Solar energy is radiant light and heat from the sun that is harnessed using a range of ever evolving technologies such as solar heating photovoltaics solar thermal energy solar architecture molten salt power plants and artificial photosynthesis.
How have solar panels developed over time.
The cost of solar energy has plunged in recent years.
Cost of solar panels over time.
Solar panel efficiency over time.
It is not a long time ago.
According to the national renewable energy labs the installed cost of solar energy systems has fallen each year by an average of 6 to 8 percent.
Solar power technology has been around for over 150 years but the technology is still developing faster than ever.
Our timeline below highlights some of the most momentous.
Dependency on foreign energy resources.
In the 1970s an oil shortage brought awareness of u s.
The very first solar cells invented in the 1800s were less than one percent efficient not nearly enough to make them a useful energy source.
In 1956 solar panels cost roughly 300 per watt.
Solar panels are getting more efficient batteries and inverters are becoming smarter and cheaper and the solar options for homeowners have never been more diverse.
The solar industry today looks very different.
Because you will likely have many options to choose.
The falling cost of solar electricity.
In each edition i have had to rewrite significant sections of the book in order to keep up with the rapid pace of change.
By 1975 that figure had dropped to just over 100 a watt.
Cost of solar over time prices for solar panels have dropped substantially over the past few decades leading to a surge in consumer demand that has produced more than one million u s.
As we enter an important new era in solar power s history it s more important than ever to remember just how far solar power has come.
Solar power has undoubtedly developed in leaps and bounds from nothing more than a futuristic sci fi concept to not only a viable energy source but australia s preferred energy source.
It is an essential source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending.
A tale of falling prices.
I wrote the first edition of my solar electricity handbook early in 2009.
There are a number of mapping services that have been developed by seto awardees that will help you determine if your roof is suitable for solar and can even provide you with quotes from pre screened solar providers in your area.
Solar panels as a viable energy alternative.
In addition to those resources an internet search can help you find local companies that install solar panels.
This is largely due to the drop in solar panel costs which plummeted 60 in 18 months starting in early.
Over a decade ago in 2009 the cost of a solar panel installation was 8 50 per watt.
Installations as of early 2016.