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ottopaulsen / node-red-contrib-power-saver

A Node-RED node to saver money by turning off when the power is most expensive
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Find most expensive hours #159

Open Gr1pen opened 1 year ago

Gr1pen commented 1 year ago

I would really like an option to find the most expensive hours. The use case is charging a home battery the cheapest hours, and use that energy the most expensive hours.

shadowano commented 1 year ago

If you are already finding cheapest hours, would the non-cheapest hours be good to say that they are the most expensive hours?

This way you could treat the off signal as a start of expensive hours and on signal as stop for expensive hours. Use a function node to for instance invert the signals.

You could possibly also use a lowest price node and adjust the min hours to be on to a high enough value so that only the most expensive hours are left, then invert the signal on the node.

This would of course not work optimally if the price is flat during a day. In best price node you can set which price you care about which could solve this

Gr1pen commented 1 year ago

Yes I could probably create a kind of inverted output. Thanks.

Still it would be nice to be able to find the most expensive hours the same way it works with cheapest hours today.

Med vänlig hälsning, Tonny Andersson

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Från: shadowano @.> Skickat: den 13 mars 2023 08:00 Till: ottopaulsen/node-red-contrib-power-saver @.> Kopia: Tonny Andersson @.>; Author @.> Ämne: Re: [ottopaulsen/node-red-contrib-power-saver] Find most expensive hours (Issue #159)

If you are already finding cheapest hours, would the non-cheapest hours be good to say that they are the most expensive hours?

This way you could treat the off signal as a start of expensive hours and on signal as stop for expensive hours. Use a function node to for instance invert the signals.

You could possibly also use a lowest price node and adjust the min hours to be on to a high enough value so that only the most expensive hours are left, then invert the signal on the node.

This would of course not work optimally if the price is flat during a day. In best price node you can set which price you care about which could solve this

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gittan443 commented 1 year ago

I agree, I want this feature also. I want to configure full discharge of my battery when price is at the highest and not below 250 öre. Since the discharge takes about 1 hour it seems contraproductive to get the 23-cheapest and reverse on/off. Besides, I'd have to add another check to get the "minimum sell price".

Also, the visualizations in HA would be nicer to have an inverted cheapest hour graph.

Ferforfaen commented 8 months ago

I would like that feature also

Codeschnipsler commented 2 months ago

I agree to the above feature request. Use case is to block a heatpump and BEV during peak hours no matter what. Finding the cheap x hours of course is great but those might not suffice to charge. I think I will use find cheap 20 inconsecutive hours and reverse the signal as a workaround but I think a dedicated node would tackle this better - tak