[Greenbuilding] cost of electric versus natural gas and gasoline

[Mike O'Brien]

Hi, Ben--

A therm of natural gas is equal to 100,000 Btu.

A kiloWatt hour is equal to 3413 Btu. So it will take 100,00 / 3413  
or 29.3 kWh to equal one therm of gas.

At your rate, that's 29.3 x .086 or $2.52.

I reckon all energy is going to go through the roof within your  
lifetime. Best to cut down your need as much as possible.

Mike O'Brien




On Mar 7, 2008, at 2:48 PM, Benjamin Pratt wrote:

> I'm paying about .086 per kWh for electric and 1.02 per therm for
> natural gas (in US dollars). Would anyone be willing to do the math
> and tell me which is the less costly energy source?
> I'd be curious as to the cost of electric versus gasoline (at 3.20 a
> gallon) for the purposes of powering a car. I know in California,
> people are hacking their Hybrids to make them plug-in, but i have no
> idea if that would make sense here.
>    Also, anyone have any views on which energy source will increase in
> cost more quickly in the future? I'm in Saint Paul, MN
> -Ben
>
> -- 
> Ben Pratt
> Professor, Design
>
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