluations of information content, design, ease of use, comprehensibility, pressure and concerns about data security remain almost equal Usefulness is evaluated slightly better after 6 months Learning effect due to use of feedback instrument The aspects awakes interest and fun are evaluated somewhat worse after 6 months appeal of novelty decreases over the months Thematic symposium Hamburg

11 Savings through Consumption Feedback Savings of 3,7 % Comparison between pilot and control group For time from trial start (from ) until , duration for each utility partner between 11 and 18 months Longitudinal Analysis of saving effects shows that effect exists also after several months after trial start. Less than expected (Literature) Thematic symposium Hamburg

12 Saved CO 2 Emissions Saved electricity if extrapolated to all German households: Savings of 3,7 % in households relate to app. 5,2 TWh electricity demand 5,2 TWh relate app. 1,1 % of total German electricity demand Decreased electricity demand reduces generation from following power stations: Coal: 2,7 TWh Gas: 2,4 TWh Brown coal: 0,1 TWh Prevented CO2-Emissions sum up to 3,6 Mio. tons per year or 1,2 % of emissions from electricity sector Thematic symposium Hamburg

13 Tariff Trial Tariff from May 2010 at three utility partners Analysis of saving effects from comparison between pilot and control group Additional considering of 3 months before tariff trial start Sample size app. 90 households Monday to Sunday (incl. holidays) 27,4 ct/kwh 15,5 ct/kwh 15,5 ct/kwh Source: Implemented Tariff scheme Thematic symposium Hamburg

14 Saving Effects through Time of Use Tariff Savings of 9,8 % In comparison to control group (Combined effect of feedback and tariff) 6,1% in comparison to pilot group (Effect of tariff only) Time of May until end of July 2010: three months Technical restrictions permitted the consumption analysis of only 53 households Achieved load shifting range between 1-2 % of total consumption Both effects were unexpected Thematic symposium Hamburg

15 Feedback Use Multidimensional behaviour Content preference Frequency Intensity Repetition "Load profile analysts" 14% Clicking mainly hourly data for 2 months "Engaged user" 5% Clicking consumption data for all months and often "Actives" 12% Clicking mainly consumption data for 2 months / 15 Searchers for concrete hints" 24% Clicking mainly energy saving hints in first months "Minimal user" 36% One Log In clicking all content User Cluster from Intelliekon Interested in Energy(saving)" 9% Clicking all content data for several months Thematic symposium Hamburg

16 / 16 Feedback Use and Saving Effects Comparison of user cluster in electricity consumption: The Minimal user saved in average 9,5% The Load profile analysts saved in average 9,7% For all remaining clusters no reliable results could have been obtained Influence of usage duration over months on electricity consumption: No significant saving effect Influence of use of energy saving hints on electricity consumption: Those households which clicked at least once to energy saving hints saved in average 10 kwh (at 125 kwh as total effect) Thematic symposium Hamburg

17 Assumption for Feedback and Tariff / 17 Monthly letter from trustful utility leads to a regular engagement with consumption which can not be achieved with a web portal The effect of the web portal defolds quickly a longterm provision will not increase additionally the savings Tariff participants saved because differentiate prices activate them involvement leads to behavioural changes Thematic symposium Hamburg

18 / 18 Conclusion and Recommendations Strategy for target groups: Variable technical and non-technical offers and behaviours Non-technical: options for efficient behaviour, goal setting Technical: Internet, Apps, Smart-Home products, Service: Financing through savings (Contracting) Practical implementation of different options should be accompanied by suitable frame conditions, i.e. incentives ( result tariff) Recommended: Electricity consumption information for all In parallel target group oriented User have different needs, wishes and motiviation therefore choice of different options If no choice takes place: Monthly printed electricity consumption information with conventional mail Thematic symposium Hamburg

19 / 19 Thank you for your Attention Further papers under German and English brochure with all results and conclusion available Thematic symposium Hamburg