Mr Q wrote: » Do you still have this installed Coltrane? There is a software update on the NIBE website dated yesterday for the VVM unit. It mentions changes to the EME unit several times including one about how the power is regulated. Might be worth updating to this if you have not already and see if you notice any improvement.
Coltrane wrote: » Well spotted! I’ll check it out, thanks. Though, I don’t see much solar-surplus these weeks...only 1.8kWh exported this month-to-date. ...not seeing this content myself in yesterday's firmware (9085R5). There were previous updates related to the EME and these are incorporated into the same update-doc, a few pages down, kinda confusingly...I’ve long since installed those and they don’t fix the issue... ...you had me excited there for a moment - Friday nights aren't what they used to be... ...or the update that you're seeing may not be available to my kit (VVM320, 2040 12kW) ...my system shows the current from the PV alright, just doesn't use any of it!
easypazz wrote: » In terms of longevity how good are these systems?
easypazz wrote: » Will the battery hold charge as good in year 5 as year 1?
easypazz wrote: » Will the panels generate as much power in year 5 as year 1?
easypazz wrote: » Also I assume a 5kW of panels will charge a 5kWH battery in 1 hour, assuming full load and no losses.
handpref wrote: » I lost all my historic data. However I know that my lowest days generation was 5kwh in the depths of darkest winter.
unkel wrote: » The expectations are that it will be around wholesale pricing, or about 5c-6c/kWh
unkel wrote: » That just can't be right. I'd say with a 5kwp system your worst day of the year will probably be just a few hundred Wh, if even that. Never mind 5kWh. More likely your system was actually fixed and is showing correct data now
handpref wrote: » Thanks Unkel- yes my system was controlled by Prime in the UK and they were terrible- maybe that’s just how it is for now..hopefully things will recover next April or May. With my lowest generation of 5kwh I was happy knowing it covered the cost of running one of my air to air heat pumps for 24hrs- that was probably an illusion, still 10kw’s of consumption to keep the house at 21deg permanently isn’t too bad. On a side note even with the colder weather our no longer new Z.E. 40 zoe has bottomed out at 260km per charge, my wife just didn’t warn to the Ioniq despite its efficiency - down from 300km in summer- that’s on a Louth to Dublin city Centre commute. I have to say I’ve become quite fond of her, not the pulling power or solidity of the i3 but a nice place to be. With the 22kw charger and the price/spec we got its worked out well- hard to believe Renault give a 5 year warranty and bmw only 3 ...👍🏻
handpref wrote: » Z.E. 40 zoe has bottomed out at 260km per charge, my wife just didn’t warn to the Ioniq despite its efficiency - down from 300km in summer
Stefs_42 wrote: » 10kw to run whole house? is it including water heating? would you be able to pm me details of your air to air system and who installed it, please?
unkel wrote: » That's very decent! Renault themselves advertise the Zoe 40kWh as having 300km range in summer and 200km in winter.
garo wrote: » handpref, your generation numbers are in line with mine. I have 4.8 kW EW system in Dublin and November has been dismal. I’ve only had 60kWh for the month so far. Some days like last Thursday and Saturday have seen <0.5kWh generated.
rob w wrote: » Any inducations when this might be coming in? I presume that will do away with the current grants? Prob best to get my system installed before then!! On a seperate note, not related to the above. I spoke to an installer recently regarding a quote. I wanted to keep system under the 12 sq m planning requirements. He told me, sure nobody complies with that anyway and you can just apply for retention if it becomes an issue! Is this the norm for people installing larger than 2kW systems? I know there was a recent case in Limerick (I think) where this happened and the homeowner won, but are people generally ignoring this requirement? I don't wanna get caught out here!
garo wrote: » handpref, your generation numbers are in line with mine. I have 4.8 kW EW system in Dublin and November has been dismal. I’ve only had 60kWh for the month so far. Some days like last Thursday and Saturday have seen <0.5kWh generated. I thought something was going wrong as the projected production for November is 110kWh. But I think this has just been a bad month.
niallers1 wrote: » 67 kwh generated in November so far with 4.2kw east West in the mid West. November has been dreary. December will be the darkest month. Once you get to December 22nd you'll be smiling again
handpref wrote: » Hi all- I have a feeling that I’m being fobbed off by my provider. My system was recently ‘updated’ but I lost all my historic data. However I know that my lowest days generation was 5kwh in the depths of darkest winter. In the past week my system has not generated more than 5kwh per day and yesterday and today only generated 0.60 of a kWh. I was advised by ‘technical support’ that this was in line with what my system did last year but they did not give me a figure. They suggest that I check for shadow and clean the panels. There is no shadow effect and like a fool I got up on a wet roof today to clean all bastard 18 panels- driven to prove the point that dirty panels are not my problem. I have a 5.4kwh system with 18 panels - east west roof. 5kwh of battery storage which I’ve stopped charging at night. What type of generation did people get yesterday-today and with what size array? I know locations will differ but a rough average figure would help 👍🏻
garo wrote: » My expected figures are based on the PVsys model that looks at the tilt and orientation of my panels, historical records of cloud cover and the path of the sun to calculate expected output. This was provided by my installer. Here is an interesting page that has a spreadsheet modelling this stuff. Unfortunately they do it for the US only. But it gives you an idea of how latitude and seasonality affect output.
