by Graeme » Mon 22 Dec 2014, 16:34:45
How Much Renewable Natural Gas Can Be Produced?
$this->bbcode_second_pass_quote('', 'R')enewable natural gas (RNG) is methane produced from biomass that is cleaned to pipeline quality standards and blended with fossil natural gas. RNG, also known as biomethane, is carbon-neutral and chemically identical to fossil natural gas allowing it to be blended without restriction. Renewable natural gas is produced from a variety of (mostly waste) resources including landfills, sewage, farm waste and food waste. Biomass energy crops could be cultivated for RNG production, but currently those resources tend to be used for liquid fuels.
The major benefits of RNG production are that it takes methane already naturally produced from waste and prevents it from going into the atmosphere as a potent greenhouse gas, instead turning it into a valuable carbon-neutral fuel. RNG also helps address energy security because it is a locally-produced fuel available in every community. RNG is also a universal fuel certified for use in existing infrastructure without technical issues and it can be used for heat, power and transportation.
A series of studies from government research agencies and industry in the last few years have found that anywhere from 5% to 20% of today’s natural gas demand could be met with RNG. These studies have attempted to quantify the resource by sector and region that are available for RNG production. The studies covered in this article do not include power to gas, nor synthetic natural gas which is produced from other fossil fuels such as coal.

$this->bbcode_second_pass_quote('', 'C')onclusions
Though estimates vary for how much renewable natural gas can be produced, depending on how aggressively analysts calculate the resource base, and whether energy crops are included, there is a broad consensus that RNG can make a substantive and valuable contribution to global renewable energy production.
RNG offers multiple benefits. First, methane emissions from natural sources that would otherwise be going into the atmosphere as a potent greenhouse gas are converted into a valuable asset.
Second, RNG is a universal fuel that can be used for heat, power and transportation, meaning that it can be directed into sectors in greatest need of greenhouse gas emission reduction.