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how is "Surplus Electricity Going To Utility" calculated?

asked 2017-12-05 03:48:46 -0600

oat gravatar image

updated 2017-12-05 15:12:34 -0600

May I ask how Surplus Electricity Going To Utility is calculated as reported in the Electric Loads Satisfied table in the html file ?

May I also ask why Net Electricity From Utility is not equal to Electricity Coming From Utility minus Total On-Site Electric Sources?

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Please tag with the specific software you're using if appropriate (energyplus here), and do not include greetings (thank you, hello, etc), per our convention. Thanks!

Julien Marrec gravatar imageJulien Marrec ( 2017-12-05 09:05:06 -0600 )edit

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answered 2017-12-05 08:56:55 -0600

updated 2017-12-05 09:02:10 -0600

At times your On-Site production is exporting to the grid because it is higher than the demand it needs to cover.

So in all, you bought from the Utility 1,436,312 kWh, but you also exported 6,236 kWh, so the Net is difference between the two, so 1,430,075 kWh.

If you didn't have On Site production, you would have bought 1,430,075 kWh + 284,130 kWh = 1,714,205 kWh.

Check out the Engineering Reference for Whole-Facility Electric Service

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Thanks, Julien. The table shown above is for a scenario in which we have "on-site production" through PV, if that is correct. So, should the net purchased electricity in this case be "1,430,075 = 1,714,205 - 284,130" (in kWh)?

oat gravatar imageoat ( 2017-12-15 23:40:35 -0600 )edit

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Asked: 2017-12-05 03:48:46 -0600

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Last updated: Dec 05