28.0 Reference: Application, Vol. II, Tab F, pp. 14, 43 Residential Forecast - Methodology

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1 British Columbia Utilities Commission Information Request No Dated: 23 January 2004 British Columbia Hydro & Power Authority Response issued 20 February 2004 British Columbia Hydro & Power Authority Revenue Requirements Application 2004/05 and 2005/06 Page Reference: Application, Vol. II, Tab F, pp. 14, 43 Residential Forecast - Methodology The Application summarizes that the residential forecast methodology is based on the number of residential accounts times the rate of use. The use rates are based on billed data as anchor information, combined with data from the REUS survey used as inputs to the REEPS model Please explain the data collection process in REUS by including a brief description on how the sample is updated each year. Please provide a copy of the survey. RESPONSE: The REUS provides the level of appliance use in British Columbian homes for the REEPS model. Energy use data from REUS are analysed and cross-tabulated against the region and dwelling types specified by survey respondents. This provides data in a form that is compatible with REEPS such as appliance saturation levels. A copy of the most recent survey is attached. Appliance efficiencies are updated using information from the Office of Energy Efficiency, Natural Resources Canada. Once the survey data are updated in the model, it is validated through calibration of the model against historical billed sales by housing type and region. The most recent residential survey was undertaken in March 2003, and a copy of the survey is attached.

2 March 27, 2003 Dear Participant: You have been selected at random from our list of BC Hydro customers to be part of a very important energy survey. This study wil help us forecast the supply of electricity and services that you and other British Columbians wil need in the next few years, including ways to help consumers manage their electricity costs. Synovate, an independent research company, is assisting us in conducting this survey. Your responses wil be treated as confidential to BC Hydro and wil be compiled anonymously with those of other customers. Please have the questionnnaire filled out by the person who makes most of the decisions about the purchase of major household appliances. However, if someone else in your household knows the answer to a particular question, he or she can reply to the question. If you prefer an electronic version of the survey instead of the print copy, please complete the survey at com/survev0303 To be sure your opinions are included, please return your completed questionnaire (or electronic version) to Synovate by April 18th, As an added incentive to complete your questionnaire, your name wil be entered in a draw for one of four $ aift certificates to the home improvement retailer of your choice. Should you have any questions about how to complete or return your questionnaire, please call Albert Christensen, Research Manager, Synovate at (604) in Vancouver, or outside the Lower Mainland, call toll free, If you have any questions about why BC Hydro is conducting this research, please call Shashi Maharaj, BC Hydro, at (604) , (collect if outside the Lower Mainland), for assistance. Thank you for your cooperation and prompt response. Your opinions are extremely important to us. Yours truly, G22 Richard Marchant Manager Power Smart PowerSmart, Suite Kingsway, Burnaby, BC V5C 1 Telephone Fax ww.bchydro.com

3 BC hydro Residential End Use Survey Dear Participant: Throughout this questionnaire, when we ask about your home or residence, we are referring to the area covered by your BC Hydro bil at this address (on the front page of this survey). If you live in an apartment or townhouse complex, please do not include building hallways or outside lighting which are not covered by your own BC Hydro bil. The information you provide will be kept confidential and will be summarized with all other customer responses. About Your Home Do you own or rent your home? Own/co-op (continue) Rent (go to question 3) Do you pay maintenance fees? Yes (continue) No (go to question 4) Which of the following are included in your rent or maintenance fees? Heat Hot water Natural gas for fireplace None of the above What type of dwellng do you live in? Single detached house Duplex Row/townhouse (3 or more units attached, each with separate entrance) Apartment/condominium Mobile home Other (please specif) When was your home built? Before Don t know What type of basement does your residence have? No basement (go to question 8) Crawl space Full basement Partial basement Is the basement area of this home finished? Unfinished Partly finished Completely finished

