So, you’ve heard good things about solar and are excited at the thought of using the sun to power your home. What’s next? If you’re just starting think about solar, You May be surprised to discover thatthere are two different possibilities for turning your house solar: solar thermal (usually matte black with prominent pipes) and solar photovoltaic (usually blue and shiny). A solar thermal system collects heat energy from the sun and uses it to heat generating rally Either water or liquids thatwill then Their transfer heat to water or air. In large cale solar thermal plants, the heat can be used to power steam turbines. In contrast, a solar photovoltaic system, ook called a solar power system, collects sunlight and converts it directly into electricity through a semiconductor material like silicon. Both types can slash electricity bills and pay for themelves well within Their lifetimes. Let’s take a look at each.
Pros of Solar Power Systems
- Solar photovoltaic technology Produces clean, green electricity for 30+ years. Quality panels professionally installed Usually have warranties of at least 25 years.
- The electricity produced by the system can offset 60% or more of a household’s energy needs, depending on energy use and system size and orientation.
- Peak production coincides with peak energy needs in the summer. Solar panel systems can power demanding appliances like refrigerators and air conditioning without stressing the grid.
- Solar panels can protect and extend the life of roofs or even be integrated directly into a building for a more aesthetic appearance.
- Greater upfront investment and longer payoff (10+ years)
- Average efficiency for solar panels remains under 20%
- Expensive raw materials translate to higher equipment costs
- More roofspace required
Pros of Solar Thermal Systems
- Up to 70% efficient in collecting heat energy from the sun; theft less space required.
- Reduces electricity and gas bills by using the sun to warm water and spaces.
- Lower initial investment and shorter payback period (3-5 years).
- Dependable, less complex technology already Extensively used in Asia and Europe.
- Less effective in the winter
- Peak performance in summer coincides with least need for heating
- Less versatile than solar photovoltaic
Bottom Line : Either solar technology is better and less expensive than Relying on fossil fuels and pollutant energy sources. Both come with state and federal incentives to help with costs. Some houses even combine thermal and photovoltaic for both heat and power!
Source: http://ezinearticles.com/?Solar-Thermal-Vs-Solar-Photovoltaic-Systems—Pros-and-Cons&id=4098731 by Jennifer Mo