Workshop lighting / energy costs

been green for the last 10 years ! Burning waste rape seed oil in old peugeot 306 diesels ! well it's renewable ! Noel.

Thanks for the sanity check Andrew, and also to Journeyman John earlier. I honestly thought I might have lost the plot what with those pesky decimal points and powers of ten.

Apologies if I muddied the waters by talking in MWh - that was because I was thinking ballpark figures out loud and it seemed an economical way of expressing the quantities to two significant figures.

It's tough thinking about mega and micro things from a human perspective. What is a Megawatt? My point of reference is a one bar electric fire - that's a kilowatt which I can see and feel. But multiply it by a thousand and I have to rely on arithmetic and imagination.

The last time I heard (maybe a week ago) wholesale gas for delivery in November was trading at 220p per therm. That's about 7.5p per kWh but even after the hike my supplier is asking me for only 6p /kWh. So when the price cap is adjusted next spring I'm expecting a hit.

Robin.

Edited By Robin Graham on 15/10/2021 02:10:57

Edited By Robin Graham on 15/10/2021 02:11:53

Robin,

Milligrams to kilograms is a factor of a million. Electronics often operate at milliWatts or even microWatts. Factors in powers of ten are far easier than those b——- therms you mentioned.

Even BTUs to therms requires applying a factor of 10^5! The only ‘odd’ conversion factor in metric is the 4.18 for heating grams of water with Joules wile measuring the temperature change in K.🙂