That simple change allows new plants to generate the same amount of electricity with 30 percent to 40
percent less coal.
It was then used to power very big and inefficient steam engines that pumped water out of mines; when James Watt developed his steam engine that used 75
percent less coal than the Newcomen engine it replaced, the common thinking was that the increased efficiency meant that they would burn less coal.
Not exact matches
RICHMOND, Va. (AP)-- Dominion Energy Virginia said Tuesday that it plans to build at least eight new natural gas - fired plants during the next 15 years, cementing its shift away from
coal, while depending on renewables for
less than 10
percent of its energy capacity.
GREG WARREN: With
coal fired and natural gas plants continuing to generate around two thirds of the nation's electricity and renewables accounting to
less than 10
percent, there remains plenty of room for growth.
In fact, much of the overall decrease in energy consumption can be traced to the shift from
coal to gas, because modern gas - fired plants may use up to 46
percent less energy to produce the same amount of electricity.»
And burning natural gas releases 43
percent less CO2 than burning
coal.
Robert Finkelman, a former USGS coordinator of
coal quality who oversaw research on uranium in fly ash in the 1990s, says that for the average person the by - product accounts for a miniscule amount of background radiation, probably
less than 0.1
percent of total background radiation exposure.
In addition, geothermal power plants have energy efficiencies of just 8 to 15
percent,
less than half that of
coal plants.
Keeping in mind the enormous stake that panel members ExxonMobil and Shell have in the oil, natural gas and
coal industries, here is a look at the panel's take on why oil and
coal have been so difficult to replace by the following alternative energy sources: Natural gas ExxonMobil favors boosting the U.S.'s consumption of natural gas, in part, because it produces at least 50
percent less greenhouse gas per hour when burned compared with
coal, Nazeer Bhore, ExxonMobil senior technology advisor, said during the panel.
Of the
coal ash produced,
less than.02
percent is recycled for agriculture production, Li said, making it one of the least used byproducts of
coal combustion.
«With
less than 5
percent of world population, the U.S. uses one - third of the world's paper, a quarter of the world's oil, 23
percent of the
coal, 27
percent of the aluminum, and 19
percent of the copper,» he reports.
A new report by the U.S. Energy Information Administration found that U.S.
coal use is down 29
percent compared to 2007 levels, and nearly every state is using
less of the environmentally destructive resource.
The oil sands are still a tiny part of the world's carbon problem — they account for
less than a tenth of one
percent of global CO2 emissions — but to many environmentalists they are the thin end of the wedge, the first step along a path that could lead to other, even dirtier sources of oil: producing it from oil shale or
coal.
This proven technology has helped shift more electricity generation to natural gas, which emits
less nitrogen oxides, sulfur dioxide, mercury and more than 50
percent less carbon dioxide than
coal.
The United States clearly is using
less coal: Domestic consumption fell by about 114 million tons, or 11
percent, largely due to a decline in the use of
coal for electricity.
In 2016, 17 states produced 10
percent or
less of their generation from
coal (compared to nine states 10 years ago in 2007 and 16 states in 2015).
The share of natural gas is expected to exceed 25
percent by 2040, while the share of
coal falls to
less than 20
percent.
Natural gas, which burns cleaner than
coal and emits about half as many greenhouse gases, was responsible for
less than 19
percent of U.S. power generation.
Since
coal consumption has actually declined by 6
percent since its peak in 1996, however, there is reason to believe its use will either continue to drop or will increase
less than projected.
Renewables are about 1/3 the price of nuclear, half that of
coal, and 10 - 20
percent less than gas in the U.S.
According to the NEA, in the first three quarters of 2017,
coal consumption in China reached 2.81 billion metric tons, an increase of
less than 1
percent from 2016.
Electricity generators have chosen natural gas for its affordability and reliability, often replacing
coal - fired power plants and emitting up to 56
percent less greenhouse gases than
coal for the same amount of electricity.
Even if
coal consumption increased by 3
percent to 3.90 billion tons in 2017 as the Global Carbon Project report said, it is still far
less than the 4 billion tons in 2015, let alone challenging the 4.24 billion tons peak in 2013.
About half of this reduction is due to differing carbon intensities of the fuels (natural gas emits 40
percent less carbon than
coal per unit of heat).
And in China, wind power — despite accounting for
less than 3
percent of electricity generation — recently overtook nuclear to become the country's third largest power source after
coal and hydropower.
The authors found that wells in the Marcellus region emit 20
percent to 50
percent less greenhouse gases than
coal used to produce electricity.
In reality, Ohio uses
less natural gas (5
percent) for electricity generation and more
coal (82
percent) compared to the national average according to data from the Energy Information Administration.
Two - thirds of Walmart's rooftop solar is located in places where
coal makes up
less than 20
percent of the electricity these stores pull from the local grid.
Coal's share of global electricity generation is projected to decline from about 40
percent in 2016 to
less than 30
percent in 2040.
Although the United States leads the world in
coal reserves,
less than 10
percent of the U.S.
coal produced last year was exported.
Less than 1
percent, about 4.4 million metric tons, was steam
coal bound for Asia, but that marked a dramatic 438
percent increase over 2009.
The report also found that burning natural gas generated far
less damage than
coal, although still significant: a sample of 498 natural gas fueled plants (71
percent of gas - generated electricity) produced $ 740 million in total nonclimate damages in 2005.
Nicholas Akins, chief executive of AEP, one of the nation's largest carbon dioxide emitters, said that his company is already producing 21
percent less CO2 than it did in 2005 and that it plans to retire another 6,600 megawatts of
coal plants by late 2015 that will bring it to a level 25
percent below 2005.
Most of the plants are over 40 years old or 400 megawatts or
less, which makes up about 30
percent of PJM's current
coal fleet.
It charges a slowly rising fee on fossil fuel producers at the entry point to our economy (
coal mine, gas / oil well or import terminal) but then returns 100
percent of the fee (
less administrative costs) back to all consumers equally via a monthly dividend check.
The push for renewables in Iowa makes a difference, as the state continues to rely on
coal as the primary fuel for generating electricity, at more than 45
percent, while wind supplies 37
percent, and solar panels produce
less than 1
percent, according to the U.S. Energy Department.
Although hydrogen generates about 62,000 Btu per pound, it accounts for only 5
percent or
less of
coal and not all of this is available for heat because part of the hydrogen combines with oxygen to form water vapor.
(21) The other industrial sector accounted for 8
percent of total
coal consumption in 1992, slightly
less than in 1980.
Coal is the worst offender, a dirty energy source that produces
less than half our electricity but nearly 80
percent of all power plant carbon emissions.
Coal used to produce coke is virtually all bituminous in rank;
less than 1
percent is anthracite.
Cutting methane leakage rates from natural gas systems to
less than 1
percent of total production would ensure that the climate impacts of natural gas are lower than
coal or diesel fuel over any time horizon.
When all these emissions are counted, gas may be as little as 25
percent cleaner than
coal, or perhaps even
less.
Coal is expected to fall to
less than 30
percent in 2040 from approximately 40
percent in 2016.
Illinois's power plants have reduced their carbon dioxide emissions by 3
percent between 2005 and 2012, mostly by using more natural gas and renewables and
less coal.