There is growing interest in alternative energy sources due to limited fossil fuel reserves. Research estimates that at 2009 consumption rates, proven oil reserves would be depleted in 55 years, natural gas in 63 years, and coal in 119 years. While probable and undiscovered reserves may extend these timelines, renewable energy is seen as the long-term solution. Solar energy in particular holds promise as the sun is the most abundant energy source. Photovoltaic solar systems convert sunlight directly into electricity, with global PV capacity increasing from 40 GW in 2010 to 139 GW in 2013. New systems aim to improve solar energy efficiency through the use of sensors, motors and mirrors to optimally position and focus sunlight on solar panels.

2. Introduction
• There is a great deal of information and enthusiasm
today about the development and increased production
of our global energy needs from alternative energy
sources.
• Solar energy, wind power and moving water are all
traditional sources of alternative energy that are
making progress.

3. How long can we rely on Fossil
Fuels?

4.  We all know the harmful side effects of using fossil fuels.
Besides that, recent research says that we cannot rely on
them for long.
 In 2009 proved reserves were estimated as follows with that
year’s fuel consumption in mind:
• Oil: 46 years (depleted in 2055)
• Natural gas: 63 years (depleted in 2072)
• Coal: 119 years (depleted in 2128)
 Besides proven reserves there are still ‘probable’ and
‘discovered’ reserves. Therefore it’s possible that oil will last for
another 100 years or maybe even more. The same can be
said about gas and coal.
And after that?

5. The answer to the question is of course
Renewable Energy.

6. The sun is the most important source of
renewable energy available today. Scientists
and engineers today seek to utilize solar
radiation directly by converting it into useful
heat or electricity.
Solar Energy

7. A photovoltaic system (informally, PV system) is an
arrangement of components designed to supply usable
electric power for a variety of purposes, using
the Sun (or, less commonly, other light sources) as the
power source. Solar PV total global capacity increased
during 2010-2013 from 40 GW to 139 GW.
How do photovoltaic systems work?

8. Solar panels
A solar Park

9. How can we make this system more
efficient?

10. Solar Amplifier and Tracking
System
A project utilizing sensors and servo motors to build an
efficient solar energy capturing system

11. Basic Idea
The setup uses LDRs and servo motors to sense and
accurately position the solar panels so as to produce
maximum possible output. A mirror is used to amplify
the light source.

12. Basic Idea
The setup uses LDRs and servo motors to sense and
accurately position the solar panels so as to produce
maximum possible output. A mirror is used to amplify
the light source.

13. A solar park using mirrors to amplify light source