1. Saving energy with smart plugs June September Jochem Floor Luleå, march 16 th , 2011 kWh / hour

2. Electric transport Smart Cities Decentral generation Grid operator Liander facilitates transition to sustainable energy supply. Take energy management, for example Energy management Watt’ s the result? Liander searches for the best method to save energy, in its offices and in the household. Situation Question Research How do offices and households use energy? Can we curb energy waste using energy management systems? &

3. Liander office and consumers measure and manage the energy use of appliances and lighting with smart plugs A network of smart plugs Each plug measures the energy usage of the plugged in appliance The plugs communicate wirelessly at low power Usage is visible live and controllable with personal switching schemes Watt ’s the result?

7. Energy-aware employees say saving energy is a logical future societal task for Liander Word cloud from www.wordle.net based on interviews with employees

9. Computers, lighting and copiers use 83% of the measured energy usage during office hours We measure about 30% of the total energy use in the office 15 May – 12 June 11800 kWh Lighting 27% Computers 42% Copiers 14% Fridges 2% Coffee Machine 4% Candy Machine 1% Other 10%

10. 40% of the energy usage outside office hours is due to computers and screens 15 May – 12 June 11800 kWh Lighting 8% Computers 40% Copiers 17% Fridges 8% Coffee Machine 4% Candy Machine 4% Other 19% Savings potential is 2280 kWh outside office hours

11. Candy and coffee machines use most energy individually; there is large saving potential outside office hours Candy Machine Coffee Machine Copier Ventilation Fridge Washing Machine Water cooler Other Beamer Printer Computer Scanner Charger Monitor

12. Smart switching leads to 13% energy savings; switching off computers would additionally save 5% Smart switching appliances and lighting Lighting 15 May – 12 June 11800 kWh September 10290 kWh Reference Experiment

13. Word cloud from www.wordle.net based on interviews with employees Employees call energy management pilot positive; hardly noticed energy management

16. Future projects involve effective energy management and focus on user retention Idea Set up Experiment Future projects Today Evaluation Focus on User Upgrade setup Energy management pilot

17. Thank you for your attention! Questions? Remarks? [email_address]

18. During the pilot Liander-life goes on as usual, which leads to creative solutions… … and now we do have socket space. Cables well-organised…, … new screens to keep the overview of work…

19. Employees were informed about the pilot to create energy awareness, with limited results Commu- nication Response On location E-mail & Flyers Live data on Intranet Reference vs. experiment “ Interesting, but complicated!” “ Can employees get this system at home?” “ The bathroom light is often on; perhaps we can apply the energy management system there?” “ So the new switch does work!” “ Will I be able to get coffee when I’m working late?”

20. Smart switching saves 1070 kWh per month, mainly on powerful appliances The existing light pulse saves approximately 430 kWh per month