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solar power
Solar power is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV), indirectly using concentrated solar power, or a combination. Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaic cells convert light into an electric current using the photovoltaic effect.
Photovoltaics were initially solely used as a source of electricity for small and medium-sized applications, from the calculator powered by a single solar cell to remote homes powered by an off-grid rooftop PV system. Commercial concentrated solar power plants were first developed in the 1980s. The 392 MW Ivanpah installation is the largest concentrating solar power plant in the world, located in the Mojave Desert of California.
As the cost of solar electricity has fallen, the number of grid-connected solar PV systems has grown into the millions and utility-scale solar power stations with hundreds of megawatts are being built. Solar PV is rapidly becoming an inexpensive, low-carbon technology to harness renewable energy from the Sun. The current largest photovoltaic power station in the world is the 850 MW Longyangxia Dam Solar Park, in Qinghai, China.
The International Energy Agency projected in 2014 that under its "high renewables" scenario, by 2050, solar photovoltaics and concentrated solar power would contribute about 16 and 11 percent, respectively, of the worldwide electricity consumption, and solar would be the world's largest source of electricity. Most solar installations would be in China and India. Currently, as of 2016, solar power provides just 1% of total worldwide electricity production but growing 33% per annum.
Invented by Japanese scientist Tsutomu Miyasaka, the cells use minerals forming a crystal structure called perovskite, which can be used in a device to turn the sun's rays into electricity.
A key element in manufacturing perovskite is iodine. While hardly a resources powerhouse, Japan happens...
Holosun HS510C 2 MOA Dot Or A 65 MOA Ring Open Reflex Circle Dot Solar Power Holographic Red Dot Sight.
Used once, no problems. No scratches on the lens.
Has a slight scuff on the right side because I didn't pack my bag properly : | see pics
Includes all original packaging.
- Parallax free with unlimited eye relief.
- New advanced technology LED allows up to 50,000 hours of operation on one CR2032 battery
- 2 MOA dot and a 65 MOA ring
- Dot only, Ring only, or Dot and Ring reticle combinations
- Unlimited field of view
- Titanium-alloyed, shock resistant hood
-...
Anyone have real world experience with these? Anyone now of a similar device in concept that I should look at? They aren't cheap by any definition and they cost more than the conventional generator we installed some years back. (As they become more common, I hope the price goes down.)
As the...
60 LED Solar Security Light
On sale until March 10.
We have a few of these on the property and they've held up well in Pacific Northwest weather. A key consideration is to mount the solar panel to maximize the capture of solar energy, especially on gray days.
Looking at upgrading my solar to this kit from the "Orange store". A 10% vet discount and apparently the best warranty salts the sale.
Grape Solar 100-Watt Basic Off-Grid Polycrystalline Silicon Panel Kit-GS-100-BASIC - The Home Depot
Will add two 45w glass mat 12v batteries in parallel to...
How (Not) to Run a Modern Society on Solar and Wind Power Alone
While the potential of wind and solar energy is more than sufficient to supply the electricity demand of industrial societies, these resources are only available intermittently. To ensure that supply always meets demand, a...