14 Responses

1. Energy 101: Geothermal Energy http://buff.ly/1nTvBSe

2. Energy 101: Geothermal Energy http://buff.ly/1nTvBSe

3. Energy 101: Geothermal Energy http://buff.ly/1nTvBSe

5. Energy 101: Geothermal Energy http://buff.ly/1nTvBSe

6. Energy 101: Geothermal Energy http://buff.ly/1nTvBSe

7. the future energy will be able to survive with this… great!!!

8. Energy 101: Geothermal Energy http://buff.ly/1nTvBSe

9. I am not sure that geothermal is cheaper than coal. But of course it is
   clean energy.

10. GEOTHERMAL ENERGY is thermal energy generated and stored in the Earth.
    Thermal energy is the energy that determines the temperature of matter. The
    Geothermal energy of the Earth’s crust originates from the original
    formation of the planet (20%) and from radioactive decay of minerals
    (80%).The geothermal gradient, which is the difference in temperature
    between the core of the planet and its surface, drives a continuous
    conduction of thermal energy in the form of heat from the core to the
    surface. The adjective geothermal originates from the Greek roots γη (ge),
    meaning earth, and θερμος (thermos), meaning hot.

    At the core of the Earth, thermal energy is created by radioactive decay
    and temperatures may reach over 5000 degrees Celsius (9,000 degrees
    Fahrenheit). Heat conducts from the core to surrounding cooler rock. The
    high temperature and pressure cause some rock to melt, creating magma
    convection upward since it is lighter than the solid rock. The magma heats
    rock and water in the crust, sometimes up to 370 degrees Celsius (700
    degrees Fahrenheit).

    From hot springs, geothermal energy has been used for bathing since
    Paleolithic times and for space heating since ancient Roman times, but it
    is now better known for electricity generation. Worldwide, about 10,715
    megawatts (MW) of geothermal power is online in 24 countries. An additional
    28 gigawatts of direct geothermal heating capacity is installed for
    district heating, space heating, spas, industrial processes, desalination
    and agricultural applications.

    Geothermal power is cost effective, reliable, sustainable, and
    environmentally friendly, but has historically been limited to areas near
    tectonic plate boundaries. Recent technological advances have dramatically
    expanded the range and size of viable resources, especially for
    applications such as home heating, opening a potential for widespread
    exploitation. Geothermal wells release greenhouse gases trapped deep within
    the earth, but these emissions are much lower per energy unit than those of
    fossil fuels. As a result, geothermal power has the potential to help
    mitigate global warming if widely deployed in place of fossil fuels.

    The Earth’s geothermal resources are theoretically more than adequate to
    supply humanity’s energy needs, but only a very small fraction may be
    profitably exploited. Drilling and exploration for deep resources is very
    expensive.Forecasts for the future of geothermal power depend on
    assumptions about technology, energy prices, subsidies, and interest rates.
    Polls[by whom?] show that customers would be willing to pay a little more
    for a renewable energy source like geothermal. But as a result of
    government assisted research and industry experience, the cost of
    generating geothermal power has decreased by 25% over the past two decades.
    In 2001, geothermal energy cost between two and ten cents per kwh.

11. A Simple Video on Geothermal Energy

12. Shallow geothermal energy under your feet can be your own utility. Shallow
    geothermal energy is not hot rocks as the video shows. Shallow geothermal
    called geothermal (ground source) heat pump systems (GHPS) uses earth
    between 40 and 75 degrees less than body temperature to heat, cool and
    provide hot water to your home or business. Not hot rocks generating
    steam. Now if you first put in a GHPS which gives you 4 units of free
    energy from the shallow crust of the earth under your feet and use only one
    unit of energy from the electrical grid you only need half as many solar
    panels to achieve net-zero for a home. The utility company is the bank
    where you put extra electrical power when your home generates it and then
    buy extra electrical power when your home needs it in the summer or
    winter….in some cases your home is net-zero, in some homes you produced a
    surplus electrical power and in others you must pay for extra electrical
    power consumed.

    At least with a GHPS you save the cost of solar panels and provide 24/7/365
    days of saving 30-70% energy cost, plus a quiet system which sounds like a
    refrigerator running, the lowest CO2 emissions of all systems, no outside
    compressor and fan making noise, no flame, no flue, no odors, and no danger
    of fire or fumes and a long life of 24 years. A ground loop is a home
    owner’s free utility to save half your energy bill and is found all over
    the earth surface from hot to cold areas.

    An EPA study of energy efficiency concluded geothermal energy is the most
    environmentally friendly heating/cooling system. The United States National
    Renewable Energy Laboratory (NREL) concluded that geothermal energy is more
    efficient and cost-effective compared with conventional residential
    systems. Available everywhere in the United States, geothermal energy can
    be found underground virtually anywhere starting at 5’ underground. GHPS
    cost savings can be increased by geothermal energy incentives, available
    from federal, state, local, and utility sources which includes a 30% tax
    credit like solar and wind.

    A GHPS requires less electrical power to operate and uses the free thermal
    energy under your feet which is between 40 and 75 degrees not hot rocks.
    The HDPE pipe used in GHP system is made from natural gas the same as
    natural gas lines. GSHP systems work for 24 years as compared to a
    conventional system which works for maybe 16 years before it must be
    replaced. Why? All components are in the building and not outside. I have a
    6,000 sf new home built in 2010 that has 2 ton, 3 ton and 4 ton Heat Pumps
    and cost on the average of $150 per month for electricity…lights,
    heating, cooling, cooking, hot water…I know it works. A conventional
    system would have cost me $30,000, but with the tax credit and utility
    incentives the cost was $29,800 for the GHP system in a big home. Own your
    own utility by installing a GHPS using the energy under your feet.
    

13. An excellent video on the one clean, dependable renewable energy.

    Well done D of E!

14. Does Northern California have the water resources for that to be
    sustainable? Isn’t solar with energy storage, wind and even Tidal (which is
    consistent can be put much closer to shore than of shore wind and US also
    smaller with greater energy efficiency) Better options going Forward.