In response to the limits of finite energy resources, the only sustainable response to global warming is renewable energy. Among the available choices, nothing is more sustainable than energy from the sun. In addition, no harmful pollution, CO2, vibration, or noise is produced when generating solar energy.
Today, solar cells are the main source of energy in parts of the world without conventional forms of electrical generation, providing power to some 160 million people. Impact on the environment is minimal, yet people can enjoy the comforts of life that electricity brings.
Renewable energies such as hydroelectric, biomass, wind power, geo-thermal and solar power will account for more than 20% of the total global electricity supply in 2010. This figure is projected to exceed 80%, with the rate of solar energy reaching to 25%, in just 30 years.
Using the sun's rays to generate electricity produces a very clean form of energy, with practically no impact on the environment. With the adoption of a 10kW solar electric system, the amount of electricity produced is estimated to be about 10,000kWh per year. This is equivalent to the reduction of about 2,270 liters of crude oil per year. Equally, the reduction of CO2 output is equivalent to the CO2 uptake capacity of about 224 cedar trees (3,145 kg).
Source: Calculation by Sharp Corporation based on the reports published by New Energy and Industrial Technology Development Organization (NEDO) and Japan Photovoltaic Energy Association (JPEA).