4 -- What is the total floor area of this home? (include basement and unfinished areas; exclude the garage/carport) Square feet Square meters How many floors of heated living space does your home have? of floors 10. If this home is an apartment or condominium, how many stories does your building have? (not including underground parking) of stories for this building (not including underground parking) 11. Does your BC Hydro bil cover only your household, or is more than one suite or household on the same account? My household only Other suite(s) as well 12a. Please indicate below which areas of your home have insulation and if you know, whether the insulation is below average, average or above average? Below Average Average Above Average Don (R6 or 1.75" (R12 or 3. (R20 or 6" Don Location Yes know fibreglass fibreglass fibreglass know In the attic In your walls In your basement 12b. Please indicate how effective the draftproofing in your home is: or less) or less) or less) Not at all drafty Sometimes drafty Always drafty 12c. Please estimate what percentage of your windows are: % of Total Windows Single glazed regular glass Double glazed regular glass Double glazed low E glass Triple glazed regular glass Triple glazed low E glass Total

5 12d. Please estimate what percentage of your windows have the following frames: % of Total Windows Aluminium frames Wood frames Vinyl frames Other (please specify) Total 12e. How many of the following types of outside doors does your home have? If you live in an apartment or townhouse, please do not include doors that lead to an inside hallway. of Outside Doors Standard wood doors Standard wood doors with aluminium storm doors Insulated steel or fibreglass doors Glass doors with wooden frames Glass doors with aluminium frames 12f. How many of the following do you have in your home? Programmable thermostats Bathroom fans Kitchen fans (ie. hood vents, rotating ceiling fans) in home Space Heating 13. Please indicate (.I) the fuels used to heat your home. If you use more than one fuel, indicate the fuel used to heat most of your home as main, and any additional fuel as other Main Fuel Other Fuels Electricity (including portable heaters) Natural gas Piped propane Bottled propane Wood Oil Don t know Other - please specif 14. How many rooms do you heat in your home altogether? (Do NOT count bathrooms, closets or hallways) Total number of heated rooms

6 15. Please indicate (.I) the main heating system you use to heat your home. If you use more than one heating system, indicate the system used to heat most of your home as the main system, and any additional systems as other systems. Both furnace & electric baseboards Furnace (central forced air only) Electric baseboard only Hot water baseboards Hot water radiators Portable electric heaters Heat Pump - air source Heat Pump - ground source Wood Stove Wood fireplace (used for heating) Gas Fireplace (used for heating) Dual fuel furnace Electric radiant ceiling or floor Hot water radiant floor Other - please specify Main System Other Systems 16a. In the past 2 years, have you purchased a furnace? Yes (continue) No (go to question 16c) 16b. Doe's your new furnace have a high effciency motor (often called variable speed drives or ECM)? If you are not sure, please keep in mind that energy effciency motors cost significantly more than regular motors. Yes 16c. How often does your furnace fan blower operate? Only when furnace is operating Continuously during the heating season to provide ventilation Continuously year round to provide ventilation Other (please specif) Don t know 17. Have you changed or modified your home heating system in the last two years? Yes, added electric baseboard heaters Yes, added natural gas furnace or boiler Yes, added portable electric heater(s) Yes, added electric fireplace Yes, added radiant baseboard heaters Yes, added propane heater(s) Yes, added natural gas fireplace Yes, added other (please specify), have not changed my home heating system in the last two years.

7 Water Heating 18. What is the main fuel used to heat the (main) hot water tank in your home? Elecricity 0 Oil Natural gas Solar Other (please specify) Piped Propane Don t know Botted Propane Home does not have a hot water tank (heated centrally) L. Ifheated centrally go to next section on lighting 19a. What size is the largest hot water tank in your home? Less than 30 imperial gallons (under counter) or 1351itres 30 to 39 imperial gallons or 135 to 180 litres 40 to 59 imperial gallons or 181 to 270 litres 60 or more imperial gallons or 271 litres Don t know 19b. Approximately how old is your hot water tank? 20. of years Don t know Have you changed your hot water heating fuel in the last 2 years? Yes, from natural gas to electricity Yes, from electricity to natural gas Yes, from oil to electricity Yes, from propane to electricity Other (please specif from 21a. Please indicate how many of the following you have in your home: Total number of showerheads of low flow showerheads of water heater blankets 21b. The following questions pertain to how your household uses hot water. Your responses to these questions are important factors in BC Hydro s calculation of how much energy is being used by households. Total number of dishwasher loads per week Total number of laundry loads per week Total number of baths (taken by household) per week Total number of showers (taken by household) per week

