Sunday, July 29, 2007

Hmmm. I'm looking over the new utility bill. This one covers the period 6/13 to 7/13.

Again, we've made a mid-cycle change. I finished the project on July 3.

This year's usage is 2062 kW compared to last year's 2278 for the same period -- a savings of about 9.5 percent.

We still haven't done the ceiling work which will entail sealing up the leaks around the air supply boots and recessed lights. I plan to do that this week.

According to my calculations (100w X 24 hours X 30 days=72,000w, 72,000/1000w=72kW), changing out the recessed light bulbs over the bar should save up to 72 kW a month, which is nothing to ignore -- about 3.5 percent of this month's usage.

After that, there's not a lot more we can do before we replace the old clothes dryer when it's needed. It would no doubt help to replace the air-conditioning unit we bought in 1996, but it's working fine.

Our base electrical load, i.e. without the air conditioner, was as low as 1011 kW in the winter months. The bill covering 7/13 to 8/13 is historically the highest around here. Yikes, you should have seen it when we had the swimming pool.

Mr. Byrd, the auditor, said that given the shade around this house, the new insulated windows will likely show their utility more in the winter months when we will be comparing natural gas usage.

This post begins my sixth year of blogging.

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