As you study the costs of electricity generation, you find out that Xcel's cost go up sharply during hot summer afternoons. Back in the days of off-peak, or TOU, rates, PSCO tried to pass the extra cost on to the customers. This pricing scenario has faded out over the years, but may come back.
Evaporative cooling works best at night, so you can accomplish off peak cooling by overcooling your house at night and in the morning. The cheaper coolers hardly work with a daytime temperature above 86F anyway. The thermal mass of your house will then let you coast through the afternoon without using air conditioning at expensive rates.
Evaporative cooling works best at night, so you can accomplish off peak cooling by overcooling your house at night and in the morning. The cheaper coolers hardly work with a daytime temperature above 86F anyway. The thermal mass of your house will then let you coast through the afternoon without using air conditioning at expensive rates.
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