The village of Cefn Coch has been named as the preferred site for an electricity substation in Mid Wales.
A meeting was held in Welshpool today, where National Grid made the announcement.
The plans could see the hub linked by more than 100 high voltage pylons.
A National Grid spokesperson said:
A number of public exhibitions have been held by National Grid to discuss the plans, with more than 6 thousand people attending.
The proposals have sparked protests - over a thousand campaigners demonstrated outside the Senedd in Cardiff Bay in May last year.
Those who are against the substation and the pylons, which will service wind farms, say they will disfigure the countryside.
Montgomeryshire Against Pylons (Map) have described the decision as a "travesty".
A meeting is being organised tonight in Cefn Coch for residents.
Montgomeryshire AM Russell George said:
The meeting for residents will take place at 5pm.