The source of Earth's solar power: The Sun. Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.
1 The average annual temperature in Vienna, Austria is a little cool at 9.8 degrees Celsius (49.7 degrees Fahrenheit). 2  Mean monthly temperatures vary by 21.5 C (38.7 F) which is a below moderate range.3  The range/ variation of diurnal mean temperatures is 7.3 C (13.2 F).verage Temperatures in Vienna, Austria. 1  The average annual temperature in Vienna, Austria is a little cool at 9.8 degrees Celsius (49.7 degrees Fahrenheit).
Innsbruck: Annual Weather Averages. July is the hottest month in Innsbruck with an average temperature of 19Â°C (65Â°F) and the coldest is January at -2Â°C (29Â°F) .The wettest month is June with an average of 130mm of rain.nnsbruck: Annual Weather Averages. July is the hottest month in Innsbruck with an average temperature of 19Â°C (65Â°F) and the coldest is January at -2Â°C (29Â°F) .