8 Lighting Currently, BC Hydro estimates that about 10% of your energy costs go into lighting your home. Using energy effcient lighting represents one of the easiest ways to reduce consumption and your energy bill. In this section, BC Hydro wil confirm how much electricity is used for lighting and how customers are changing the way they light their homes. For each of the following major areas in your home, please indicate: A) the number of each type of bulbs/lamps, and B) the average hours per day when the lighting is on in each area. For example, if you have halogen torchiere lamp, you would indicate this under both the halogen bulb column and the torchiere lamp column. Please remember to include all areas in your home that are covered by your BC Hydro bill at this address, such as basements and secondary suites. Incandescent Light Bulbs #Qf. AJg. holirs bulqs. OiL in use. p$deiy Fluorescent. AviJ.(# : #of. h(ur$' # of bulbs. on ' : bulbs ir\!s per Qay iii li Compact Fluorescent. Avg:#. hpuf" # of. ori... bulbs, :perdayliiu Halogen Other Types of Light Torchiere #Of 113mps Avg. houn; on.. dew.

9 -- ( ) 31. How many outdoor light fixtures do you have that are equipped with the following? (Only count those lights you pay to operate. IF YOU DO NOT HA VE ANY OUTDOOR LIGHTS, CHECK HERE Equipped with a motion sensor (turns on when movement is detected) Operated by a photo electric cell (turns on or off automatically by sensing outdoor lighting levels) Combination of motion sensor and photo elecfric cell Set on a timer (always set) Solar/battery operated AND GO TO QUESTION 32 in use 32. In the past 12 months, have you purchased a compact fluorescent light bulb or received a free one? Yes;:;: How many in total have you purchased or received? No. 33. Of the total compact fluorescent light bulbs you have purchased or received, how many have you actually installed in a light fixture? # installed ;:;: IF YOU DO NOT HAVE ANY COMPACT FLUORESCENT LIGHTS INSTALLED, GO TO THE NEX SECTION ON APPLIANCES (Question 38) 34. How satisfied are you with the performance of the compact fluorescent light bulb(s) currently in your home? 35. Very satisfied Somewhat satisfied Neither satisfied nor dissatisfied Somewhat dissatisfied Very dissatisfied When one of your compact fluorescent light bulbs burns out, how likely are you to replace it with another compact fluorescent light bulb? Very likely Somewhat likely Not very likely Not at all likely 36. Do you have any permanent compact fluorescent light (CFL) fixtures in your home in which you can only use compact fluorescent bulbs? Yes, I have number CFL fixtures, I don t have any 31a. The following question wil help us estimate the electrical consumption of holiday lights. If you don t have any holiday lights, please check here ( ) and go to question 38. Please indicate how much of your total number of indoor and outdoor holiday lights you put up in the 2002 holiday season? 37b. All of them (100%) Most (75-99%) A fair amount (51-74%) Some (25-50%) Few (less than 25%) None (0%) Indoor Outdoor If you put up any outdoor lights, did you disconnect or remove any of your regular outdoor lights? Yes;:;: How many lights did you disconnect/remove?

10 Appliances The amount of electricity BC Hydro produce that goes into operating household appliances varies greatly from home to home. Your answers will help us to predict how much electricity we wil need to produce to accmmodate appliance use. Please provide an answer only for appliances and items covered by your home s BC Hydro bil. 38. Please indicate below the number of each appliance in your home that you use at least occasionally. Computer, no internet connection Computer, telephone dial-up internet connection (56K or less) Computer, high-speed internet connection (ADSL, cable or other) Computer, don t know internet connection speed Colour television - smaller than 32" screen Colour television -32" screen or larger VCR DVD Fax machine Computer printer Surround sound system Audiolentertainment system Other (please specif) in use 39. Please indicate below the number of each appliance in your home, when you purchased the appliance, if it was purchased new and for the refrigerator(s), whether or not it is Energy Star. Please indicate when you purchased the appliance using the following codes: Dec 2000 Jan-Mar Apr-Jun July-Sep Oct-Dec Jan-Mar Apr-Jun July-Sep Oct- Dec Jan 2003 or earlier to present Refrigerator automatic defrost Upright freezer, not part of a fridge Chest freezer, not part of a fridge

