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Photovoltaic & Storage, Late 2021 - Part 1

image credit: NREL.gov
John Benson's picture
Senior Consultant Microgrid Labs

PROFESSIONAL EXPERIENCE: Microgrid Labs, Inc. Advisor: 2014 to Present Developed product plans, conceptual and preliminary designs for projects, performed industry surveys and developed...

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  • Dec 14, 2021
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The last post on this subject was in September, just two short months from when I’m starting to work on this post. In that post I opined: Solar Energy’s amazing development and rapidly exploding deployments can only lead me to believe that it will accept a lion’s share of renewable energy’s displacement of greenhouse gas (GHG) emitting electric energy sources. No different opinion at this point.

This first post will be on non-project related developments, for Photovoltaic and Battery Energy Storage Systems (BESS). The second post, two days after this one, will be for all recent or upcoming projects in the U.S. of at least 150 MW.

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Thank John for the Post!
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Jim Stack's picture
Jim Stack on Dec 15, 2021

   Thank you for A very good report on Solar PV and Batteries ,BESS. The price on solar modules has really fallen and the batteries are getting longer lasting along with falling prices. O the advances I did not see SunPower mentioned. They make the most efficient and coolest running panels in the world. They moved the cell inter connections to the back of the panels allowing more surface area to the Sun and much cooler connections. They produce the most power and have the longest and highest output warranty of any panels. They also have the C7 concentrated Solar that lasts a long time because of that cooler panel design.  

   As to tracking I have seen a lot of failures from tracking failures. I have even seen large utility systems all tracking facing the wrong way. You mentioned shading and that should never be on any Solar array. I have also seen Solar panels facing north here in Arizona just to get the installed amount for an incentive. A very poor idea. 

John Benson's picture
John Benson on Dec 16, 2021

Thanks for the comments and information, Jim. 

Shading is seen on building-integrated PV, where panels are not just on roofs, but also on some walls. These are mainly on commercial buildings. Also, these would be used on buildings with unusual roof-shapes. For a good example see Dragon scale panels on buildings in the Google Campus in Silicon Valley - go through the link below.

https://pv-magazine-usa.com/2021/10/26/watch-dragon-scale-solar-tiles-in...

-John

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