Contributions to the greenhouse effect

Natural gas is a major influence in the enhanced greenhouse effect. Natural gas produces a large amount of carbon dioxide and nitrous oxide when burnt. If natural gas is not burnt properly it releases methane.
Natural gas produces less emissions than other fossil fuels. The following table shows this:

Wind power contributes to the enhanced greenhouse effect during construction. Transporting equipment and materials, constructing the turbines and many other aspects when constructing the farm all produce emissions. The main emission produced during construction is carbon dioxide.
It took the Macarthur wind farm 6 months to payback all the emissions produced during construction.
The only gases the wind farm produces, now that it is in action, is from the vehicles and other small activities the workers do. These emissions are easily payed back though. The turbines release no air pollutants.

This page explains how each soure contributes to the enhanced greenhouse effect.

Natural gas powerplants continue to make emissions during construction and after production.

Table showing amount of emissions released by fossil fuels (2014)

Fossil