The Globe and Mail reports in its Saturday edition that Atkinsrealis's Monark nuclear power reactor, which had aimed to produce substantially more electricity than previous Candu reactors, will actually produce slightly less, according to the Canadian Nuclear Safety Commission. The Globe's Matthew McClearn writes that Monark has been marketed by its designer, Atkinsrealis, as boasting a electricity generation capacity of 1,000 megawatts. However, the CNSC recently updated its website to reflect a much lower capacity as the regulator begins a preliminary review of the Monark. "As the design has progressed, Atkinsrealis has further defined the power of the reactor," CNSC said in a statement confirming the new output, which it said is around 850 megawatts. Atkinsrealis disputed that, asserting that its submission to the CNSC was for a 925-megawatt reactor. In either case, the Monark's lower-than-promised output could represent a problem as it competes head-to-head with much larger reactors. Since the last Candus were built decades ago, the reactor market has continued a long-standing trend toward ever-larger units. Construction began on 73 reactors worldwide since 2016. Their average output approached 1,100 megawatts.