PV system generation

Bill.Thomson · 2018-12-03T18:55:54.631Z

Using RobotDyn Uno + ESP board with EmonESP

ps: just to make you all jealous, my Solar system produced 54Kw today! Lovely, sunny Australia.

Not too jealous. Two days ago, (1 Dec) mine did 51 kWh.
Not bad for late fall production.

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Bramco · 2018-12-03T19:02:03.498Z

Using RobotDyn Uno + ESP board with EmonESP

Not bad for late fall production.

But you’ll have to go to bed earlier - that spike at 1:40 has to be the kettle going on for the hot chocolate. Helluva kettle to take 5.5kW mind you. Must boil quickly.

Simon

Bill.Thomson · 2018-12-03T19:17:48.157Z

Using RobotDyn Uno + ESP board with EmonESP

that spike at 1:40 has to be the kettle going on for the hot chocolate.

Hi Simon,

The spike at 0140 (and again at ~0900) is one of two 40 gallon water heaters.
I have an all electric house, hence the PV system.

Bramco · 2018-12-04T08:25:51.124Z

Hi Bill, I wouldn’t make a detective would I!

I know the spikes are only short but because they are short couldn’t you prevent them happening by only enabling heating during times when you might be generating. You can manage this kind of thing in node red with timers that tell you when it’s daylight and dusk.

OT I know but just a thought.

Simon

Dougo · 2018-12-04T10:05:30.731Z

Ot, but its only a matter of time until we are charged for ‘peak demand’ (as the Industrial users are already charged). This is one reason I am thinking of future batteries, so I can reduce peak demand, as well as exporting battery to the grid when I receive a ‘premium’, or otherwise just using during peak evening demand. I will move my cooking to all-electric soon (Induction cooktop). atm, I use gas, but we use the ‘caravan’ bottles (8.5Kg) that last us 6-8 weeks, at $Au22 to recharge, so hardly worth changing.

regards, Doug

Bill.Thomson · 2018-12-04T14:40:53.913Z

Bramco:

I know the spikes are only short but because they are short couldn’t you prevent them happening by only enabling heating during times when you might be generating.

Not a bad idea, but the w/h uses only about 2 kWh a day. Viz:

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The large “spike” is actually a doubled up reading. A couple of raccoons got in my garage
(yours truly left his garage door open late one evening. You can bet I won’t do that again!)
and being the destructive little varmints they are, managed to disconnect the power to the RPi
that resets my WattsOn kWh meter.