If there is to be environmental regulation, what kind of regulation would t
he main interest groups then prefer? This political distortion must be take
n into account when designing future environmental regulation such as CO2 r
egulation. The three main interest groups in the U.S. (private business, en
vironmentalist groups and the electricity sector) prefer a grandfathered pe
rmit market. Business is attracted by this solution because free initial di
stribution of permits both favours existing sources financially and, furthe
rmore, creates a barrier to entry for new firms. Environmentalist groups ha
ve changed attitudes and promote the idea too as a way of negotiating highe
r target reduction levels with industry to maintain voluntary contributions
from their members. Finally, electric utilities prefer a grandfathered per
mit market, and this step towards less planned economy may be explained by
the rise of competition in the U.S. electricity sector. Therefore, it is su
ggested that a grandfathered permit market is a more effective policy than
a tax in relation to organized interests such as industry, electric utiliti
es and environmental organizations. In perspective, the grandfathered permi
t market may be mixed with the use of taxes. In the case of CO2 regulation,
for example, taxes may be applied to badly organized polluters, such as ho
useholds and the transport sector, because their lobbying power is weak.