On Tuesday, a ceremony was held at the Borden-Carleton substation to celebrate the completion of the underwater power cable project.The installation of two power cables under the Nortumberland Strait, which was a $142.5 million investment cost-shared by the governments of Canada and PEI, increases the province’s total electric power capacity to 560 megawatts. Officials say it will also contribute to ongoing efforts to reduce the use of fossil fuels by building a cleaner electricity supply.The two 180-megawatt underwater cables connect Prince Edward Island to mainland New Brunswick, and replace decades-old cables that had a total capacity of 200 megawatts of energy.The new cables were officially “plugged in” during Tuesday’s energization ceremony.