OK. During my exhaustive 5-seconds of online research, I found
one place that says that 1 BTU is about 0.293071 watt-hour. That
should be enough to get me going.
(12 x 10^6 BTU / 30 days) x (day/24 hour) x (0.293071 watt-hour/BTU) =
(12 x 10^6) x (0.293071) / (30 x 24) watts = 4,884.5 watts .
===================================
As a check, I grabbed another conversion off the web, and I'll do
the whole thing again with that one. Let's see if I come anywhere
close to my first answer this time:
This one says that 12,000 BTU = 3.51685 kWh .
So ...
(12 x10^6 BTU) x (3.51685 kW-hr / 12,000BTU) x (day/24 hr) / (30 day) =
(12 x 10^6) x (3.51685) / (12,000 x 24 x 30) kW = 4.8845 kW
Couldn't ask for any nicer agreement !
That's my answer and I'm sticking to it.