what grass grows in winter? I hope not to cut my lawn till next march!
Ah, so your lawn dies in winter?
And with regards temperature:
Solar panels do not need direct sunlight in which to work efficiently. They can work just as efficiently when daylight only hits them. Yes they do lose some power on a grey overcast day, but they will still be producing energy as it is daylight outside.
We do tend to think that solar panels are going to work very well on a blistering hot summer day. Surprisingly this is actually not the case. Solar panels will lose efficiency in temperatures above 30 degrees. The cooler weather actually suits them better.
As long as they have daylight they can remain very efficient at producing energy. Solar panels are also built to withstand a British winter and are very hard wearing meaning they will not be damaged by cold temperatures, wind, rain, ice or snow.
And regards Snow:
Again, you would think that when it is snowing the solar panels would not work efficiently. Panels will possibly lose some power generating capacity when the snow is actually falling as it tends to be very cloudy at this time. When the storm has cleared and you are left with snow on the ground this can actually encourage the panels to work better.
The added reflection coming from the snow on the ground will cause more light to fall on the panels, especially when the sun comes out onto the snow. Snow cover over the panels is usually not a problem. Thin layers of snow cause no problems at all as the light can still get through. Solar panels are frequently assembled onto sloping roofs meaning the snow will slide of the panels much faster than it will of the roof.
The snow will also slide of quickly due to the fact that the panels retain some heat inside and this will cause the snow to fall off. In the case of very extreme snowfall it is possible that the panels shut off altogether and do not produce any electricity. However, the snow will soon go from the panels on its own or if it is safe to do so you may remove the snow by hand. All in all solar panels work very well in cold weather conditions.
People thinking that solar isn't practical haven't been following the trends:
The sun could be the world's largest source of electricity by 2050, according to a report issued on Monday by the International Energy Agency (IEA).
According to IEA, solar photovoltaic (PV) systems could generate up to 16% of the world's electricity — overtaking fossil fuels, wind, hydro, and nuclear energy — in a little more than three decades.
In photovoltaic cells, silicon electrons absorb energy from light rays, which is converted into electricity. These are different from thermal solar panels, which generate energy by heating up water.
Read more: http://www.businessinsider.com/sola...ectricity-source-by-2050-2014-9#ixzz3FpgZ42ZM
“Negative pricing” moves, as they are known, are not uncommon. But they are only supposed to happen at night, when most of the population is mostly asleep, demand is down, and operators of coal fired generators are reluctant to switch off. So they pay others to pick up their output.
That's not supposed to happen at lunchtime. Daytime prices are supposed to reflect higher demand, when people are awake, office building are in use, factories are in production. That's when fossil fuel generators would normally be making most of their money.
The influx of rooftop solar has turned this model on its head. There is 1,100MW of it on more than 350,000 buildings in Queensland alone (3,400MW on 1.2m buildings across the country). It is producing electricity just at the time that coal generators used to make hay (while the sun shines).
The impact has been so profound, and wholesale prices pushed down so low, that few coal generators in Australia made a profit last year. Hardly any are making a profit this year. State-owned generators like Stanwell are specifically blaming rooftop solar.
The truly scary prospect for coal generators, however, is that this equation will become economically viable in the big cities. Investment bank UBS says this could happen as early as 2018.
-And that was before the Cambridge breakthrough, so the pace will be quicker and price cheaper once those panels go into mass production.