Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Saving energy with smart plugs June September Jochem Floor  Luleå, march 16 th , 2011 kWh / hour
Electric  transport Smart  Cities Decentral  generation Grid operator Liander facilitates transition to sustainable energy...
Liander office and consumers measure and manage the energy use of appliances and lighting with smart plugs A network of sm...
Overview of total energy usage and quick technical feed-back may improve user experience and effectiveness <ul><ul><li>Con...
Day  1 – 14 15 – 28 29 – 42 43 – 56 57 – 70 Consumers saved 3,5% on average; the more actively engaged consumers were more...
Liander office usage comparable to one hundred households:  Watt  can we do about that? <ul><li>3  floors </li></ul><ul><l...
Energy-aware employees say saving energy is a logical future societal task for Liander Word cloud from  www.wordle.net  ba...
1260 smart plugs on nearly all appliances and lighting measure energy use and save energy NB: (1) Not measured: servers, p...
Computers, lighting and copiers use 83% of the measured energy usage during office hours We measure about 30% of the  tota...
40% of the energy usage outside office hours is due to computers and screens 15 May – 12 June 11800 kWh Lighting 8% Comput...
Candy and coffee machines use most energy individually; there is large saving potential outside office hours Candy Machine...
Smart switching leads to 13% energy savings; switching off computers would additionally save 5% Smart switching  appliance...
Word cloud from  www.wordle.net  based on interviews with employees Employees call energy management pilot positive; hardl...
Improved contact with employees stimulates energy saving and improves troubleshooting of new system <ul><li>- Information ...
E-saving behaviour can contribute to energy saving; untapped potential in improved insight and  <ul><li>Insight into total...
Future projects involve effective energy management and focus on user retention Idea Set up Experiment Future projects Tod...
Thank you for your attention! Questions? Remarks? [email_address]
During the pilot Liander-life goes on as usual, which leads to creative solutions… … and now we  do  have socket space. Ca...
Employees were informed about the pilot to create energy awareness, with limited results Commu- nication Response On locat...
Smart switching saves 1070 kWh per month, mainly on powerful appliances The existing light pulse saves  approximately 430 ...
Upcoming SlideShare
Loading in …5
×

Saving energy with smart plugs Jochem Liander

1,433 views

Published on

Published in: Education
  • Be the first to comment

Saving energy with smart plugs Jochem Liander

  1. 1. Saving energy with smart plugs June September Jochem Floor Luleå, march 16 th , 2011 kWh / hour
  2. 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. 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?
  4. 4. Overview of total energy usage and quick technical feed-back may improve user experience and effectiveness <ul><ul><li>Consumers signed up spontaneously or were contacted by telephone </li></ul></ul><ul><ul><li>Retention limited for solicited participants (target!) </li></ul></ul>Finding participants System System usage <ul><ul><li>Retention limited by complexity of installation </li></ul></ul><ul><ul><li>Helpdesk not yet up to speed </li></ul></ul><ul><ul><li>Technical feedback and troubleshooting will improve consumer experience </li></ul></ul><ul><ul><li>Computer, TV, Washing machine, Drying </li></ul></ul><ul><ul><li>laundry and Lighting </li></ul></ul><ul><ul><li>Feedback difficult to interpret </li></ul></ul><ul><ul><li>Demand for total energy use overview </li></ul></ul><ul><ul><li>Switching schemes were complicated and </li></ul></ul><ul><ul><li>therefore not often used </li></ul></ul>The World Cup football was an important factor in consumers’ energy usage
  5. 5. Day 1 – 14 15 – 28 29 – 42 43 – 56 57 – 70 Consumers saved 3,5% on average; the more actively engaged consumers were more effective <ul><li>To improve savings: </li></ul><ul><li>- Include overview of total </li></ul><ul><li>energy usage (connect PW </li></ul><ul><li>with smart meter) </li></ul><ul><li>Advise users on optimal </li></ul><ul><li>appliances to connect </li></ul><ul><li>Include non-pluggable </li></ul><ul><li>appliances and lighting </li></ul><ul><li>Improve interface usability </li></ul>None < 10% > 10% Energy Saved Number of clicks Interface usage vs energy savings 25 20 15 10 5 0
  6. 6. Liander office usage comparable to one hundred households: Watt can we do about that? <ul><li>3 floors </li></ul><ul><li>4900 m 2 </li></ul><ul><li>200 work places , 3 meeting rooms </li></ul><ul><li>server space, kitchen and canteen </li></ul>Liander Office Energy Usage May Elektricity: 31 700 kWh per month 175 ton CO 2 per year* 3000 m 3 Gas: 24 000 kWh per month 65 ton CO 2 per year 100 households or 755 trees # *Nuon energy mix # For annual uptake of 230 kg CO 2 per tree. Measure and Switch <ul><li>Computers </li></ul><ul><li>Monitors </li></ul><ul><li>Copiers </li></ul><ul><li>Drinks- and candy machines </li></ul><ul><li>Lighting </li></ul>
  7. 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
  8. 8. 1260 smart plugs on nearly all appliances and lighting measure energy use and save energy NB: (1) Not measured: servers, phone system, air conditioning, emergy and fixed lighting. Experiment (2 x 4 weeks) Reference measurement (4 weeks) <ul><li>1260 plugs on all pluggable 1 </li></ul><ul><li>appliances and lighting </li></ul><ul><li>Hourly usage in kWh </li></ul><ul><li>Usage analysis per appliance type </li></ul><ul><li>daily profiles </li></ul><ul><li>baseline energy usage </li></ul><ul><li>savings potential </li></ul>Smart switching saves energy Energy use Desktop computers
  9. 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. 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. 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. 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. 13. Word cloud from www.wordle.net based on interviews with employees Employees call energy management pilot positive; hardly noticed energy management
  14. 14. Improved contact with employees stimulates energy saving and improves troubleshooting of new system <ul><li>- Information on the project (goal, status quo, helpdesk) hardly reaches employees, despite communication effort (flyers, e-mails) </li></ul><ul><li>- Measuring and saving energy requires insight into work place management during project </li></ul>Pilot project Saving behaviour System <ul><li>Personal contact could stimulate insight and motivate employees to save energy </li></ul><ul><li>- Switching off PC’s after hours has strong savings potential, but is a hassle for employees due to long start up </li></ul><ul><li>- Fast installation of plugs requires accurate inventory and planning </li></ul><ul><li>Monitoring and maintenance of system requires external ICT-access: support from ICT-department is essential! </li></ul><ul><li>Effective savings measures on lighting (light pulse) are hard to combine with wireless network that uses tension of light socket </li></ul>
  15. 15. E-saving behaviour can contribute to energy saving; untapped potential in improved insight and <ul><li>Insight into total and relative energy usage required to enhance user experience and stimulate e-saving behaviour; </li></ul><ul><li>Motivation of consumers and employees to save energy to be enhanced by ‘e-saving ambassadors’. </li></ul>E-Saving behaviour Managing Energy Use <ul><li>Offices have a strong nighttime electric energy saving potential; </li></ul><ul><li>Untapped potential in heating and air-treatment; </li></ul><ul><li>Building efficiency management to include motion detection, temperature and humidity sensors; </li></ul>Stimulation of e-saving by feedback on electricity and heating energy use is tested now
  16. 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. 17. Thank you for your attention! Questions? Remarks? [email_address]
  18. 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. 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. 20. Smart switching saves 1070 kWh per month, mainly on powerful appliances The existing light pulse saves approximately 430 kWh per month

×