Solar Energy

 

Germany goes solar

 

 

 

May 13, 2014: Germany Sets New Record,
Generating 74 Percent Of Power Needs
From Renewable Energy

 

 

 

Active solar heats air and water

 

 

Concentrating solar rays magnifies energy

Focusing solar energy on a single point
magnifies its strength

 

 

CSP techniques

     

The PS10 Solar Power Plant, is the world's first
commercial concentrating solar power tower operating
near Seville, in Andalusia, Spain.

 

 

Concentrating Solar Power (CSP) facilities on just 100 mi2
in Nevada could generate enough electricity for the entire
US economy

 

 

Photovoltaic cells generate electricity

 

A typical photovoltaic cell

 

Variations on PV technology

•Thin-film solar cells = PV materials are compressed into thin sheets
-Less efficient but cheaper
-Can be incorporated into roofing shingles, roads, etc.
•Net metering = the value of the power the consumer provides is subtracted from the monthly utility bill
-Producers of PV electricity can sell their power to a utility
•Feed-in tariffs pay producers more than the market price of power, so power producers turn a profit

 

Tesla Solar Roof

 

Solar power is fast growing

 

Solar energy will continue to grow

 

 

 

 

 

Solar energy offers many benefits

A 5-kilowatt PV system in a home in Fort Worth, Texas would provide half its power needs, save $680/year and prevent 5 tons of CO2 emissions/year

 

 

 

Cost is a drawback