Sigma assisted TLC with the complete project development of the 2 MW Atlin Hydroelectric Project. This project was submitted under BC Hydro’s 2005 ‘Atlin RFEI’ call for proposals for displacement of the diesel fuel used in the town’s electrical system. Sigma performed project permitting and licencing and completed detailed design, procurement and performed construction field services. The project began operation in April 2009.

Sigma provided engineering design, approvals and tender for the Water to Wire Turbine Supply contract and the General Construction contract, services during construction and commissioning for this 2.8 MW project on Vancouver Island. The project has been in operation since February 2009.

Sigma provided engineering design, environmental assessment, approvals and construction management for a 3.8 MW hydroelectric development near Gold River on Vancouver Island, BC.

Sigma provided engineering design, environmental assessment, and approvals for this 10.8 MW hydroelectric development near Squamish, BC. The Project consists of: an intake structure, 3.0 km long 1.2 metre diameter pipe (HDPE, ductile iron and steel), a powerhouse that houses the turbine/generator, access roads, a substation and 1.4 km length of 69 KV transmission line connecting to an existing BC Hydro line.

Engineering design, environmental assessment, and approvals for a 7 MW hydroelectric development near Prince Rupert, BC.

Sigma is involved with the remote community of Hartley Bay in determining the site and providing the design/tender of a 900 kW hydroelectric plant. The project is supported by the B.C. Government’s First Nation and Remote Community Clean Energy Program. The hydro plant is an isolated system that will generate over 2GWh per year to offset the use of diesel-generated electricity provided by a 3-unit 1000kW diesel system.

Engineering design, environmental assessment, and approvals for the diversion of a portion of the flows from McKnight Lake into the nearby Brown Lake reservoir via a lake intake, 420 metre long tunnel and 1,200 metre long pipeline.

Study of upgrade and other long term options (up to addition of 14 MW) for an existing 4 MW station.

Study of alternatives for increasing flow through 3 hydro plants on the Campbell River. Included efficiency improvement study and recommendations to alter operating regime.

Design and project management of 1300 kW addition to an existing BC Hydro facility as an independent power project.

Preliminary studies of the 18 MW project to serve a proposed mine in northwestern BC. Work included hydrological studies, and hydraulic studies and preliminary designs to address high seasonal sediment loads in addition to developing general project arrangements and producing a project cost estimate.

Feasibilty study for a proposed 7 MW hydro project in Atlin, BC.

Technical review and preparation of the power supply and heat purchase contracts for this 24 MW coal fired project located in Hebei Province, China.

Contractor’s Design Engineer with responsibility for detailed design of the 4,300 metre long, 1.5 metre diameter welded steel low and high pressure penstock which included powerhouse bifurcation, two pipe bridges, thrust blocks and appurtances for this 16 MW design-built project.

Project identification, hydrology, environmental studies, preliminary design of several hydro projects up to 40 MW in size.

Use of Small Reservoir Operations Model (SROM) to examine optimization of the operation of the Cheakamus and Clowhom Generating Plants under proposed changes to the plant operating conditions.

Use of Small Reservoir Operations Model (SROM) to examine optimization of the operation of the Cheakamus and Clowhom Generating Plants under proposed changes to the plant operating conditions.