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.
How much do solar panels cost? The cost of a solar electricity system varies a lot based on whether tax credits or rebates are available to you. It's as cheap as free, where incentives pay for 100% of the cost of the system. On the other extreme, with no incentives and a higher-than average cost of install, a system might cost $53,000.