What is natural gas
and where does it fit in as an energy resource?
Natural gas (NG) refers mainly to
methane (the simplest hydrocarbon), but can also include other gases born from
the earth including ethane, propane, and butane. NG is just one of many sources of energy,
others being coal, oil, nuclear, as well as “green” sources such as wind,
solar, hydroelectric, and geothermal.
Keep in mind that much of these raw resources are simply means of
generating electricity, which is why electricity itself isn’t considered an energy
source.
What is fracking and
what’s all the hype about?
Fracking is a nickname given to
hydraulic fracturing, a process recently developed and now being used to
liberate NG from underground shale deposits.
The process entails drilling a mile or more beneath the earth’s surface
where sand and “proprietary” fluids are injected at high pressures to fracture
and crack, or frack, the surrounding
shale, allowing NG to then escape back up the drill pipe. Since about 2005, with the use of fracking
technologies, companies have been able to tap previously inaccessible NG
supplies, thus dramatically increasing supply.
Largely due to this increase, domestic NG prices have dropped lower than
at any time in recent history, making NG a hot item in the world of energy and politics.
Why isn’t fracking
fluid regulated?
Perhaps the most overt and shameless
example of political pull relating to U.S. environmental policy is the
so-called Halliburton Loophole, a provision passed in 2005 that exempts
fracking fluid from regulation under the Safe Drinking Water Act. This odd
provision was passed under then Vice President Dick Cheney, who also happens to be the former CEO of Halliburton, one of the largest providers of hydraulic
fracturing services to gas companies. A
coincidence? I’ll let you decide.
Natural
Gas and Fracking
Pros
- Burning NG produces considerably less carbon dioxide per unit energy than either coal or oil (about half the emissions compared to coal). This means less of an impact on climate change compared to dirtier sources.
- Increasing NG supplies means lower prices for the consumer.
- Developing domestic energy supplies means greater energy security and perhaps more stable energy prices.
Cons
- As the word “proprietary” suggests, the chemical ingredients used in fracking fluid are kept hidden from both the government and general public. If fracking was a closed process, perhaps this wouldn't matter. Instead, fracking fluid often leaks into the surrounding groundwater, affecting community drinking water as well as the ecosystem. You can actually find videos on youtube.com in which people from fracking-afflicted towns set fire to their faucet water to demonstrate its contamination.
- Fugitive emissions, or unintended releases, of methane gas could offset the benefit of reduced carbon dioxide emissions, thereby exacerbating global warming (methane is a far more potent greenhouse gas than carbon dioxide).
- Compared to greener energy sources, methane is still a hydrocarbon and thus its combustion directly translates to the release of greenhouse gases.
- The use of NG means higher exports of dirty coal to other nations, effectively solving our local pollution problems by shipping them overseas; though from a global pollution perspective (i.e. pollutants that spread across the globe), we aren’t solving anything.
- Low NG prices, while out-competing coal prices, are also competing with more sustainable technologies, meaning solar, wind, and other green technologies will be even slower to develop.
Closing Thoughts
Hell, since I’ve written this much I
might as well close with my personal thoughts about natural gas and the future
of energy. In my opinion, expanding the
NG industry is akin to having expanded the oil industry in the past. We’re once again focusing an entire industry
and global economy on a resource that will ultimately become exhausted. And when it does, we’ll be forced yet again
into a panic, the product of which will be green
renewable energy technologies. In the
meantime, however, the effects of climate change will have worsened and
afflicted generations more of people.
This cost to humans and the environment is not justified by the short
term profits realized by the select nations/companies that stand to benefit form
NG expansion. Finally, relating to the
economy, the infrastructure required to fully develop NG resources (including
expensive import/export/NG compressions facilities) will require billions upon
billions of dollars worth of investments, reshaping domestic economies in certain instances. Who is thinking about the
fate of these economies when NG supplies run out? Not the NG companies I can assure you. As a society, we're better off bypassing the ramifications that will inevitably ensue with NG expansion and instead focus our efforts on long term energy solutions, that is, renewable energy.
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-Shahir Masri , MS
