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.
Last updated August 14, 2013 by Mathias Aarre Maehlum. The total costs of a typical solar panel system of 5kW (15 â 25 solar panels), is typically somewhere around $30,000. According to Lawrence Berkley National Laboratory (LBNL), average cost of labor is $0.59/W â about 10% of total system costs ($6.19/W).