7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 1/11

Turning The Future GreenMr. M. Mabhegedhe

Lecturer: Biological Sciences

Gary Magadzire School of Agriculture & Natural SciencesDepartment of Physics, Geo & Environmental Science

E-mail: mmabhegedhe@gmail.com

Mobile: +263 775 295 641

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 2/11

“Energy is the most valuable commodity of

modern society; it is the engine that drives

our civilization”.

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 3/11

•   Global energy demand is rising.•   Current energy requirements met using fossil fuels.

•  Fossil fuels are non-renewable and unsustainable

& increase energy security risk.

•   Over-reliance on fossil fuels also leads to high

energy prices.

•   Burning fossil fuels release greenhouse gases

(GHGs) into the atmosphere .•  GHGs trap the   sun’s  radiation in the atmosphere

leading to global warming.

Energy Security & Climate Change

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 4/11

Effects of Global Warming

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 5/11

Green Energy Technologies

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 6/11

•   Convert light energy from

the sun using solar cells

into electrical output.

•  Solar products include:

 ordinary solar panels  solar cookers

 solar geysers

 solar roofing tiles

 solar window panels

 solar phone chargers

 solar lighting systems

 solar powered traffic lights

Solar Energy

Integrated solar tiles installed by Solar Century

on a development in Milton Keynes by English

partnership and Bloor homes

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 7/11

•   Convert kinetic energy from the wind using wind

turbines into electrical output.

•  Wind products include:

 wind farms for electricity generation

 wind powered water pumps for wells / boreholes

Wind Energy

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 8/11

•   Kinetic energy of water rotates turbines whichgenerate electric energy.

•  Under normal conditions, hydropower accounts for 

50% of  Zimbabwe’s national electricity output.

Hydroelectric Energy

The Kariba Hydropower 

Station is  Zimbabwe’s mainhydroelectric power plant.

It has a power generation

capacity of 750 megawatts

of electricity.

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 9/11

Bio Energy

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 10/11

• Energy innovation is essential, it is the first importantstep in the right direction.

•  However, innovation if not supported, is insufficient to

guarantee us a sustainable energy future.

•  Many other inputs must be coordinated if we are tosuccessfully address our energy challenges.

•   There is need to create the right environment for 

innovation through:

 supporting R&D initiatives (research funding)

 supportive policy framework (renewable energy policy)

 developing competent human resources (training)

  infrastructure development

Green Energy Innovation – The Key?

7/24/2019 Turning the Future Green

http://slidepdf.com/reader/full/turning-the-future-green 11/11