Power systems around the world are changing. Renewable energy, mainly in the form of wind and solar generation, is being added everywhere, while more traditional forms of power, such as coal-fired and nuclear generation, are being retired from the grid. Meanwhile, natural gas-fired generation has taken the lead role in facilitating the transition by providing relatively quick ramping capability and stable baseload power to backup intermittent renewables.

However, there is a lot of research and development work underway that could eventually push natural gas out of the mix. The reason is that gas, like other fossil fuels, releases CO2 and other emissions to the atmosphere, albeit at lower quantities than coal, fuel oil, and diesel on a per-kWh-generated basis. One of the

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