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Survey of Geothermal Heat Pump Shipments                                       
Data for: 2004
Release Date: March 2006
Next Release Date: March, 2007

Table 62. Geothermal Direct Use of Energy and Heat Pumps, 1990 -2004
(Quadrillion Btu)
Year Direct Use Heat Pumps Total
1990 0.0048 0.0054 0.0102
1991 0.0050 0.0060 0.0110
1992 0.0051 0.0067 0.0118
1993 0.0053 0.0072 0.0125
1994 0.0056 0.0076 0.0132
1995 0.0058 0.0083 0.0141
1996 0.0059 0.0093 0.0152
1997 0.0061 0.0101 0.0162
1998 0.0063 0.0115 0.0178
1999 0.0079 0.0114 0.0193
2000 0.0084 0.0122 0.0206
2001 0.0090 0.0135 0.0225
2002 0.0090 0.0147 0.0237
2003 0.0086 0.0274 0.0360
2004 0.0090 0.0289 0.0379
Note: 2003: Data is revised. Direct use includes applications such as: district heating, aquaculture pond and raceway heating, greenhouse heating and agricultural drying.
Source: John Lund, Oregon Institute of Technology, Geo-Heat Center (Klamath Falls, Oregon, March 2005).