Renewable Energy resources are constantly replenished natural resources that will never be exhausted. Their use generally has a much lower environmental impact than that of conventional fuels that’s why technologies which utilizes them are often called “Green”. They are derived from various natural processes such as the sun’s electromagnetic radiation, tides or heat generation within the earth. Some of which includes; sunlight, wind, biomass, earth’s internal heat, water, etc.
While these forms of energy are both free and practically infinite, the equipments needed to collect, process and transport the energy to the users are neither free nor infinite. Initial investments (capital cost) are generally higher than that of fossil-based and nuclear energy but have very low operational and maintenance cost
This energy produced by the sun in the form of heat and light, captured through solar panels and converted to solar electricity using photovoltaic (PV) technology (solar cells)
Solar cells are made of the strong semi-conductor, Silicon. As sunlight strikes the silicon cells, the panels generate electric current. These are wired together forming solar panels & wired to a circuit. Multiple cells are needed to generate sufficient electricity, ie; solar panels. Several connected solar modules form a PV Array. This is the basic framework model for producing electricity. PV cells are easy to maintain.
- Clean energy source
- Steady pricing on energy
- Renewable and Sustainable
- Low maintenance and associated costs
- Longer life span & no environmental effect
- High initial cost
- Large area for setup
- Expensive storage
The process by which wind is used to generate electricity via Wind Turbines. These convert the energy in wind to electricity by rotating propeller-like blades around a rotor. The rotor turns the drive shaft, which turns an electric generator. Three key factors that affect the amount of energy a turbine can harness from the wind are; wind speed, air density and swept area. Wind is caused by the uneven heating of the atmosphere by the sun, variations in the earth’s surface and rotation of the earth. Mountains, bodies of water and vegetation all influence wind flow patterns.
- Clean air
- Free fuel & price stability
- Conserves and keeps water clean
- – Help generate energy in remote locations such as mountain communities or countryside’s
- A variable resource
- Turbines might cause noise pollution
- Turbine blades could damage local wildlife (birds)