Solar power is a form of energy harnessed from the power and heat of the sun’s rays. It is renewable, and therefore a “green” source of energy.
Solar Power a “Greener” Option!
Just like wind power, solar power is a virtually unlimited and inexhaustible resource (unlike power produced from expendable fossil fuels). As technologies improve and the materials used in PV panels become “greener,” the carbon footprint of solar power becomes smaller and smaller and the technique becomes more accessible to the masses.
Did You Know?
- Every hour, the sun beats down with enough power to provide global energy for an entire year.
- It takes an average of eight minutes for energy to travel from the sun to the Earth.
- Scientists have used solar energy to power spaceships since 1958.
- Most solar panels used today have an average life expectancy of between 20-40 years.
Facts at a Glance
Solar energy is a completely free source of energy and it is found in abundance. Though the sun is 90 million miles from the earth, it takes less than 10 minutes for light to travel from that much of distance.
Solar energy which comprises of radiant heat and light from the sun can be harnessed with some modern technology like photo-voltaic, solar heating, artificial photosynthesis, solar architecture and solar thermal electricity.
The solar technology can be distinguished into active and passive. Photovoltaic panels and solar thermal collectors which harness solar energy are examples of active solar technology. Passive technology includes constructing rooms to improve air circulation, orienting space to favorably use sunlight.