The Van region has a large Kurdish population, and the Van cat has been referred to as the Kurdish cat or Kurdish Van cat, and made a symbol of Kurdistan in Kurdish nationalist circles.
Each cubic meter (m 3) of biogas contains the equivalent of 6 kWh of calorific energy. However, when we convert biogas to electricity, in a biogas powered electric generator, we get about 2 kWh of useable electricity, the rest turns into heat which can also be used for heating applications. 2 kWh is enough energy to power a 100 W light bulb for 20 hours or a 2000W hair dryer for 1 hour.
The U.S. Energy Information Administration (EIA) estimates that an additional 19 billion kWh (or about 0.02 trillion kWh) of electricity generation was from small-scale solar photovoltaic systems in 2016.3. Major energy sources and percent shares of U.S. electricity generation at utility-scale facilities in 20161. 1  Natural gas = 33.8%. 2  Coal = 30.4%. 3  Nuclear = 19.7%. 4  Renewables (total) = 14.9%. 5  Petroleum = 0.6%. 6  Other gases = 0.3%. 7  Other nonrenewable sources = 0.3%. 8  Pumped storage hydroelectricity = -0.2%4.