Hermann Diels popularized the term pre-socratic in Die Fragmente der Vorsokratiker (The Fragments of the Pre-Socratics) in 1903. However, the term pre-Sokratic was in use as early as George Grote's Plato and the Other Companions of Sokrates in 1865.
The cost of a solar panel today is around $3 per watt, and the extra cost of installation brings costs up to $5- $6 per watt. Note: Installation costs for PV systems include both labor and the electronics needed to tie the solar array into your existing electrical system.
Cost of Solar Panels. The cost of solar panels involves more than just the sticker price on the panels. In addition to the material, you will need to pay for installation and maintenance. Solar energy costs approximately $4 to $9 per watt, with the average price at $7 per watt. The size of your home doesn't matter. You will need to look at your monthly energy consumption to determine the amount you need.