by Niall McCarthy | January 26, 2017
Renewable energy has made impressive strides in the U.S. in recent years
Last year, solar power accounted for 43 percent of the Electric Power Generation sector’s workforce, while fossil fuels combined employed 22 percent
The statistic will be welcomed with open arms by those trying to refute Donald Trump’s assertion that renewable energy projects are bad news for the U.S. economy.
Around 374,000 people were employed in solar energy, according to the report while generation through fossil fuels had a workforce of just over 187,000. The solar boom can be attributed to construction work associated with expanding generation capacity.
What Do Americans Think About Fossil Fuel vs. Renewable Energy?
Solar power and wind power (alone!) employ almost twice as many Americans as all nuclear and all fossil fuel power plants combined, but renewable energy gets only one-quarter of the subsidies in from 2010 onward.
Which might be a factor in the minds of Americans who look forward to renewable energy meeting their future energy demand.
(Non-hydropower) Renewable Energy Continues to Grow in the U.S.
Despite the low subsidy amounts paid to renewable energy in the United States, non-hydropower energy continues on its growth trajectory and it’s now cheaper to build new solar capacity, than to build new coal capacity.
New Solar Now Cheaper Than New Coal
Costs for new solar power plants continue to plummet (without subsidy) vs. new coal power plants (with a small subsidy) is reflected in the Levelized Cost of Electricity (LCOE) per Kilowatt Hour price.
“As early as 2018, solar could be economically viable to power big cities. By 2040 over half of all electricity may be generated in the same place it’s used. Centralised, coal-fired power is over.” — Solar has won. Even if coal were free to burn, power stations couldn’t compete — The Guardian
Billions of Gallons of Water Used Monthly by Conventional Energy
Many coal-fired power plants and several nuclear power plants produce well over 1000MW (1 GW) of electricity and it is easy to extrapolate their water usage.
For instance, a 1.6 GigaWatt(GW) coal-fired power plant (for the purposes of this discussion there’s a 1.6GW coal-fired power plant in Texas) uses 1,760,000 gallons of water per hour, while an equivalent-sized nuclear power plant uses 1,280,000 gallons of water per hour.
Meanwhile, a natural-gas-fired power plant producing the same 1.6GW of electricity would consume 480,000 gallons per hour, while a 1.6GW solar or wind power would consume zero gallons per hour.
Of course hydro-power does not consume any water during its decades of reliable power production, water merely falls through turbines and back into the river a bit further downstream — although during the construction of the dam, spillways, and hydro-electric turbine rooms, millions of gallons of water are used to make the concrete.
The Future of Energy in the United States
Renewable generation capacity expected to account for most 2016 capacity additions in the U.S.
The chart below shows just how much wind power in the United States has grown in recent years.
The chart below shows the expected growth of solar photovoltaic power in the United States (does not include solar thermal)
The chart below displays total utility-scale capacity additions from 2010 to 2016. For the third consecutive year, more than half of the capacity additions are renewable technologies, especially wind and solar.
From 2013 through 2040, U.S. electricity demand is expected to grow approximately 1 trillion kiloWatt hours(kWh) with natural gas and renewable energy showing steady growth, while coal-fired power generation and nuclear power show slight declines according to the U.S. Energy Information Administration.
If the United States converted their existing coal-fired power generation to natural gas by 2020, the U.S. could easily meet every international and domestic clean air target until 2050 as coal burns 10,000 times ‘dirtier’ (anthracite, or black coal) to 1,000,000 times ‘dirtier’ (lignite, or brown coal) when compared to natural gas.
Full cost accounting for the life cycle of coal — Harvard Medicine
It goes without saying that if the United States replaced coal-fired power generation with renewable energy, it would surpass every U.S. international and domestic clean air target, lower U.S. heathcare and infrastructure spending by billions of dollars annually, save the U.S. billions of gallons of fresh water per month, provide millions of good-paying jobs for American workers — and prove the United States is still an exceptional power in the 21st-century. Not bad!