Daily pv production

3.1kW for me at the moment in South Dublin , highest ever recorded. (System installed over Christmas :))

Battery full and free energy going back to ESB since no smart meter for 3 phase yet :(

First day over 20kwh on new 7.92kwp system installed november. Would have been higher but had some clouds around 1pm. Happy with that for the ground tubs in January.

just 12.4 kWh today but still producing 200 watts or so in Arklow

9kwh yesterday having had rain up until about 2pm then blue sky

System high 22.6kwh today on 7.92kwp ground tubs south facing.

System high of 5.9kWh after Nov install, its an east west split 4.4kwp system so pretty happy with that

Two record setting days in a row. 14.1kwh and 15.4kwh today. 4.4kwp sse

Some of the numbers being posted yesterday/today are amazing. I've 8.8Kwp in total across my main roof and the shed and together they "only" managed a meager 14.4Kwhr today. (The main roofs 6.5Kwp is a E/W split so I expect it to be low this time of year)

Still nice to see 3.5kw coming in this time of year from the relatively low sun on the horizon, and no, I didn't jump to 6Kw above. It's a random spike I see in the telemetry in HA. I really should write a filter function, but lazy… :-)

Yesterday ,6th, was as good as it gets this time of year and my 9kWp E/W system delivered 15kWh. A similar day in June would generate 61kWh - of which there were plenty in 2023- not so much last year.

Over half that consumption was for an EV.

Been a pretty grim couple of days. Ain't looking good for today/tomorrow either in Dublin.

Note: Since the met eireann forecast only shows detailed info for 72 hrs, my "3 days time" above only includes generation up to 10am thursday morning, nothing for the rest of the day - so it's not a good forecast until sundown today.

It's custom - wrote it myself. No HA isn't involved here. Met Eireann have a REST API that you can query, specifying a lat/long location such as…..

http://openaccess.pf.api.met.ie/metno-wdb2ts/locationforecast?lat=53.27;long=-6.32

which is for some random location in south Dublin (not where I live btw) That returns back an XML of the forecast which has hourly blocks like…..

<time datatype="forecast" from="2025-02-10T21:00:00Z" to="2025-02-10T21:00:00Z"><location altitude="68" latitude="53.2700" longitude="-6.3200"><temperature id="TTT" unit="celsius" value="4.7"/><windDirection id="dd" deg="80.5" name="E"/><windSpeed id="ff" mps="5.3" beaufort="3" name="Gentle breeze"/><windGust id="ff_gust" mps="9.9"/><globalRadiation value="0.0" unit="W/m^2"/><humidity value="85.1" unit="percent"/><pressure id="pr" unit="hPa" value="1027.3"/><cloudiness id="NN" percent="100.0"/><lowClouds id="LOW" percent="100.0"/><mediumClouds id="MEDIUM" percent="67.9"/><highClouds id="HIGH" percent="0.0"/><dewpointTemperature id="TD" unit="celsius" value="2.3"/></location></time>

So you can add up all the non-zero values for a day and that will give you the "total solar radiation value" for that day. Let's say it's 2000 for the day. If I know from my 10 day moving average that 1000 "solar radiation points" gives me 3kwh, then if I get 2000 forecasted I know that my yield tomorrow will be 6Kwh.

As you can see, it works out reasonably well. Correlation is decent. Sure, the odd day it's off e.g. mid Jan about the 20th but that's the weather forecast for you, not the code/algorithm. Looks like the forecast for Weds has improved a little since this morning.

poor production in Arklow this past few days

Yesterday and today the worst around 4kwh

Other days back to the 9th a bit better at 5 to 11kwh

168kwh produced in Feb so far on a 15kwh ground mounted south facing array

Yeah, same here in South Dublin city. Feb started out pretty decent, but last week has been grim.

Sadly Saturday, Sunday and Monday coming aren't looking great either.

Decent day in Cork today, 10.75kwh from my 5.95kwp. Much better than forecast anyway.

yeah you had Sun yesterday

Dreary as hell here today in the East again

My Panels are currently producing 640 watts or about one 26th of max capacity

just 6.2 yesterday

11.2 so far today

15kw system Arklow