Energy prices, emission credits, and tax abatements are all
factors that encourage friendly environmental technologies. At
present low energy prices and modest emission credits and tax
abatements provide weak incentives. However, as time passes
energy price may increase due to scarcity. Similarly, air quality will
become a priority if society continues to pollute the environment.
In such a case, carbon and nitrate credits would become much more
robust. Any of these scenarios would result in improved the NPV
and payback.