Integrated Science


Solar Energy

Definition Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics convert light into electric current...

Energy Efficiency

What is energy efficiency? Energy efficiency is “using less energy to provide the same service”. There are other definitions, but this is a good operational one. The best way to understand this idea is through examples: When you replace a single pane window in your house with an energy-efficient one,...

Natural Gas vs Coal

Natural Gas vs Coal: Undoubtedly, high efficiency natural gas-fired power stations can produce up to 70% lower greenhouse gas emissions than existing brown coal-fired generators, and less than half the greenhouse gas emissions of the latest technology black coal-fired power stations. Notice the distinction between black and brown coal, however,...

Geothermal Energy & Plants

Introduction Deep inside the Earth lies the top layer of the mantle consisting of hot liquid rock called magma. Underground, water can be heated up to boiling temperatures and turn into steam through the heat emitted by these rocks. Harnessing the thermal energy fomr hot water and steam, we can...