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RE: How to reduce the electricity costs for digital billboard in 10 times or even more?
I am not a electrical person so all I can do is dream and wounder... But it would seam to me, these build boards are high up, so why not attache some wind turbines to them? This in partnership with a solar panel or 2 and the lowering voltage cost for LED could push them into a more affordable state. Or, at least I think.. :D