It is time at last to curtail my luxury of mindlessly tossing laundry in my natural-gas clothes dryer. The conversion from electric heat in a hand-me-down, free dryer was ticket for ease that I let go through another Summer. What is the amount of my savings opportunity?
I refer first to one of my clothesline shopping discoveries. I will just accept for now that a two-person household, with half-time resort to clotheslines, may save 500 pounds of CO2 per year. The saving is sizable, judging by math for my total carbon footprint, about 20,000 pounds of CO2 per year. Every measure that might save another 1000 pounds of CO2, will be painful.
The cost of a durable, convenient and presentable clothesline seems to be more than $250. How does this pan out in a payback calculation, the Insulation Math?
A therm corresponds to emission of about 12 pounds of CO2. 500 pounds is 42 therms. At $2 per therm, my saving is $84 per year. A $300 clothesline cost is repaid in less than four years, 28% simple return. Worth doing. Worthy of incentives. Spending $300 will not be extravagant.