Geothermal Energy
Legislation spurs geothermal exploration

Ormat Technologies, Inc. announced it will accelerate geothermal exploration work this summer on Mount Spurr following Alaska Governor Sean Parnell’s signing of Senate Bill 243. Originally, the annual royalty rate paid from geothermal production on state lands was a minimum of 10% of gross revenues. This bill significantly reduces that rate to the same level paid on Federal land.
 
“Alaskans want to live and work where they have access to reliable and affordable energy,” said the bill’s sponsor Senator Lesil McGuire. “By reducing the royalty rate on geothermal power, we acknowledge the unusually high costs of geothermal development in Alaska but still protect the State’s interests. This bill will ultimately lower the cost of clean, reliable power to the ratepayers.”
 
“SB 243 provides the initial regulatory framework that is critical to attracting private sector investment capital necessary to develop Alaska's vast and very promising geothermal resources,” said Rep. Mike Hawker. “The geothermal resource in south-central Alaska has the potential to replace nearly one-third of our region’s electrical generation that is currently dependent upon a nearly depleted supply of natural gas from Cook Inlet. Geothermal resource development is one of the routes to our future energy security and SB 243 is the first step down that road.”
 

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Geothermal split system air handlers

Tranquility (TAH) Air Handler Series ClimateMaster has introduced the new Tranquility (TAH) Air Handler Series with sizes in the 26, 38, 49, and 64 MBH range. Tranquility air handlers are specifically designed and matched for use with the Tranquility indoor and outdoor geothermal split systems, making them an ideal choice for hi-efficiency retrofits. When paired with a split unit, the TAH has the highest energy efficiency ratings of any system on the market today and uses the environmentally friendly refrigerant, Earthpure HFC0410A. It also exceeds ASHRAE 90.1 and Energy Star 3.0 efficiencies, and meets federal requirements for the 30% tax credit on installation costs.

TAH units are fully convertible upflow, downflow, horizontal, as well as right and left downflow, making them ideal for remote applications such as a crawl spaces or attics. Other features include condensate over-flow protection, 230v-115v compatibility, bi-directional thermal expansion valve, control transformer with circuit breaker protection, large removable access panels, and dehumidification mode for high latent cooling. Options include electronic thermostat and auto-changeover thermostat with 3-stage heat, 2-stage cool, indicator LEDs, and a 10-year limited labor allowance. 

ClimateMaster
www.climatemaster.com
 

 
The Other Type of Geothermal Power: GeoExchange

GeoExchange drillingBy Simon Duck

Geothermal can be split into two main categories: one using “hot rock,” the other “warm soil” technology. Far more common, or commonly referred to, is the former. Hot rock technology is popular, but expensive to construct and restricted to suitable rock formations. But what about the other type?

Warm soil technology uses a shallow bore hole a few hundred feet deep and can be installed in almost any type of ground. The temperature of the soil is more stable than the air throughout the seasons, making it ideal for heating and cooling buildings. Ten meters (33 feet) down the temperature is generally about 13°C (55°F), but can range from 5°C (40°F) in very cold regions to 20°C (70°F) in extremely hot climates. This stability can be used with geoexchange heat pumps to transfer heat out of the ground in winter to heat buildings, and can be reversed to cool buildings in summer. Geoexchange is a common term for this type of energy use.

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Canadian Geothermal Energy Project Database

Canadian Geothermal Energy Project DatabaseBy Nicole Robson

The Canadian Geothermal Energy Association (CanGEA) recently released the CanGEA Member Projects Database. The report, which outlines more than 70 different projects under development around the world, is a major step for the Canadian geothermal energy industry and the first of its kind for Canada.

According to the report, CanGEA members are currently working on developing more than 1,400 MW of new geothermal power, in addition to nearly 2,000 MW of currently installed geothermal capacity. The projects listed span four continents and 11 countries, giving CanGEA members a global reach in their operations. Although there is currently no geothermal power production in Canada, there are a number of projects under development that may soon come online to supply Canada’s first few megawatts of geothermal power.

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