I would say that Greenpeace would be opposed to this plan because it would involve burning coal and other fossil fuels presumably and since doing so contributes to greenhouse gases and exacerbates climate change which is causing an increase in global temperatures and extreme weather conditions like the ones that caused the terrible flooding of Hurricane Katrina for example, then those factors could form part of their argument. Also, I believe they would also promote green industries like ones that used say power from wind turbines and perhaps the use of large lithium recharge-able batteries that are being perfected now as examples of clean energy sources.