1. the d.r.e.a.m. device Alex Do Ken Langford Therese Peffer Colleen Whitney

2. The d.r.e.a.m. device I.Background and Project Goals II.Personas and Use Scenarios III.Designing Our Solution IV.Interactive Prototype V.What We Learned

3. I. Background and Project Goals

4. Background  Critical issue: California energy use  New paradigm: not just how much electricity is consumed but when  Demand response electricity … price changes dynamically according to demand  Higher prices at peak use times  Need to communicate dynamic pricing to consumer

5. Project Goals  Develop a demand response enabled appliance manager… aka the d.r.e.a.m. device!  The device will: –Keep track of electricity use and spending –Provide an electricity “price forecast” –Control heating and cooling (thermostat)

6. II. Personas and Use Scenarios

7. Interviews  Who: –10 interviews –Diversity in age, income and educational level, technical proficiency, schedule, geographic location  What we were looking for: –Context of energy use (thermostat/appliances) –Personal information –Goals and attitudes

8. Personas  Diverse set of personas to reflect California users

9. Mabel Walker  70 year old woman  Lives alone in her house in Sacramento  Retired for 5 years  Suffers from arthritis  On a limited income  Goals: Keep comfortable, save money

10. Alison deSilva  38 years old  Teaches middle school biology  Married, two children  Complicated but static schedule  Spacious modern house in Rancho Cucamonga  Goals: Keep herself and family on schedule, save time and money, stay in touch with friends and family

11. Tim Menendez  31 year old single male  Works for county health department  3-bedroom trailer home in Napa  Legal guardian for his 5 year-old nephew  Uses a computer at work, comfortable using electronics  Goals: Complete bachelors degree, provide a safe home environment for his family, conserve where he can

12. Brad Anderson  27 year old single male  Associate merchandising manager  Works 9 to 5:30  Substantial income for his age  Pays bills on time, but doesn’t always keep track of finances  Rents a small house in Santa Monica with his roommate  Goals: Don’t worry about too many details in life, stay on top of what’s going on, pay bills and keep enough money to hang out, be environmentally conscious

13. Sue Howl and Tom Green  Middle-aged professional couple  She is a litigation lawyer; he is a surgeon  Live in brand new sprawling Los Altos Hills house with a home automation system  Like to work hard, play hard, travel  Argue over the temperature of the house  Goals: Fit everything in the schedule, have fun, be comfortable

14. Mabel: Dynamic Pricing  It’s a hot summer day. Having friends over in the evening for cards.  Uses the d.r.e.a.m. device to check her electricity budget.  Notices that price will be high in two hours.  Decides to do chores immediately and changes her baking plans.  Turns on the ceiling fan on, plans to start air conditioning just before the ladies arrive.

15. Brad: Budget and Usage  Brad blows his budget on a ski trip, needs to save money.  Sets a budget in the d.r.e.a.m. device.  Checks usage trends to review energy costs.  Works with his roommate to identify ways to save.  Checks projected bill regularly to monitor progress.

16. Alison: Preparing for vacation  Preparing to leave on summer vacation  Hot summer day, high price  Plans activities to avoid peak pricing  Sets d.r.e.a.m. to “away” mode

17. III. Designing Our Solution

18. Comparative Analysis  Thermostats  Sprinkler Timers  Home Monitoring/ Automation  Electricity Monitoring  Price Alerting

19. Early Designs  3 distinct styles in initial designs: –Enhanced Thermostat –Multi-screen –PDA

20. Early Designs: Thermostat

21. Early Designs: Multi-screen

22. Early Designs: PDA

23. “Frankendesigns”

24. Low-Fidelity Prototype

25. Low-Fi “Features”: Left Side  Traditional feel; “classic” functions  Mechanical inputs  Color screen mimicking analog dials

26. Low-Fi “Features”: Right Side  Stylus input  Tabs for navigation  Color screen  “Screen saver” displays digital photo

27. Results of Low-Fidelity Testing  Separation of basic and advanced functions (left side vs. right side) worked well  Price forecast was confusing  7-day and 30-day usage graphs not informative  Setting temperature and schedules were fairly difficult tasks –New model of price-adaptive temperature settings –Relationship between schedule and temperature

28. IV. Interactive Prototype

29. Changes to Low-Fidelity Prototype  New format and location for price forecast  Reduced number of tabs  Temperature and Schedule collapsed to one tab  New interface for temperature setpoints  Information presented in usage charts

30. Demo of Java-based Interactive Prototype

31. Morning: check forecast

32. Price high: what to do

33. Paying bills: get info

34. Check long term usage

35. Set temperature setpoints

36. Not Implemented in First Interactive Prototype  Settings: non-functional right now –Temperature and Schedule mocked up  Interactive setup wizards  Messages  Help  Audio  System settings: –Upload digital photo for Home –Add satellite devices –Enable audio

37. V. What We Learned

38. Biggest Thing We Learned  Our mental model is not the same as each of the users we will encounter –Our user base is enormous –Who are the fringe users?

39. Questions?

40. Supplementary Info  Links to: –Task Analysis Chart Task Analysis ChartTask Analysis Chart –Comparative Analysis Comparative AnalysisComparative Analysis –Interaction Flow Interaction FlowInteraction Flow

41. Tim: Setting up the Device  Just moved into a new trailer.  Needs to program his d.r.e.a.m. device.  Enters information about each day’s routine.  Enters budgeting information.  Interested in controlling expenses.  Sets the d.r.e.a.m. to run in automatic mode.