I just made a flow like that. Maybe it’s useful to you.
You can import it right away using the Device Capabilities app settings “Templates” section:
Flow impression:
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v4.7.0 is ready: Power by the Hour App for Homey | Homey
- Added ability to add same summarizer multiple times.
- Added maximum price and hour as capability.
- Added min/max/average price tomorrow as capability.
- Fix currency migration.
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Really looking forward for this. Then I can continuesly compare my electrical cost with, how it would be if I choose(d) flexible price - at least I assume that I can do this with this feature! 
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Am i missing something? I’m not able to update one device with high/low tarifs and the other one with DAP tarifs. What am i missing?
This will be possible once I implement #13 tariff groups
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v4.7.1 is ready for testing: Power by the Hour App for Homey | Homey
- Added tariff update groups.
This implements #13 tariff groups. So now in your flows and DAP devices you can set for which group you want to update the tariff. In the summarizer devices you can set which group it belongs to.
@Walter_vande_kerkhof @Ronni
I have done my best to make migration work automatically without breaking existing tariff updates via a DAP device or via a flow. I hope I was able to tackle all the possible use scenario’s. But when updating to this version please check if the tariff update you had setup before is still working correctly.
Works like a charm, no update-issues over here. Will test DAP later
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DAP groups works great!
Thanks!
Other question is it possible to add fix moth or daily cost as well?
Like a subscription cost that split up on every hour cost?
/Albin
That is already on the todo list as #2
Okay great!
@Torstein Thank you for your donation 
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@Albin_Hultgren @Dijker I added and am now testing the fixed costs per month/day/hour
Since the Dutch government is giving back some of the energy tax I have set that up as negative costs per hour.
v4.7.2 is ready for testing: Power by the Hour App for Homey | Homey
- Added fixed costs per hour/day/month for summarizer.
@Albin_Hultgren @Dijker can you please test?
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Sounds perfect! I’ve downloaded the current test version and added my monthly and daily cost.
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Looks good, now finding all costs that they put in to calculate next month the difference for a contact at fe ANWB / Tibber vs a monthly / fixed price.
Thanks!
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Yes it works! 
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I got the daily fixed amount added at midnight. Thanks!
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I added it to the list
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Don’t how I did it but before I was able to add several “energy summer” on same “power meter” but no I not manage to that?
Should it not be possibel?
I can make it work by use a “virtual meter” so no big problem.
/Albin
Yes, I added using the same device for multiple summarizers last week.
