solar panel, definition of

An ecosystem is a natural unit consisting of all plants, animals and micro-organisms in an area functioning together with all the non-living physical factors of the environment.

Wikipedia Entry

Note: Just be clear, an ecosystem by definition does include 'us' and what we do, we all inhabit the same set of systems. Therefore be careful of ecosystem analysis's done without consideration of what impact (both in the good and bad sense) humans have made. There are very few ecosystems that we do not engage with over the longer term.

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Solar Panel Efficiency is a percentage measure of how Solar Energy from the Sun hitting a solar panel is ideally converted into useful electrical power. This is often given assuming perfect conditions; i.e. no shade, maximum sun and cool. In practice the actual rate of conversion can be somewhat different due to:

• Shading - even partial shading can have a dramatic effect on the energy produced.
• Heat - the hotter a solar panel becomes the less efficient it is at converting solar energy into electrical energy.
• Sun Strength - akin to shading, but if the Sun is behind clouds or low in the sky you will get dramatically less power.
  

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