Recent content by Ecoeco

Thanks. Just to clarify 12.5 cents NZD (7.625 cents USD) cents my sell back rate. The amount I pay for power ranges from 16.1c/kWh to 32.3/kWh depending on the time of day. So that’s between around 9.6c to 19.29c in USD. I’ve looked into cells from China but the price of shipping makes it...

That is correct - summer down here is Dec to Feb, autumn is Mar to May, winter is June to Aug, and spring Sep to Nov. Our annual production looks like this: I realise this … now. This thread has been super helpful. Yes, my goals are to use as much of the power as possible so that the system...

I’m not too worried about this in my circumstances. A power cut of more than a a few days Is highly unlikely except in the circumstances of a natural disaster (earthquakes are common here). If there was a disaster we can scale back our usage. I also have a seperate cabin on the property which is...

Thanks - this got me thinking about how I’m sizing the system. Here’s my plan for critical review: a) In winter we use an average of 40-45 kWh per day from the grid. In summer our average is around 24kWh. I’m looking to have around 50% of our daily needs supplied by the new system. I’ll then...

Whoops!

Thanks - it’s a monopitch steel roof. The roof is flat but angled away from the sun (to allow for big windows at the front of the house and little windows at the back). Fortunately we are connected to the grid. I’m self installing the system as DIY. By doing it myself rather than through an...

Thanks, those are good observations. I‘ll do some more thinking about airflow, although I’m still tempted to start with a smaller somewhat over panelled system and consider adjusting the tilt and/or number of panels if the production ends up too low. My roof is 10 years old and will hopefully...

thanks - that was super helpful. I used this calculator: https://pvwatts.nrel.gov/index.php this shows a less that 20% difference in output between a 20% pitch and 0% pitch. I’m going to just buy more panels.

Hi I have a newbie question. I’m putting panels on the roof of my house. The panels will face due north (I’m in New Zealand) however my (flat) roof pitches slightly down to the south. All the solar installers I’ve spoken to are keen to mount the panels with tilt legs so that the pitch of the...

Continuing this thread in case anyone else has this issue. I notice very strange readings from my Growatt 3000TL all in one. The Growatt will show 95 watts being drawn from the battery, while my Victron smart shunt installed between the Growatt and the battery shows readings of 45w. I don’t know...

Fantastic - thanks, that‘s exactly what I’m looking to achieve. We have the same shutdown requirements (within 2 seconds of failure or less than a specific voltage coming in from the grid). Our enphase system already does this and we can get a 6kw hybrid inverter which will do the same thing...

Hi Long time reader, first time poster here. I’m wondering if anyone can help me with planning my set up. We have a small 2kw enphase M215 microinverter system that works well and delivers power to our main board and feeds surpluses to the grid. We have had the system for about six years. Our...