Is There a Justified Need for Renewable Energy?
People have been using the sun's power for thousands of years, but solar technology as we know it today has a more recent history:
Ancient Times:
Romans and Greeks used the sun to heat buildings and water
They designed homes to capture sunlight during winter
Modern Solar Development:
1839: French scientist Edmond Becquerel discovered the photovoltaic effect (how sunlight creates electricity)
1954: Bell Labs created the first modern solar cell that could power everyday electrical equipment
1970s: Solar panels started appearing on homes during the energy crisis
1980s-1990s: Solar technology improved but was still very expensive
2000s-Present:
- Prices dropped dramatically (about 90% cheaper than in 2000)
- More efficient panels were developed
- Many more homes started using solar power
- Government programs helped make solar more affordable
Today, millions of homes worldwide use solar panels, and the technology keeps getting better and cheaper. In fact, solar is now often cheaper than traditional electricity in many places.
