Jump to content

Shouldn't the solar array (20 x 360w) cover these loads


Recommended Posts

Posted
  • Client has 20 x 360w (7200w) panels on the roof (roof, facing north). 5 strings of 4
  • 2 x MPII in parallel
  • SmartSolar MPPT 250|100.
  • ESS system not feeding in to grid. Set to about 70% state of charge for self consumption.

 

Why isn't the PV covering all the day loads?

 

A looks normal in this image, but the B section. The client is using high consumer (iron) during this time. Shouldn't the array handle this consumption?

 

B in image 2.

red square in image 1

xxx.png

generation.png

  • 3 weeks later...
Posted

First of all I'm afraid your 1st graph confuses kW with kWh. Remember kWh is energy (consumption), kW is power. I think your graph shows power in kW.

What you should do is meter the daily consumption of your household. I made a statistic by reading and recording my meter monthly over years before installing solar. It boils down to an average daily consumption of about 10kWh. I found in internet a graph that shows for about 34°S that 9 330W panels yield in winter (June) just 10kWh per day. Important is the battery capacity. I installed 9.6kWh and found that now at a sunny day in August they will overcharge. So I'm planning to add 4.8kWh. This way it will cover a cloudy day and eventual consumption surge.

  • 1 year later...
  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...