Daily pv production

Do you have visibility of how much electricity your Heat pump used over the last 12 months (or more)?

Do you the the option to charge the battery from the grid in the settings?

That’s an average of 24kwh units per night; that’s huge. Dishwasher and Washing machine maybe accounting for 3-5 kWh of that depending if your doing more than one cycle. So the other 19-20 kWh per night is heat pump?

Id try to get a handle on how much power the heat pump is consuming before making any decisions about solar / battery. Any menu on the heating controls that can export energy usage?

If that’s true; you’d wanna be careful moving to a smart meter as you will get a much shorter night time rate window. And you clearly have a lot of usage at night (over and beyond the stuff you’re gonna switch to daytime).

Sorry I should clarify a bit. I use my heat pump to heat at night rate only and allow the heat dissipate throughout the day.

yes you use more units heating the mass to a temp to of 1-2 degrees more than if it were controlled completely by stats and using some day rate but you pay out less overall. This may change when the heating controlled allow integration with the solar

therefore when I say 27kw is ok I mean for your total heatpump usage for a day. When I reread I could see my brain got a head of my thumbs.

perhaps your saying 27kw is excessive if you have more heat pump units used up through the day also. I was referrring to total usage but at night.

I still think an average of 27kwh per night (which is actually covering the full day) is still a lot (because I need less; and my houses insulation is a joke). The best efficiency with heat pumps is achieved when they are run “low and slow”; your doing the exact opposite :)

considering this is an average; I’m assuming winter days are much higher; and summer days could be almost 0?

We are getting off topic here (that’s not unusual) I’d love to know what your BER and M2 and do you have rads or underfloor; are all your rooms zoned?

im very interested as I know I’ll want a heat pump once I get my insulation sorted. It’s just I also know my current solar / battery setup isn’t gonna be able to keep up if I do.

No the 27kwh would be November to March only. Very limited space heating outside of this.

while your correct in the low and slow statement a well heated slab keeps temp for us at 22 degrees in living area 20 in the kids bedrooms and 18 in our own with night units only. I’ve tried it both ways over a number of years and yes low and slow uses less kwh over a winter but costs more with a day/night meter because of the differential in unit cost.

load shifting and the solar will probably reduce usage further as it’ll allow me give a one hour boost mid afternoon next winter so that’ll be my next experiment.

41.7kWh for me yesterday, the first day of the year to break 40.

4kW East and 4kW West.

Also broke the 2000kWh for the year so far.

I’ve been getting about 30kWh per day the last few days, it’s a bit disappointing for a 8.1 Kwp system but because of a hill (and some trees) behind the house I miss a bit in the morning. Still waiting to break 40kwh in a day

it's a east west system 50%, 50%

Same

Yesterday was a washout. Forecast to hit over 50 two days in a row in tullamore this week: