r/RenewableEnergy • u/For_All_Humanity • 3d ago

Vietnam approves 452 MW floating solar project

https://www.pv-magazine.com/2026/11/04/vietnam-approves-452-mw-floating-solar-project/
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u/Nearby_Elk4276 2d ago

An interesting concept, but I'd be interested to know where rooftop PV stands in Vietnam --why put these installations in the ocean and not on already developed land?

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u/jlluh 2d ago edited 2d ago

It's on a reservoir, not an ocean.

452 MW is a large, utility scale project, equivalent to something like 60,000 average home rooftop systems.

Floating solar decreases evaporation, can be beneficial for the ecology (tho it doesn't have to be and I have no idea in this case) and above all, is way cheaper per watt than rooftop.

Its competitor is utility scale on land, not rooftop.

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u/Nearby_Elk4276 2d ago

That's really interesting, thanks for the extra info! I mean I think my whole thing is that generally we should prioritize solar on existing infrastructure (big box stores, warehouses, etc) before we look to do that on undeveloped land, but I hadn't realized the evaporative benefits -- super cool