I agree, but my application is primary power, not emergency. From: Eric Kuhnke Sent: Friday, December 02, 2016 6:53 PM To: [email protected] Subject: Re: [AFMUG] generator fuel
I don't think it's fair to directly compare diesel fuel to natural gas, because one is portable in just about any container (in a real emergency), the other is not. http://www.datacenterknowledge.com/archives/2012/10/31/peer-1-mobilizes-diesel-bucket-brigade-at-75-broad/ On Fri, Dec 2, 2016 at 5:49 PM, Chuck McCown <[email protected]> wrote: I am assuming a BTU of fuel will make so many Wh of energy. If perfectly efficient 1M BTU =292.3 kWh That would cost me $35 from the power utility. A gallon of diesel is abou $3.25 around here. 139000 btu. Diesel then is about $23 per 1M btu. However diesel engines are only 30% efficient so it will cost me $76 in fuel to make that 292.3 kWh If that assumption is approximately correct: I pay about $7.80 per decatherm in the winter for NG. A decatherm is 1 million btu About half that in summer. $7.80/.3= $26/293.3 kWh for NG not considering depreciation and maint of the generator. It seems to me that NG is the hands down fuel cost winner? Anyone see mistakes in this?
