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In a fantasy world unrestricted by physics and market and costs and raw materials, - yes, they could.

Wabash is already pivoting to special composites to lighten trailers for EV Tractors. I'm sure as new technology makes itself available they will start to think about solarizing their trailers. Right now they run their refers off of propane, switching to battery/electric would be a welcomed change. A trailer can spends days to weeks and even a month in a yard waiting for a tractor and could possibly charge a very large battery in that time. As a side note they could also add regenerative braking to the trailer axles.

> A trailer can spends days to weeks and even a month in a yard waiting for a tractor

Imagine what a similar investment in a stationary solar panel in that same yard would yield, a panel that will charge 100% of time.

>Imagine what a similar investment in a stationary solar panel in that same yard would yield, a panel that will charge 100% of time.

That will have to be rolled out by the yards not the manufacturers of trailers. Trailers are leased as very few companies buy them.

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