LPG versus Natural Gas prices

[willowman]

I use LPG and could possibly revert to Natural Gas.
However doing a price comparison is proving a nightmare.
I buy bulk LPG in litres and so have a price per litre.
I have a price for Natural gas in Pence per KiloWatt hours.
Does anyone know how to work out a comparable pricing unit?

I have discovered that 1.1 gallons of LPG is approx 1 therm, if that helps!!

[HowardKennitby]

1 therm is approx 100MJ

[HowardKennitby]

actually 105.5MJ

[DTCwordfan]

1 therm of natural gas = 29.3 kWh or 1 kWh = 0.03413 therms

1 therm of Propane = 4.16 litre or 1 litre = 0.141 litres. (not fully accurate as LPG is a C3/C4 blend)

I Imperial gallon = 4.546 litres.

Be careful of pricing as LPG tends to be at a premium in winter, re heating and at a discount in summer, the surplus of which in refining heads across the refinery wall into Chemical manufacture, esp for ethylene based products.

And also there are big differences re bottle and tank for Propane - and there can be (significant) charges for NG connection - used to be the first 50m to the pipe was free but am not sure today - probably somevariation between suppliers as, in my time, BG were horrendous with their charges

[DTCwordfan]

sorry 1 litre = 0.242 therms.....cracking up - need a wine!

[willowman]

Thanks people.
However after a large indian meal and a couple of Banglas my brain is not fully functional, so I'll look at all the figures tomorrow and try to work it out.

[DTCwordfan]

Its not that hard but calculate winter and summer price deltas not just winter, esp if your cooking and hot water is involved