Household Energy Consumption

A household uses the appliances listed in the table below.

a) Using the table and data below, calculate the household's total load (energy consumption) in a given week.

Appliance: Quantity: Watts: Hours used per day: Used kWh in one day: Used kWh in one week:
Coffee Maker 1 900 1    
Dishwasher 1 1200 1    
Microwave oven 1 750 1    
Refrigerator 1 725 24    
TV 2 130 3    
Laptop 1 50 8    
Energy-saving light bulbs 10 23 (per bulb) 12    

Total load in one day: ______ kWh

Total load over one week ______ kWh

b) Using GRIDc data from last week, how much energy could be produced by the Solar House's renewable energy systems? You may want to learn about Instantaneous vs Cumulative. You will have to calculate how much energy was produced for the entire week.

ex. 1/01/2009 to 1/08/2009

System: 1(kWh) Day 2 (kWh) Day 3 (kWh) Day 4 (kWh) Day 5 (kWh) Day 6 (kWh) Day 7 (kWh) Total (kWh):
PV Energy Produced (Garage) 1,291.53 1,294.08 1,298.40 1,302.80 1,306.67 1,310.470 1,314.89 23.36
PV Energy Produced (Annex)

310.42

313.68 318.86 322.01 323.70 326.09 372.69 62.27
Wind Turbine Energy (Annex) 2,324.57 2,330.50 2,340.72 2,351.16 2,360.25 2,3669.23 2,379.58 55.01

 

System: Day 1 (kWh) Day 2 (kWh) Day 3 (kWh) Day 4 (kWh) Day 5 (kWh) Day 6 (kWh) Day 7 (kWh) Total:
PV Energy (Garage)                
PV Energy (Annex)                
Wind Turbine Energy (Annex)                

Total energy produced: ______ kWh

What percent of energy produced from renewable energy systems can supply the load over a week? _______%

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