I was under the impression that mercury vapor lights are pretty
efficient- as good as any other type of fluorescent light. But those
things (sometimes called "yardblasters") tend to send too much light
all over the place, including upwards. You might be better off with
some type of lighting fixture that has less total brightness, but has
a better type of reflector that sends the night to where it is
actually useful (e.g. not the neighbor's bedroom windows).
Doug
On Tue, Nov 15, 2011 at 10:43 AM, <eric at megageek.com> wrote:
>
> Is there a better (more efficient) option for lighting a fairly large area
> at night? Maybe one that comes on only with motion? Or is a MV light
> pretty cheap to run and I should just go with that?
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