Our apartment building and a neighbouring one experienced a sudden loss of power recently and GRE was contracted to come in and figure out what the issue was and solve it. The worked tirelessly, in a crazy heat spell, for over 12 hours to ensure our buildings had power restored. The two employees on site were polite, professional and focused. They took the time to do quality work, double checking work they completed and provided great communication with the multiple residents in the two buildings.