Nuclear+Rebuttal+link

Disadvantages of Geothermal: > Disadvantages of Solar Energy: -Does not work at night. -Can get very expensive to build stations for the pads. -Can be unreliable if you are not in a sunny area. -The cost of solar panels is high - It is obviously impossible to power your home with a solar array at night if you don’t have a system in which to store power. This means batteries at our present level of technology. So you will probably still need to draw electricity from the local utility grid. -The majority of photovoltaic panels are made from silicon and other metals that are potentially toxic like mercury, lead, and cadmium. This is the dirty secret of this “clean” technology. -Many solar panels and systems last from 15-30 years. -The cost of a solar system costs typically more than a heating/cooling utility in the house. So "saving money" costs money
 * 1) **Not Widespread Source of Energy** : Since, this type of energy is not widely used therefore the unavailability of equipment, staff, infrastructure, training pose hindrance to the installation of geothermal plants across the globe.
 * 2) **High Installation Costs** : To get geothermal energy, requires installation of power plants, to get steam from deep within the earth and this require huge one time investment and require to hire a certified installer and skilled staff needs to be recruited and relocated to plant location. Moreover, electricity towers, stations need to set up to move the power from geothermal plant to consumer.
 * 3) **Can Run Out Of Steam** : Geothermal sites can run out of steam over a period of time due to drop in temperature or if too much water is injected to cool the rocks and this may result huge loss for the companies which have invested heavily in these plants.
 * 4) **Suited To Particular Region** : It is only suitable for regions where temperature below the earth are quite low and can produce steam over a long period of time. For this great research is required which is done by the companies before setting up the plant.
 * 5) **May Release Harmful Gases** : Geothermal sites may contain some poisonous gases and they can escape deep within the earth, through the holes drilled by the constructors. http://www.conserve-energy-future.com/Advantages_Disadvantages_GeothermalEnergy.php

Disadvantages of Biomass -Explosive -Explodes at random times

Disadvantages of Hydrogen The lower energy consumption in this case means that these hydrogen generating systems could be even powered by wind turbines or solar panels, and with this the disadvantage of emitting carbon emissions would also be canceled. Also, the hydrogen produced during inexpensive or excess power production periods can be easily stored and later distributed to stationary fuel cell generators to supply electricity during peak demand periods. However, this technology has been so far completed only on small-scale units for residential use, and lot more researches is needed to make hydrogen production totally efficient from economic, as well as from ecological point of view. Based on the current researches it certainly looks like the main disadvantage of hydrogen as the clean fuel, namely the hydrogen production, is one obstacle that science should overcome in years to come.

Disadvantages of Natural Gas:  natural gas is a very flammable substance and is dangerous. they use non renewable resources such as fossil fuels, oil, coal, copper,diamonds, natural gas, iron ore, minerals, gold, silver, platinum,rocks, and many more. (that is one bad thing about natural gas we need to know about). the smoke from the burning natural gas is very harmful to the environment. natural gas is a nonrenewable energy source because when its all gone we can no longer use natural gas as a energy source because the resources will be scarce or unavailable.

Disadvantages of Hydroelectricity
The disadvantages of hydroelectric energy include: the high potential for extreme damage to the local ecosystem; the high cost of construction; the sheer size and scale of hydroelectric dams and the possibility of the potential devastation of a dam breaking. All of the problems associated with large scale hydro are themselves potentially very large due to the scale of the construction. The environmental impact of a poorly built dam cannot be understated; hydroelectric energy also has one of the highest rates of death per kW (due to a few accidents where dams breaking have taken many lives.)
 * 1. Hydropower dams disrupt the natural flow of rivers.**This will alter the river and riverside habitat.
 * 2. Impedes the natural flow of sediments.** Rivers naturally erode, carry, and deposit sediment. These processes are what shape the river, form meanders, pools, and riffles.

The river deposits its sediment load in the impoundment when the flow velocity slows and the particles settle out. Over time, sediment can fill in the impoundment. Eventually, the impoundment may become so shallow that the sediment must be removed by dredging or other means. The river downstream of the dam is “starved” for sediment because the sediment naturally flowing in the river has been trapped behind the dam. The water flowing through the outlet of the dam may be relatively clear, and carry little sediment.A third of the disadvantages of hydropower is... "Building a dam on a river has major implications for the biota found in the river system. Because fish and other biota cannot move past a dam, the dam effectively splits the river into separate ecological zones: the river above the dam and the river below the dam. Fish passages may be added to a dam to help fish move up and downstream, but they are not always effective. Although the free movement of fish can sustain a healthy fishery, a dam may be a barrier to the movement of unwanted invasive species. Water tends to warm more in an impoundment than in a free-flowing river, which may affect the types of fish found upstream, in, and downstream of the impoundment. Impounded and free-flowing river systems provide habitat for amphibians, reptiles, birds and mammals.
 * 3. Scour holes.** Water flowing over a dam can cause scour holes to form immediately below the dam. Scour holes may undercut the foundation of the dam threatening the integrity of the structure. In addition, the currents in scour holes present a hazard to swimmers.
 * 4. Obstacles to fish migration.** Here is another of the disadvantages of hydropower. According to the Water Resource Management practicum:
 * 5. Catastrophic Failure.** If dam breaks it would be a disaster and would kill many people.