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Geothermal is the future of the planet, and pretty cheap to install and maintain.
Where I live, there is no need for heating of any type. If I could afford it, I would install a PV system for electricity though. Still might.
If I were to build a home, this is the system I would install.
originally posted by: Kester
Can you tell us about a working geothermal plant other than Iceland, (where steam come out of the ground?)
originally posted by: ANNED
Geothermal is not clean.
You have sulfuric acid, hydrogen sulfide, large amounts of CO2,and mercury, in the steam known as non condensable gases.
And they can cause earthquakes due to the fracking needed to get high steam flow.
I worked at the Coso geothermal power plants in calif doing construction for about 2 years.
The largest dry steam field in the world is the Geysers, 116 km (72 mi) north of San Francisco. It was here that Pacific Gas and Electric began operation of the first successful geothermal electric power plant in the United States in 1960. The original turbine lasted for more than 30 years and produced 11 MW net power. The Geysers has 1517 megawatt (MW) of active installed capacity with an average capacity factor of 63%. Calpine Corporation owns 15 of the 18 active plants in the Geysers and is currently the United States' largest producer of geothermal energy. Two other plants are owned jointly by the Northern California Power Agency and the City of Santa Clara's municipal Electric Utility (now called Silicon Valley Power). The remaining Bottle Rock Power plant owned by the US Renewables Group has only recently been reopened. A nineteenth plant is now under development by Ram Power, formerly Western Geopower. Since the activities of one geothermal plant affects those nearby, the consolidation plant ownership at The Geysers has been beneficial because the plants operate cooperatively instead of in their own short-term interest. The Geysers is now recharged by injecting treated sewage effluent from the City of Santa Rosa and the Lake County sewage treatment plant. This sewage effluent used to be dumped into rivers and streams and is now piped to the geothermal field where it replenishes the steam produced for power generation.
Unlike some other renewable power sources such as wind and solar, geothermal energy is dispatchable, meaning that it is both available whenever needed, and can quickly adjust output to match demand. According to the US Energy Information Administration (EIA), of all types of new electrical generation plants, geothermal generators have the highest capacity factor, a measure of how much power a facility actually generates as a percent of its maximum capacity. The EIA rates new geothermal plants as having a 92% capacity factor, higher than those of nuclear (90%), gas (87%), or coal (85%), and much higher than those of intermittent sources such as onshore wind (34%) or solar photovoltaic (25%). While the carrier medium for geothermal electricity (water) must be properly managed, the source of geothermal energy, the Earth's heat, will be available, for most intents and purposes, indefinitely. In 2008 the USDOE funded research in Enhanced Geothermal Systems (EGS) to learn more about the fracture systems in geothermal reservoirs and better predict the results of reservoir stimulation.
The underground hot water and steam used to generate geothermal power may contain chemicals that could pollute the air and water if released at the surface. Hydrogen sulfide, which is toxic in high concentrations, is sometimes found in geothermal systems. Newer methods of generating geothermal power separate the hot steam collected underground from the steam used to power turbines, and substantially reduce the risk of releasing air-polluting contaminants. The water mixed with the steam contains dissolved salts that can damage pipes and harm aquatic ecosystems. Some subsurface water associated with geothermal sources contain high concentrations of toxic elements such as boron, lead, and arsenic. Injection of water in enhanced geothermal systems may cause induced seismicity. Earthquakes at the Geysers geothermal field in California, the largest being Richter magnitude 4.6, have been linked to injected water. "Possible effects include scenery spoliation, drying out of hot springs, soil erosion, noise pollution, and chemical pollution of the atmosphere and of surface- and groundwater
originally posted by: Grimpachi
a reply to: Kester
Funding for renewables such as Geothermal and solar are around 300 million while subsidies and funding for fossil fuels are closer to a trillion.
analyses on the likely temperatures to be found
Expected temperatures at depths below the ground surface of 100, 200, 500 and 1000 m are 13, 16, 24 and 38 °C respectively.
Interesting point here. What are the chances of getting your hands on fossil fuel subsidies if you're an average guy with barely any savings?
Now look at the possibilities for getting a slice of the renewables cake. Hire a drilling rig and call yourself a ground source heat pump installer. Drill the holes short and you're doing even less work for your share of the funding.
Set yourself up as a solar panel installer and use the fakes that have a german unit at each end with chinese poor quality units in between. (Some chinese panels are now among the best. I'm not knocking all chinese panels.)
Or just do it all legit knowing a proportion of the money you're being paid has come from the public purse.
If you're a young person eager to enter the world of renewables you can't do better than training as a ground source heat pump troubleshooter. It's a bit like being Mystic Meg.
I'm sure someone somewhere has a ground source heat pump that really has worked and saved enough electricity to balance the pollution caused by the manufacture,installation and eventual responsible decommissioning of the entire system. I've only heard one bad story after another from GSHP users.
The fake green 'renewable' energy scam is sold through skilful advertising. Small independent systems are the way to go. No more bills. All the big renewable energy scams are financed by people who want you to pay them.
Geothermal energy produces about 13% of New Zealand's electricity supply. Most of New Zealand's installed geothermal generating capacity of about 750 MWe is situated in the Taupo Volcanic Zone
originally posted by: Kester
Looking for images of working geothermal projects I find Iceland, where steam comes out of the ground, and drawings. Anyone can produce illustrations that show what they want to happen. Reality will assert itself once drilling progresses.
The project’s apparent collapse comes a day after Swiss government officials permanently shut down a similar project in Basel, because of the damaging earthquakes it produced in 2006 and 2007.
Geothermal enthusiasts asserted that drilling miles into hard rock, as required by the technique, could be done quickly and economically with small improvements in existing methods, Professor Schrag said. “What we’ve discovered is that it’s harder to make those improvements than some people believed,” he added.