Solar PV has global potential, but performance ratio of solar PV plant decreases when ambient temperature is very high. Therefore, are there any rule of thumb or theory for considering a geographic location is more appropriate over solar PV?
Are there any Map/raster that shows high potential for for solar thermal over PV?
Weather conditions
A clear, bright day is the best weather condition for optimal solar panel output. On a clear, non-cloudy day the panels receive the maximum amount of light possible. As solar panels run off light and not heat, it does not have to be a particularly warm day for the panels to work well.
Wind and rain do not affect the output of solar panels and can actually help to keep them clean and free of debris. Cloudy days are the least optimal for producing solar power. However, even on very cloudy days your panels can still potentially produce up to a third of their maximum output.
Time of year
The length of daytime changes throughout the year in the UK. Our days are longer in the summer months and shorter during winter. The most optimal time for producing solar energy is the summer months, between June and August. In June, July and August, there is an average of 16 daylight hours each day in the UK. In April, May and September there are still on average 13-15 hours. Even in the shortest daylight months, December and January, the UK still has around 8 hours of light every day.
At the moment solar panels cannot store energy. This means that they can only power your house during the daylight hours, when they are able to instantly convert sunlight into electricity. There are solar batteries which store excess energy produced throughout the day for use at night. In the near future we may even be able to store solar power over the light summer months in order to benefit from it over winter time. Solar battery technology is still relatively new and untested. However, it is rapidly improving and the ideal of 24 hour solar power, 365 days a year, is not too distant a dream.
Type of panels
It used to be accepted that the most expensive, monocrystalline, type of solar panels were the most efficient. Recent developments have lead to monocrystalline and polycrystalline panels becoming very similar in both price and output. There is another, fastly growing, type of solar panel called ‘thin film’ panels. Thin film panels are thought to work better than traditional crystalline panels in cloudy conditions. Therefore, if you live in an area of the UK with traditionally low light conditions, it may be worth considering thin film. Thin film panels are a newer technology, and whilst they are showing some promising qualities, they are typically not yet as efficient as traditional panels.
Dear
The climate of India is best condition for solar power plants. Government of India doing well in this direction and lot of research conducted in India.
solar thermal need a maximum of heat from solar, for that sky mus be clear and temperature is higher
Solar thermal energy is harnessed optimally when temperature is high with great heat from sunlight however the output can still be very useful on cloudy days. In Nigeria, we have more sunlight during the dry season.
Solar energy can be exploited from the wind that is generated by sun in the atmosphere. Wind is more constant across the day, less constant across weeks.
The spread of windmills being erected in the world sems to indicate that wind is the best way of exploiting the sun energy.
PVT technology is now very advanced to have the advantages of both PV and thermal solar collector systems. Plenty of research articles are availabe in this direction. you may look at this one:
https://www.sciencedirect.com/science/article/pii/S0378778814002618
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