Because the Earth maintains a constant temperature just 10 feet below the surface, systems that use shallow heat to control building temperatures above ground represent an easily accessible resource that can be deployed almost anywhere in the world. While the use of geothermal heat pumps and other forms of direct-use geothermal applications still make up a minuscule percentage of the overall heating and cooling market, growing electricity demand, rising energy prices and increasing regulation around carbon emissions and energy efficiency will push demand higher over the next several years. Used on their own, geothermal heat pumps are capable of producing large reductions in energy use and peak demand in buildings. Used in conjunction with clean energy generation and whole-building efficiency, geothermal heat pumps can provide substantially increased benefits.
to a recent report from Pike Research, geothermal heat pump sales will experience
strong growth rates in the next several years, with annual unit shipments in
the United States
increasing from just fewer than 150,000 in 2011 to more than 326,000 units by
2017. The use of geothermal heat pumps integrated with energy management systems,
such as programmable thermostats and utility demand response programs, will
give homeowners and companies powerful new capabilities for adapting
electricity loads in response to peak heating and cooling periods and for
reducing energy costs.
geothermal applications, including geothermal heat pumps, face unique obstacles
– primarily high installation costs,” says senior analyst Mackinnon Lawrence.
“But increased retrofit activity, a rebound in construction, and growing
interest in the commercial and institutional sectors will drive strong growth
through 2017 for geothermal heat pumps.”
Led by the United States, China
78 countries utilized geothermal for direct-use applications in 2010.
Geothermal heat pumps account for more than half of the direct use of
geothermal worldwide, followed by bathing and swimming. Other applications
include space heating, greenhouses, industrial processes, snow melting and open
ground heating. While cost and lack of consumer awareness remain primary
obstacles to increased adoption, tax incentives and policies supporting
building efficiency improvements will help overcome those barriers. Pike
Research anticipates dramatic growth in the 2011-2017 timeframe, with the total
worldwide capacity for geothermal direct-use applications increasing by 179
percent during that period.
Research’s report, “Geothermal Heat Pumps and Direct Use,” analyzes the global
market opportunity for direct utilization of geothermal energy with a primary
focus on heat pumps. The study includes a comprehensive examination of direct-use
markets, demand drivers, existing and emerging technologies, the public policy
and regulatory environment, and key industry players. Market forecasts,
segmented by geography, extend through 2017, and include examinations of market
dynamics in all regions worldwide. An executive summary of the report is
available for free download on the firm’s website atwww.pikeresearch.com.