Has anyone worked out how to record how much each string is generating per day?
My west facing panels are shaded somewhat this time of year so I know most of my generation is coming from my south facing string, but I'd love to record the differences to give an indication how each string is performing historically.
LordHippos Sounds like you want the "PV data" tab in "My Inverter"
naltsta It's not summed though anywhere, and even if it is summed, it won't be accurate necessarily? I guess it's at best a guess of time spent at a certain watt value?
Seems like it's something that is sort of missing from the general chart selection you can get.
LordHippos Not really. The data is there for you to use as you wish. All you need to do is downlod it into a spreadhseet and you can slice and dice it as much as you wish. Sum it, Average it, Graph it and all in the specific way you individually want it. Furthermore, you could use something like givTCP to monitor everything and store readings in a database every 5-10 seconds. Then use a graphing tool such as Grafana to bring it to life in the perfect way for you.
cluelesscris I have Home Assistant as well which does record some data for it, but again it's just like W usage at a point in time, more frequently than the 5m data you get in PV data tab of GE site but needs calculating somehow.
With this, you can create helpers to gather the cumulative daily and totals.
Integral from W will give total Energy
Utility meter (Daily) from integral, gives Energy today
TheDragon (GivEnergy) Per string?
LordHippos Try the HA history for the string entity. You can choose any time slice since the entity was receiving data. Doesn't sum for you but you will be able to add both strings to your chart and see how they differ.
Tim You could also use the Home Assistant grafana add-on to do all this for you. It's immensely powerful for analysing and graphing data and even has it's own dashboard functions. For this stuff it's your Christmas wish....
Of course, you can create your own entities from any source you have access to in HA.
String1 W, integrate it and becomes String 1 Energy totals, cumulative. Pass this total, to the utility meter and create a 3rd entity, String1EnergyToday
All easy to do, if your hybris is sending PV1 and PV2 powers separately. If Not, is it pushing PV1/2 V and A?
TheDragon (GivEnergy)
Hi there, I'm also keen to compare performance per string (with installer's estimates in particular) - e.g. monthly generation totals per string. Might this feature be enabled in a future update to the GivEnergy cloud portal, or am I best to explore HA?
Thanks.