Not really a hassle. I do need to shut it down, plug in the meter, plug in the machine to the meter and reverse the process when finished. It, along with all of my other server class machines, run in an outbuilding away from the house. They all run 24/7 so I don't often shut any of those machines down. However, I too am curious about the power draw. So in the next few days I will shut down those systems one by one and see what they do draw.
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Edit:spelling

Good call Bearcat - I hadn't thought of that. This Windows Defender issue may push me to explore that further. A little less convenient to have to reboot to switch between the OSes, but the hopefully rock-solidness of Linux may be worth it.

SD Surfer, I've had a lot of fun with mine over the years! There are many newer models with more features out now, but the 'P3 P4400 Kill A Watt Electricity Usage Monitor' for ~$31 is what I have several of and it does the basics just fine: https://www.amazon.com/P3-P4400-Electricity-U...qid=1616377141&sr=8-5

I am not that good with electricity, but I suspect a resistor has gone wonky in it.
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Definitely lively, kind of techno pop I think.
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I got the Kill-O-Watt meter out and tested the T620 with the dual Xeon E5-2665's. On a full load of 32 threads it takes 270 watts. It has averaged about 114,500 points per day. It costs me a little less than about $1.00 per day to run this machine. So that would be about 120,000 points per dollar. It would also be about 17,600 WCG points per kilowatt hour. It would be 2,514 boinc points per kilowatt hour. So the Intel i7-10700F is roughly about twice as efficient as my T620. It will cost me roughly about $350 per year for electricity for this machine. I did a little rounding, but the figures are close enough, precision to a couple of decimal places is unnecessary for this.
I hope this is the information for which you are looking.

Edit: On a per unit basis, it costs me about .47 cents. ($.0047/unit). U.S. Dollars.
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