Recently, Mr Olsen told a meeting of the Geothermal Resources Council that the last thing they should be promoting their product as is a carbon-free alternative for base-load power.
Until recently, it has boasted that, unlike other renewables, such as wind or solar, it is a base-load resource similar to coal, gas or even nuclear, but without greenhouse gases or radiation fears.
Mr. Hughes, using Mr. Howarth's calculations, also concludes that replacing coal with natural gas for baseload electricity production will most likely make greenhouse gas emissions worse.