To put that figure (3.87 cents per kWh) in perspective, if a carbon tax were initiated at $30 per tonne (At that price, the world’s annual CO2 output would be priced at $1 trillion – approximately 35 billion tonnes x $30 — and it is hard to see how Wall Street could resist getting in on the action), a coal power plant, which emits almost 1 metric ton of CO2 per megawatt-hour, would have the same cost just for carbon as the entire “all-in” cost for PV. The coal plant also has to constantly pay for fuel. (Though, to be fair, the NV Energy price takes advantage of the 30 percent Investment Tax Credit (ITC). The ACWA project in Dubai, as mentioned, does not).