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Dawn of Solar Age Declared as PV Beats All Other Forms of Power (bloomberg.com)
Solar power blossomed faster than for any other fuel for the first time in 2016, the International Energy Agency said in a report suggesting the technology will dominate renewables in the years ahead. From a report: The institution established after the first major oil crisis in 1973 said 165 gigawatts of renewables were completed last year, which was two-thirds of the net expansion in electricity supply. Solar grew by 50 percent, with almost half new plants built in China. "What we are witnessing is the birth of a new era in solar PV," Fatih Birol, executive director of the IEA, said in a statement accompanying the report published on Wednesday in Paris. "We expect that solar PV capacity growth will be higher than any other renewable technology through 2022." This marks the sixth consecutive year that clean energy has set records for installations. Mass manufacturing and a switch by governments away from fixed payments for renewables forced down the cost of wind and solar technology. The IEA expects about 1,000 gigawatts of renewables will be installed in the next five years, a milestone that coal only accomplished after 80 years. That quantity of electricity surpasses what's consumed in China, India and Germany combined.
Always a bad thing to assume people know your 2-letter acronyms.
https://en.wikipedia.org/wiki/...
Photovoltaics (PV) is a term which covers the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry. A typical photovoltaic system employs solar panels, each comprising a number of solar cells, which generate electrical power. PV installations may be ground-mounted, rooftop mounted or wall mounted. The mount may be fixed, or use a solar tracker to follow the sun across the sky.
- Vincit qui patitur.
No they are not projected to last 50 years at full or even majority output.
http://www.engineering.com/ElectronicsDesign/ElectronicsDesignArticles/ArticleID/7475/What-Is-the-Lifespan-of-a-Solar-Panel.aspx
http://energyinformative.org/lifespan-solar-panels/
Personal anecdote, but I have a former neighbor who still has PV panels up that he threw in his backyard back in the 1980s, and they are still running at their rated wattage, if not a little bit above it.
The nice thing about solar panels is the fact that once set up, assuming no active tracking system, you don't have to do much upkeep. No moving parts, everything is solid state, and if one has an on-grid system, there are no batteries to have to keep watered or replaced.
I really can't think of anything wrong with solar, other than the obvious... it only works a part of the day.
Is is it true that it still takes more energy to fab the silicon, make the frames, and deploy the panels than they ever get back in their operational lifetime?
Although I'm sure Exxon would like that misinformation to stay popular, that question was put to rest long ago, both in terms of the panels themselves and the PV industry as a whole. And that's reaching back to pay for panel development when production was inefficient.
Video if you don't like reading.
That's our life, the big wheel of shit. - The Fat Man, Blue Tango Salvage
Nothing. A well-made solar panel will last 40 years (there are some 40 year old solar panels still operating fine) and will probably last over 70 years: https://us.sunpower.com/sites/...
Silicon is a *metal*. Sand is a silicate.
https://en.wikipedia.org/wiki/Silicon
There's an OSHA limit for silicon particle exposure at the end of the article but it doesn't seem particularly toxic.
The manufacturing process for panels reportedly uses chemicals that are quite toxic, however.
The two references you provide indicate that a reasonable , even conservative estimate is about 0.5% degradation per year. After 50 years that leaves 78% of initial output. Pretty good I'd say!
SB
Depends where you life.
In europe household battery storages are more and more connected into so called 'virtual power plants'.
They are used for balancing power snd reserve power.
That earns the owners money.
Going disconnected would make them lose that money.
In other words in the center of a city it makes no sense to go disconnected.
In a hut in a forrest up the mountains, perhaps it does.
Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
It's like that in texas too. We used to have 6 good weeks of winter with regular periods longer than a week where there was ice on the ground while I walked to school.
Now, we get a few hours at night of freezing temperatures. But (on topic) we did get 8 weeks of overcast a couple years ago. That would have been a bad case for solar.
That said...
https://cleantechnica.com/2017...
Germany has gotten 85% of their total power generation from solar some days this year and projects that such days will become increasingly common going forward. By 2030, they project year round coverage (which means during sunny months they will have power to spare.).
She was like chocolate when she drank... semi-sweet at first and then increasingly bitter.
Right. That's why system operators like California ISO aren't counting each and every megawatt generated by renewables.
http://www.caiso.com/outlook/o...
http://www.caiso.com/informed/...
http://www.caiso.com/informed/...
Also, SoCal Edison has been bringing online some incredible advances in energy storage technology. Systems like these will begin taking hold across the country over the course of the next decade, changing the dynamics of solar energy availability and reliability.
https://www.edison.com/home/in...
It ain't your grandpa's solar panel anymore. The system is evolving.
Beware of the Leopard.
My 10 year old PV array is still going strong and has paid for itself many times over. I know it wont last forever but its required no maintenace in that time and im really happy with it. Of course I should give it a wash to get a couple of % back but hey.