Louisiana is the latest state to redefine natural gas as green energy under a new law the Republican governor signed this week, even though it's a fossil fuel that emits planet-warming greenhouse gases.
Three other states led by Republicans— Indiana, Ohio and Tennessee— have passed similar legislation. In some Democratic-led states, there have been efforts to phase out natural gas. New York and California cities like San Francisco and Berkeley have moved to ban natural gas hookups in new buildings, though some of these policies have been successfully challenged in court.
President Donald Trump has signed a spate of executive orders promoting oil, gas and coal, which all warm the planet when burned to produce electricity. The European Union previously designated natural gas and nuclear as sustainable, a move that Greenpeace and the Austrian government are suing over.
Louisiana Gov. Jeff Landry, a major booster of the state's petrochemical industry, says the new law ''sets the tone for the future'' and will help the state ''pursue energy independence and dominance.''
Environmental groups say these new laws are part of a broader push by petrochemical industry-backed groups to rebrand fossil fuel as climate friendly and head off efforts to shift electric grids to renewables, such as solar and wind. It's "pure Orwellian greenwashing,'' said Tim Donaghy, research director of Greenpeace USA.
Globally, the term green energy is used to refer to energy derived from natural sources that do not pollute — solar, wind, hydropower and geothermal energy. Louisiana's law could enable funds slated for state clean energy initiatives to be used to support natural gas.
Natural gas has been the top source of electricity generation in the United States for about a decade, since surpassing coal. Coal and natural gas both produce carbon dioxide that warms the planet when burned, but coal produces over twice as much.
Switching from coal to natural gas lowers carbon dioxide emissions, but it can increase emissions of methane. The primary component of natural gas, methane is an extraordinarily powerful greenhouse gas, more potent at trapping heat than carbon dioxide and responsible for about 30% of today's global warming.