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Tablerock Land Services is firmly committed to building a sustainable future for coming generations. We are continually searching out new opportunities to provide Right of Way and Engineering/Construction services to companies as committed to providing energy from renewable sources as we are. Tablerock Land strives to stay on the cutting edge of the industry, which includes finding and providing new sources of energy in order to build a stronger and more sustainable energy economy.
Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished). About 16% of global final energy consumption comes from renewables, with 10% coming from traditional biomass, which is mainly used for heating, and 3.4% from hydroelectricity. New renewables (small hydro, modern biomass, wind, solar, geothermal, and biofuels) accounted for another 2.8% and are growing very rapidly. The share of renewables in electricity generation is around 19%, with 16% of global electricity coming from hydroelectricity and 3% from new renewables.
Wind power is growing at the rate of 30% annually, with a worldwide installed capacity of 198 gigawatts (GW) in 2010, and is widely used in Europe, Asia, and the United States. Solar thermal power stations operate in the USA and Spain, and the largest of these is the 354 megawatt (MW) SEGS power plant in the Mojave Desert. The world’s largest geothermal power installation is The Geysers in California, with a rated capacity of 750 MW. Brazil has one of the largest renewable energy programs in the world, involving production of ethanol fuel from sugar cane, and ethanol now provides 18% of the country’s automotive fuel. Ethanol fuel is also widely available in the USA.
Globally, the long-term technical potential of wind energy is believed to be five times total current global energy production, or 40 times current electricity demand.
This could require wind turbines to be installed over large areas, particularly in areas of higher wind resources.
Offshore resources experience mean wind speeds of ~90% greater than that of land, so offshore resources could contribute substantially more energy.
Energy in water can be harnessed and used. Since water is about 800 times denser than air, even a slow flowing stream of water, or moderate sea swell, can yield considerable amounts of energy.
Solar energy is the energy derived from the sun through the form of solar radiation. Solar powered electrical generation relies on photovoltaics and heat engines.
A partial list of other solar applications includes space heating and cooling through solar architecture, daylighting, solar hot water, solar cooking, and high temperature process heat for industrial purposes.
Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy.
Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy.
Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.
Biomass (plant material) is a renewable energy source because the energy it contains comes from the sun. Through the process of photosynthesis, plants capture the sun’s energy.
When the plants are burnt, they release the sun’s energy they contain.
In this way, biomass functions as a sort of natural battery for storing solar energy. As long as biomass is produced sustainably, with only as much used as is grown, the battery will last indefinitely.
Biofuels include a wide range of fuels which are derived from biomass. The term covers solid biomass, liquid fuels and various biogases. Liquid biofuels include bioalcohols, such as bioethanol, and oils, such as biodiesel. Gaseous biofuels include biogas, landfill gas and synthetic gas.
Bioethanol is an alcohol made by fermenting the sugar components of plant materials and it is made mostly from sugar and starch crops. With advanced technology being developed, cellulosic biomass, such as trees and grasses, are also used as feedstocks for ethanol production. Ethanol can be used as a fuel for vehicles in its pure form, but it is usually used as a gasoline additive to increase octane and improve vehicle emissions. Bioethanol is widely used in the USA and in Brazil.
Biodiesel is made from vegetable oils, animal fats or recycled greases. Biodiesel can be used as a fuel for vehicles in its pure form, but it is usually used as a diesel additive to reduce levels of particulates, carbon monoxide, and hydrocarbons from diesel-powered vehicles. Biodiesel is produced from oils or fats using transesterification and is the most common biofuel in Europe.
Biofuels provided 2.7% of the world’s transport fuel in 2010.
Geothermal energy is energy obtained by tapping the heat of the earth itself, both from kilometers deep into the Earth’s crust in volcanically active locations of the globe or from shallow depths, as in geothermal heat pumps in most locations of the planet.
Renewable Energy References
- ^ REN21 (2011). “Renewables 2011: Global Status Report”. p. 17.
- ^ REN21 (2011). “Renewables 2011: Global Status Report”. p. 18.
- ^ Lars Kroldrup. Gains in Global Wind Capacity Reported Green Inc., February 15, 2010.
- ^ REN21 (2011). p. 15.
- ^ Global wind energy markets continue to boom – 2006 another record year (PDF)
- ^ Solar Trough Power Plants (PDF).
- ^ America and Brazil Intersect on Ethanol
- ^ “Offshore stations experience mean wind speeds at 80 m that are 90% greater than over land on average. Evaluation of global wind power
“Overall, the researchers calculated winds at 80 meters [300 feet] traveled over the ocean at approximately 8.6 meters per second and at nearly 4.5 meters per second over land [20 and 10 miles per hour, respectively].” Global Wind Map Shows Best Wind Farm Locations. Retrieved January 30, 2006.
- ^ Richard Shelquist (18 October 2005). “Density Altitude Calculator“. Retrieved 2007-09-17.
- ^ “Water Density Calculator“. CSG, Computer Support Group, Inc. and CSGNetwork.Com. Copyright© 1973–2007. Retrieved 2007-09-17.
- ^ a b Union of Concerned Scientists. How Biomass Energy Works
- ^ Demirbas, A. . (2009). “Political, economic and environmental impacts of biofuels: A review”. Applied Energy 86: S108–S117.
- ^ a b c d e f REN21 (2011). “Renewables 2011: Global Status Report“. p. 13-14.