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You are here: Home / Archives for Energy

TED 5000-G Try Two

2014/02/05 By staze

TED 5000-CAlthough I had very little positive to say about the TED 5000 with my last review, after looking at the alternatives, I couldn’t really find anything that matched it’s capability without being the eMonitor (which costs at least 5x as much, and has a subscription fee!). While there are some competitors (one clamps to your meter outside, and a couple use current clamps), none of those also wire into your electrical system to provide actual voltage readings (and therefore power factor). I did get one company to offer a review unit (which I could return if I didn’t like it, or buy for a discount if I did), but it too didn’t provide voltage information, but it also didn’t use Power Line Communication (PLC), so it avoided those issue).

So, knowing that TED (the company) wasn’t going to provide me with a review unit I swallowed my pride, and mailed off a check for the refurbished unit they had offered before.

[Read more…]

Filed Under: Energy Tagged With: Bidgley, Energy, Google PowerMeter, plotwatt, TED

Energy analysis for 2011

2012/01/11 By staze

Another year is done, with 2011 behind us, and another year worth of power data (and for this year, I think I’ll throw in some gas usage data as well in the next post) to look at, and figure out what went well, bad, etc. Of note is that while this year is also a La Niña year, it has been much cooler than last year. We really had no summer at all (summer, by our terms, lasted a couple weeks. Tomatoes this year all ripened within a couple weeks, and late). We haven’t gotten any snow, but we certainly didn’t get many hot days (our hottest day was 91.2F), which now makes 2 years in a row where we haven’t broken 100F. Hopefully this will end after this year (La Niña is only supposed to last 2 years).

Here’s the raw numbers for electricity.

  • Total Energy used in 2011: 10,475.58KWH ($485.02)
  • Average Energy use per month: 872.96KWH ($40.42)
  • Highest energy use day (amount): 2011-12-06 (74.63KWH)
  • Highest energy use month (amount): December 2011 (1498.92KWH)
  • Lowest energy use day (amount): 2011-08-18 (9.28kWH)
  • Lowest energy use month (amount): September 2011 (543.04KWH)
  • Mean (average) energy use per day: 28.7KWH (~ $1.32/day)
  • Median energy use per day: 25.9KWH
  • Mode (most common) energy use per day: 22KWH (had to round this)
  • Highest energy use at a given time: 18.15kW (registered on 2011-02-02 8:03am)
  • Lowest Voltage Recorded: 113.5v (registered 2011-02-02 7:59am)
  • Highest Voltage Recorded: 139.4v (registered 2011-09-12 21:31am)
  • Average Voltage: 121.1v
  • Degree Cooling days greater than or equal to 90F: 2
  • Degree Heating days less than or equal to 32F: 50
  • Number of rows in DB: 525,142

The first number, since it’s largely the most important when looking at data, is the last one: number of rows. 525,142 rows. There are approximately 525,600 minutes in a non-leap year, which means given my number of rows, I have ~99.91% of possible data for the year, or about 0.09% missing. This certainly is an improvement from last year of 99.57% data.

[Read more…]

Filed Under: Energy Tagged With: Energy, KWH

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