Electricity. Solar power. PV. EV.

Nov 28, 2021 10:59


Electricity. Solar power. PV. EV.

One of the houses in my neighborhood recently purchased a Tesla Model 3, so that is one more EV nearby. The same house installed a PV solar system, a big one. I counted about 25 panels on three sections of their roof. *huzzah!*

So, I might guesstimate PV houses in the few blocks surrounding where I live could now be 0.5%. One out of every two-hundred houses. The number of EVs might be approaching 1%.

So, decided to see where I am at, on electricity consumption, and the energy used by the window fans I use often (many hours-per-year of use).

On 2021-11-19, the utility electricity meter on our house indicated 73,153kwh.

Used my killawatt meter to measure two window fans I use to ventilate the house (the house we rent as no HVAC, just window A/Cs and a floor furnace).

  • Small white dual fan window fan, on HIGH: 40watts
  • Lasco brand 20" high-output fan, on LOW: 70watts
  • Lasco fan on MEDIUM: 90watts


***

The most recent entry in this journal tagged with "kwh" was 2015-01-15, with a kwh meter reading of 31,172kwh.

Using my timediff program, the number of days between 2015-01-15 and 2021-11-19 is: mrflash818@pip2:~/projects/cplusplus/timediffcpp$ ./timediff 2021-11-19 2015-01-15 2500days (exactly 2500days?! It made me think I had an error in the program, so I verified using LibreOffice calc. Calc gave the same result. It's 2500days. trippy!) The power consumption difference is 73153 - 31172, so: mrflash818@pip2:/tmp$ echo $((73153 - 31172)) 41981kwh 41981kwh/2500days = 16.8kwh/day. 16.8kwh/day / 24hrs = 0.7kwh/hr, for my power consumption over the interval, assuming utility meter is the same one during the interval, etc.
So, for a family of five, I am feeling we are doing "not bad" in our electricity usage, so far.

kwh, electricity, killawatt, utility, timediff, pv, 2021, ev

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