The 2000-watt solar lamp has how bright.

Very bright. The brightness can be within a few meters, and you can read and write. When the weather is clear, the brightness is enough. A 2000-watt lamp without direct current will automatically adjust its brightness when it is on, and money will automatically adjust its brightness. It can also make ordinary farmhouses or villa courtyards very bright. Anyway, you can see the words in the book and the fine print in the newspaper.