It depends on how many hours per year you plan on using the shop,,
I use my lights a couple hours per day,, max,, on average,
The main portion of my shop is about 40X26,, and I light it with two high bay metal halide light fixtures.
Those fixtures are always on CL or eBay for just a few dollars.
Mine are almost 20 years old, and light as well today as when I put them up.
If you are gonna use the shop 8+ hours per day,, I guess you are stuck buying a bunch of new LED fixtures,,
BUT,, I am super happy with metal halide,, I could never save enough electricity to justify any other type light.
My son-in-law just put in his used metal halide fixtures,,
he is CRAZY about saving electricity,, but, these were his best option.
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