Wherever in the world wind power is installed to significant degree, new transmission lines must be built, lest the spurting occasional wind-produced electricity will thermally overload the existing lines and severely disrupt the otherwise reliable grid. Yet in Maine, when the $1.4 Billion CMP upgrade (Maine Power Reliability Project) was forced down ratepayers' throats at ratepayer expense, we were told that this project was needed because Maine had "aging transmission lines", despite the fact our lines are always maintained and Maine's population growth is forecast as basically nil over the next 20 years. The fact of the matter is that this was a costly lie perpetrated on Mainers and Maine businesses as a special favor to the wind industry and our PUC completely betrayed us on this one. In fact, their own staff objected to this expenditure but the three PUC commissioners overruled them.
More reading on how Mainers were betrayed here:
If the lines are not built, supporters said, the stress on the existing power grid will be enormous.
Dozens of protest groups have sprung up over the past year along the 500-mile path of the project, SuedLink, one of four high-voltage direct current lines that are to carry wind-generated power from north to south.