Projects
Pebble Creek Property
Old temperature and lithological data from slim holes were recently integrated in a GIS database (consisting of most recent geological, geochemical and topographic data). Temperature models were created to delineate the geothermal up-flow zone and to assess the extent of the high-enthalpy reservoir, accessible from the permit areas.
Temperature gradient models (Fig. 2) were extrapolated to a depth of 3000m. The temperature model at 2500 m was considered for calculating the extent of the high-enthalpy geothermal power reserve. The minimum high enthalpy reserve was estimated based on the extent of the highenthalpy zones (above 230°C) accessible at an average depth of 2500 m. The extent of the high enthalpy zones is estimated to be at least 10 square kilometres.
The total high-grade heat energy convertible to power is conservatively estimated above 55 million Megawatt hours of electricity, which can support a 230 MWe generating capacity for 30 years.
Temperature data obtained from old slim holes conform with recent geothermometric data obtained from analysis of Pebble Creek hot springs. Presence of permeability is evidenced by observed primary and fracture permeability in slim holes (Nevin, 1992).
Deep confirmatory drilling is scheduled to commence in the fall of 2009. The project is expected to bring its first 100 MWe on line by 2012. A 230 kV line is needed to tie the Meager Creek South and North (Pebble Creek) geothermal fields in to the B.C. Transmission Corp. system. Preliminary studies have identified two potential routes utilizing existing transportation corridors - the Pemberton Valley to tie-in at Pemberton, and the Birkenhead Valley to tie-in at Poole Creek. The Pemberton Valley line which is the most likely corridor is about 60 km (connecting the Meager fields to a BCTC junction in the City of Pemberton).
