Belco has applied to modify approved plans to redevelop its Pembroke facility, adding an additional smoke stack.The company now hopes to build two 3.6m (11ft 9.7in) wide steel exhaust stacks rather than the 5.3m (17ft 4.6in) wide multi-flute concrete stack originally proposed, according to an application received by the Planning Department.The new proposed stacks would be 65m (213ft 3in) tall, the same height as the previously approved single stack, and be built between Cemetery Road and St John’s Road as part of the facility’s new North Station.The move is indented to reduce the cost of the redevelopment.In a letter included in the application, Belco’s Roger Todd wrote: “The two smaller stacks allow for an accelerated construction time, avoid stranded assets, present fewer technical challenges and cost $1.2 million less expense than the single concrete stack.”The two stacks will be constructed separately, with the first erected as three new engines are installed. The second tower will be built in a later phase of construction as another two engines are added to the site.If approved, the stacks will sit around 1.4m (4ft 7.1in) apart and will be painted beige to match the colour of the powerhouse cladding.The application also calls for the construction of a new building for the fuel treatment facility. It was originally included in the powerhouse building which is to be made smaller in order to reduce costs.The draft of the application is available for public view at the Department of Planning headquarters.In the application, Mr Todd wrote that an artist’s impression of what the site will look like when complete has not been finished. It is hoped images will be added to the application before the end of the month.Belco has said the new site needs to be in place next year to ensure reliable power delivery across the Island as several of the plant’s existing generators are already beyond their normal service life.The North Station is described as the first step in a ten-year energy plan for the Island, which includes phasing out the outdated engines in favour of more efficient engines.The company continues to focus on fossil fuels as the Island’s primary energy source but has also called for a greater emphasis on renewable energy. Belco has set a goal of having 20 percent of the Island’s electricity coming from renewable sources by 2020.