America’s shale gas revolution is already paying off big time. Not only has it been a boon to consumers and companies who use natural gas for heating their homes and offices, it also appears to be benefiting the environment. Let’s take a closer look.
EIA reports lower CO2 emissions
Last week, the U.S. Energy Information Administration (EIA) reported that U.S. energy-related carbon dioxide emissions for 2012 fell to 5.3 billion tons – the lowest level in nearly two decades. What’s more is that since 2007, emissions have declined consecutively each year, with the exception of 2010. The reason?
The EIA attributed the decline in CO2 emissions primarily to the shift away from coal, the most carbon-intensive fossil fuel, and toward natural gas, the least carbon-intensive fuel, for electric power generation. Less demand for transportation fuels and relatively weak demand for winter heating also played a role in driving emissions lower.
Over the past few years, the transition toward natural-gas-fired plants and the retirement of older, coal-powered plants has been an unmistakable trend among utility companies.
For the better part of the past couple of decades, coal traded at a substantial discount to natural gas on an energy equivalent basis. In fact, it held up as the least expensive thermal fuel in the U.S. over that time period.
But all that changed in 2011, as natural gas prices slipped below $3 per Mcf that November. The downward trend in prices continued until spring of 2012, when gas hit a decade low of around $1.82 per Mcf on April 20.
Massively discounted gas prices drove utility companies with the flexibility to rebalance their production mix to burn more natural gas and less coal. In the first half of 2012, when natural gas was especially cheap, several utilities announced plans to curtail coal-powered generation in favor of gas-fired plants.
For instance, The Southern Company (NYSE:SO)‘s share of coal used for total power generation fell from 70% to 30%, while the share of natural gas rose from 11% to 47%. Not surprisingly, the company ended up burning more natural gas than it did coal for the first time in its century-long history.
Impact on coal producers
As increasing numbers of utility companies made the switch to natural gas, the price of thermal coal – the varietal used mainly for power generation – plummeted, leading many producers to reduce production drastically and, in many cases, lay off workers.
For instance, in the second quarter of last year, Arch Coal Inc (NYSE:ACI) shuttered four thermal coal mines in Appalachia and idled another, as it struggled to cut costs in the face of falling demand for thermal coal. Not long after, in September, Alpha Natural Resources, Inc. (NYSE:ANR) announced that it would idle mines in Pennsylvania, West Virginia, and Virginia and lay off almost 10% of its employees.