No source of energy is without risks, including wind. Here's an excerpt from a San Francisco Chronicle report:
The long hot summers of the San Joaquin Valley suck great tsunamis of cool coastal air through the Altamont Pass, producing winds so powerful that a person can lean nearly 45 degrees without falling down.
Such awesome force gave birth in the early 1980s to the world's largest collection of wind turbines, pioneers in what is now America's fastest-growing form of renewable energy and an increasingly important weapon in the battle against global warming.
But the Altamont Pass Wind Resource Area is also a symbol of the wind industry's biggest stain - the killings of thousands of birds, including majestic golden eagles, by turbines. The result has been a wrenching civil war among those who are otherwise united in the struggle to save the planet and its creatures.
It's been nearly a year since a controversial legal settlement was forged among wildlife groups, wind companies and Alameda County regulators. That agreement, opposed by some parties to the dispute, promised to reduce deaths of golden eagles and three other raptor species by 50 percent in three years and called for the shutdown or relocation of the 300 or so most lethal of the approximately 5,000 windmills at Altamont.
http://www.sfgate.com/bayarea/article/THE-DEADLY-TOLL-OF-WIND-POWER-3299197.php
Although it does burn much cleaner than coal and oil, the process of extraction of shale gas in Pakistan, or anywhere else, is not without risks, particularly risks to the environment. In the United States, there have been many reports of ground water contamination from chemicals used to fracture rocks, as well as high levels of methane in water wells. In the absence of tight regulations and close monitoring, such pollution of ground water could spell disaster for humans and agriculture.
Given Pakistan's heavy dependence on natural gas for energy and as feedstock for industries such as fertilizer, fiber and plastics, it's important to pursue shale gas fields development under reasonably tight environmental regulations to minimize risks to the ground water resources.
Haq's Musings: Pakistan's Vast Shale Gas Deposits
Shale gas extraction uses a lot less water than other forms of energy production and the water can be reused in producing more gas.
Here's a comparison:
One MMBtu, or 1 million British thermal units, a standard measurement for the energy content of fuels, was produced from these energy sources using the following amounts of water:
Deep shale natural gas 0.60-5.80 gallons
Nuclear (uranium ready to use in a power plant) 8-14 gallons
Conventional oil 8-20 gallons
Synfuel-coal gasification 11-26 gallons
Coal (ready to use in a power plant) 13-32 gallons
Oil shale 22-56 gallons
Tar sands/oil sands 27-68 gallons
Fuel ethanol from corn 2,510-29,100 gallons
Biodiesel from soy 14,000-75,000 gallons
Deep shale gas drilling uses least amount of water