11 IF YOU HAVE MORE THAN ONE REFRIGERATOR, PLEASE CONTINUE. IF YOU HAVE ONE REFRIGERATOR, GO TO QUESTION Do you ever unplug your second refrigerator? Yes 41. If you knew that your second refrigerator was costing over $ per year to operate, would you unplug that refrigerator (more often)? Yes 42. How likely would you be to dispose of your second refrigerator if someone offered to pick it up and safely dispose of it for free? 43. Definitely would Probably would Probably would not Definitely would not Please indicate below the number of each appliance in your home and the approximate age of the appliance. If you have more than one appliance, please provide the age of the main one. Electric Range Electric Cook top Separate electric oven Microwave Oven in use Approximate age of main appliance 44. Please indicate below the number of each appliance in your home, when you purchased the appliance, if it was purchased new and for the refrigerator(s), whether or not it is Energy Star. If you have more than one appliance, please provide the year of purchase of the main one. Dec 2000 Jan-Mar Apr-Jun July-Sep Oct-Dec Jan-Mar Apr-Jun July-Sep Oct-Dec Jan 2003 or earlier to present Automatic dishwasher in use When purchased main appliance (Use codes 1- from above) Energy Star Don Yes No know Clothes washer-top load Clothes washer-front load Electric clothes dryer Natural gas or propane clothes dryer

12 45. Please indicate below the number of each appliance in your home and which months of the year the appliance is usually in use. If it is in use all year round, write in Jan - Dec. Central air conditioner Room air conditioner Humidifer (in regular use) Heat pump Dehumidifier (in regular use) in use Usual Use From (month) (month) 46. Please indicate the number of each of the following items that you have at/in your home: Water bed heater Electric hot tub, whirlpool or Jacuzzi (including Jacuzzi bathtubs) Electric car block heater (plugs into an outlet) Electric interior car warmer (plugs into an outlet) About Your Household 47. Thinking about major appliance purchase decisions in your household, please indicate your role in the decision making process. I am the sole decision maker Someone else in the house makes decision solely L.Please indicate if sole decision maker is: Female or Male Decisions are made jointly between myself and another person 48. Your age is: 18 to 24 years of age 25 to to You are: Female 45 to to or older Male 50. Your education is: Less than Grade 12 High school diploma Some college, vocational or technical school College, vocational or technical school graduate Some university/university degree Don t know/refused

13 51. Please indicate the number of people living in your household on a full-time basis, in the following age categories: of people Children 0-5 years of age Children 6-12 Young adults Adults Adults 65 or older Total 52. Please indicate the combined total income before taxes for your household in the last year. Under $ $ to under $ 40,000 $ 40,000 to under $ 60,000 $ to under $ $ to under $ $ 120,000 or over 53. Do you or anyone in your household use part of your home as a full-time or part-time offce from which they conduct a business? Yes, full-time business Yes, part-time business 58. One objective of this survey is to better understand how a household's energy bil may vary depending upon how energy effcient the household seems to be. Rather than asking you to estimate, for example, how much energy you have consumed over the past year, BC Hydro would like to access this information from your account history and link it to the responses you ve given today. May we please have your permission for BC Hydro to do this? Yes the THANK YOU. Your input is appreciated and wil help in planning electricity services for your community and the province as a whole. Please mail completed survey in the postage paid envelope provided to Synovate by April 18, 2003 or if you prefer, complete the on-line version at: bchvdro.com/survev0303 Your name wil be entered with other completed surveys into the draw for one of four $ gift certificates to a home improvement retailer of your choice. If you have any questions about how to complete or retum your questionnaire, please call Albert Christensen Research Manager, Synovate at (604) in Vancouver, or outside the Lower Mainland, call toll free, If you have any questions about the validity of the survey, please contact Shashi Maharaj, BC Hydro, at (604) (collect if outside the Lower Mainland). BChydro