200 watts of power is equal to 16. 5 voltage output under ideal conditions (1kW/m 2 sunlight intensity, 25 o C temperature, and. . A 200-watt solar panel is a medium-sized photovoltaic panel capable of producing up to 200 watts of power per hour under optimal sunlight conditions. Each solar cell inside the panel absorbs sunlight and converts it into direct current (DC) electricity. In the next sections, you'll get: Real-world output (not STC fantasy) so you know your daily energy budget. Exact run-time examples for common 200W solar panel uses —laptops, routers, fans. . In terms of current, 12V-200W solar panels are usually rated at 8 to 10 Amps.