100 megawatts, and would create no new flooding, but no in-service date has been set for this project, and no plans are in progress to build the station at this time. Pointe du Bois replacement: In 2007 Manitoba Hydro announced plans to replace the 90-year-old Point du Bois plant with a new $800 million (Canadian) generating project at the same site, with greater output, reliability, and efficiency. In September 2009, the company completed its headquarters building, the Manitoba Hydro Tower on Portage Avenue. About 1650 Hydro employees work in this building. It is the 4th tallest building in the city at 112.5 metres to the top of solar chimney with a total of 22 stories and floor space. The building is intended to be one of the most energy-efficient building of its size in North America, and to consume 60% less energy than the national building code requirements. Wuskwatim generating station Wuskwatim generating station is on the Burntwood River near Thompson. The general civil works contract was awarded in 2008, and first power from the project occurred in June 2012. The plant was officially opened on July 5, 2012, while construction of the remaining two units continued. This 200 MW station has three hydraulic turbine generator units, causes less than one half square kilometre of new flooding, and has only a small reservoir. This project had the most extensive environmental review of any generating project in Manitoba. Participation of the Nisichawayasihk Cree Nation (NCN) First Nation was passed by a June 2006 referendum by NCN members. This partnership between NCN and Manitoba Hydro will allow advancement of the in-service date to 2012 and opportunities for additional export revenue. Otherwise the domestic load growth would not require this new capacity until several years later. Excavation and primary concrete for the dam, powerhouse and spillway was mainly completed by June 2009. The spillway gate hoist housing had been erected and the river closure and diversion occurred in July 2009. Construction required an access road and construction camp site, and a construction power substation, along with services such as water supply and sewage lagoons for the camp. A new 230 kV gas-insulated substation was constructed adjacent to the dam site, which will distribute power from the Wuskwatim generators to the transmission network. A cofferdam was constructed for excavation of the tailrace and spillway channel, and subsequently removed. Secondary concrete and turbine installation continued