30% Challenge
30% Challenge
Did you know that if 30% of the worlds Population reduced their shower time by 30% we could reduce the amount of CO2 released into the atmosphere by about 168 Million tons. That's huge.
Here are the Details
To estimate the CO2 savings if 30% of the world's population reduced their shower time by 30%, we need to consider the energy used to heat the water, which is the primary source of CO2 emissions in this context. Here's a step-by-step approach:
1. Assumptions and Data Needed
- Global Population: Approx. 8 billion people.
- Average Shower Duration: Varies widely, but let's assume an average of 8 minutes per shower.
- Water Usage Per Minute: About 2 gallons (7.6 liters) per minute with a standard showerhead.
- Energy Used to Heat Water: Approximately 0.1 kWh per gallon (0.026 kWh per liter).
- CO2 Emissions Per kWh: About 0.4 kg CO2 per kWh (varies by energy source, but this is an average for grid electricity).
2. Calculations
- 30% of Global Population: 0.3×80.3 \times 80.3×8 billion = 2.4 billion people.
- Reduction in Shower Time: 30% reduction on an 8-minute shower = 2.4 minutes saved.
- Water Saved Per Person Per Shower: 2.4 minutes×2 gallons/minute=4.8 gallons2.4 \, \text{minutes} \times 2 \, \text{gallons/minute} = 4.8 \, \text{gallons}2.4minutes×2gallons/minute=4.8gallons (18.2 liters).
- Energy Saved Per Person Per Shower: 4.8 gallons×0.1 kWh/gallon=0.48 kWh4.8 \, \text{gallons} \times 0.1 \, \text{kWh/gallon} = 0.48 \, \text{kWh}4.8gallons×0.1kWh/gallon=0.48kWh.
- CO2 Saved Per Person Per Shower: 0.48 kWh×0.4 kg CO2/kWh=0.192 kg CO20.48 \, \text{kWh} \times 0.4 \, \text{kg CO2/kWh} = 0.192 \, \text{kg CO2}0.48kWh×0.4kg CO2/kWh=0.192kg CO2.
If each person takes an average of one shower per day:
CO2 Saved Per Person Per Year: 0.192 kg CO2×365=70.08 kg CO20.192 \, \text{kg CO2} \times 365 = 70.08 \, \text{kg CO2}0.192kg CO2×365=70.08kg CO2.
Total CO2 Savings (2.4 billion people): 70.08 kg CO2/person/year×2.4 billion people=168.2 million metric tons of CO270.08 \, \text{kg CO2/person/year} \times 2.4 \, \text{billion people} = 168.2 \, \text{million metric tons of CO2}70.08kg CO2/person/year×2.4billion people=168.2million metric tons of CO2.
3. Final Estimate
- If 30% of the world's population reduced their shower time by 30%, it could save approximately 168.2 million metric tons of CO2 per year.
- This is a rough estimate and actual savings would vary based on factors like the efficiency of water heating, regional differences in CO2 emissions per kWh, and variations in average shower times.
