About ten years ago, I had the opportunity to attend a solar energy seminar. I remember during the conference a Japanese company claimed the highest conversion rate for solar thin films at 18%. As the same year, I visited a solar panel factory. The factory owner said exactly what he think: to raise the conversion rate by a few percentage points in a few years, they had to sale as soon as possible to make the company operation, even if it was only at a low conversion rate, and these were changed in five or six years. They have to active marketing and consider their high costs and old equipment being obsolete quickly.

Today I safari by google, the conversion efficiency of silicon solar energy will be around 30% by 2022. I think this might be a good device for use in non-distributed and non-covered power areas.

A decade ago, government policy was for companies to install solar panels on rooftops, convert electricity from DC to AC, and sell it to power companies. At the time, we received an offer from a solar panel company. But we didn't sign the contract.

Is a 30% conversion rate high? I have no