Wholesale and mass production can make devices that produce solar power cheaper, but this cannot finalize and guarantee the price for solar power in the future. Increasing the effectiveness of these products is a must. You can browse this site to check the efficiency of solar modules has increased significantly or not.
The current panel has an average efficiency of 20%, while its value is much lower in the past. Research for the highest efficiency now reaches 40%, although this has not been implemented in practice. This percentage will decrease in the future.
Although the highest efficiency of PV inverters today has reached 96.5% (microinverters) and 98.5% (commercial inverters), it is hoped that more efficient inverters will be produced in the coming years. More electricity will leak with more efficient products. If electricity becomes more, it becomes cheaper.
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Solar power comes from sunlight. Therefore, it is far better if more solar power plants are built in areas where sunlight is abundant and more families around the world can use solar energy and build small solar power plants at home.
Areas that are rich in the sunlight like deserts and equators need to be explored further, and this trend has begun because many people ask why we don't build solar power plants in this area.
Aside from several human causes, the main reason is technology. Future technology will no doubt overcome such problems and support our idea of building power plants in these locations.