Nalcor will install new generating capacity at Portland Creek in the mid-2030s despite having about 1200 gigawatt hours of electricity available from Muskrat Falls.
In his latest assessment - Muskrat Falls – The Importance of Transparency [scribd pdf] - JM concludes that Nalcor apparently plans to build Portland Creek at additional cost to consumers in Newfoundland and Labrador in order to keep capacity available at Muskrat Falls to meet the commitment to Emera.