The energy we get that can be replaced repeatedly is called renewable energy
. Two illustrations of this can be wind and solar power. Devices such as wind turbines and solar PV panels are important in powering these renewable energy systems.
At present time, fossil fuels like coal, oil and natural gas are the global reserves for our energy demands. Fossil fuels are non-renewable resources. Their supply on earth is limited and we are facing the likely thought that these natural resources will run out in the future. Add to that, greenhouse emissions are being released as by-products of fossil fuels and become a great aspect in global warming.
This is why renewable energy sources can be an an important factor in the present environmental crises. We are more actively discovering ways to lessen or even entirely eliminate our carbon footprint on our planet. To supply energy, more countries have started to introduce wind turbines and solar panel systems.
Wind Energy
People from long ago started using mechanical means like windmills to pump water from water sources and even crush grains. The propellers of wind turbines are moved by great gusts of wind enabling the turbines to generate electricity substantial enough to power small towns. Areas that have strong winds are ideal places to (put wind turbines such as coastal areas, atop hills and on open fields.}
Places that have wind farms can also provide electricity to national electric grids to add to the current power supply from electric companies. Wind turbines may not be used in small-scale settings, unlike solar PV panels used for homes, because of its size.
Solar Energy
Since ancient times, the sun was used to supply the heat needed to sustain life on earth. Only until recently has its complete potential been uncovered. Nowadays, a solar panel can provide electricity for a small household. Solar PV or solar photovoltaic specializes in using the suns rays and converts it into useable electricity.
It is becoming widely renown to use solar PV systems in homes and offices to save on electricity bills. People who choose to live a greener lifestyle are now using solar energy that does not emit harmful greenhouse gases.
You might find more useful and informative resource material on solar energy in the solar panel information site. These times call for more practical angles to address current issues.