Solar Array Oversizing - All the Benefits and Considerations
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Published 2024-01-12
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Gary Does Solar's Patreon:
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Chapters:
0:00 Intro
1:47 The benefits of oversizing
4:42 Higher inverter efficiency
5:32 East and West Arrays
6:12 DC coupled batteries
7:15 Quick and easy install
8:40 Less export opportunity
9:29 Lower power output
10:25 How much can you oversize?
11:14 Summary
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DISCLAIMER
Whilst every effort is made to ensure the accuracy of the content in this video, no warranty for that content is provided, nor should it be implied. Viewers acting on the content, do so at their own risk.
#solar #array #oversizing
All Comments (21)
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Shocking value given for free. so well explained. Gary deserves 20X more subscribers.
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Why is this the first time I hear about the interesting DC and AC battery setup, and of the oversizing of panels? Sounds kinda smart to be honest.
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We recently installed 31kWp of panels for a house which only had a single phase supply and therefore a limit of 17kW could be connected to the grid, but we were able to use 17kW of SolarEdge inverters and oversize, works really well!
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WOW I cant beliive this video has come out today, my system has come online today and my installer recommend a 6KW inverter for my 8.1 kw total panels and 10.5 kW battery system and this video has proved him right.
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great easy video! another positive thing with oversize array is reaching faster the minimum input voltage of the invertor so that helps getting more solarhours usefull
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Thank you so much Gary. I have only just discovered your channel with this video. I installed a 5kw array with 5kw inverter a few years ago. My needs have changed dramatically since then. I now have an EV and battery and combined with a pool pump and upcoming heat pump install my system can no longer cope. I’ve been trying to find an inexpensive fix and your video has been a God send. I did not know this was a thing. Oversizing!!!! Wow. I’m a man on a mission now. Many thanks again. I’m now an avid fan and subscriber. So many more of your videos need watching.
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I’m planning my own system, and currently working on sizing based on the system input, and panel configuration. I had come to the same conclusion to over-provision on the PV side, and this video further confirms this industry standard practice. I’ve been playing around with a single 100W and 400W panel as a proof of concept, and I’ve personally seen examples of everything you’ve described. Thanks!
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Thanks Gary, I must admit I thought i knew what you were going to say and I got some of it right, but you made many more points than I expected.. Excellent video content and delivery.
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Well done! The only thing I think you missed was that oversizing the array also changes the shape of the curve (same orientation) by allowing more production earlier and later in the day, as well as in cloudy conditions. Basically it will produce more earlier and later, adding to total output or area under the curve...
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This is a great video. You explain things so well, and the graphics are excellent. Thank you so much.
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Nice one Gary, your videos keep just getting better. And now great T-shirts too!
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THANKS FOR THE WONDERFUL AND SIMPLIFIED EXPRESSION. SO INFORMATIVE AND EDUCATIVE FOR A NON ENGINEER LIKE ME.
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Good to see someone 'focus' in on the issues
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What you described is probably the solution with the highest possible available financial ROI at the moment. We need to supply power in the morning and evening (see duck curve). We do this by placing panels east-west, not toward the equator. It matters little if your setup harvests relatively less power around noon, because power will often be cheap if not free or negatively priced at that moment anyway. Oversizing works especially well if panels are cheap and inverters are expensive, which seems to be the case. I heard from a source that I consider reliable that panels HALVED in price over the last year. Prices of inverters seem to have changed very little over the same time period. NB: It’s important to look at your actual expected peak power. 25 panels of 400 Wp each placed east-west probably won’t ever actually produce 10 kW, especially if you’re farther from the equator. If you have a DC-coupled battery you can get even more power out of your inverter.
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Another super interesting informative video Gary. I oversized my array, 9.6kW on a 7kW inverter and 9.4kW battery split across two roofs. So makes alot of sense to maximise generation from the roof space we have without a bigger inverter
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Learned some new things about solar energy. Thanks!
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First time I see one of your videos. Congratulations for such a clear and great video. I subscribed right away!
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Thank you Gary , your videos have helped me out so much.
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This is a GREAT information! Thanks for posting. 😃
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Hi Gary, OK I understand. Thanks for your reply. Regards Mark
