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Author Topic: Photvoltaics (PV)  (Read 8969 times)

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AGelbert

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Re: Photvoltaics (PV)
« Reply #225 on: July 03, 2017, 01:55:48 pm »
"You do not Drill for solar. You do not Mine for solar. You MANUFACTURE SOLAR; THAT CREATES JOBS!"   


Solar power is already saving lives in the US. Here's how 

Updated by David Roberts@drvoxdavid@vox.com  Jul 2, 2017, 9:22am EDT

SNIPPET:


And finally, these are just benefits no account of the costs of a large-scale shift to solar, which are real.

Okay, with all that said, on to the results! 

1) Benefits of existing solar

Here are the annual benefits of the solar installed in the US to date:


benefits of solar (DOE)

For the chart averse, that's:

Annual reduction of 17 million metric tons of CO2, which is, based on the central estimate of the social cost of carbon, "equivalent to an annual global benefit of $700 million."

Annual reductions of "10,000, 10,300, and 1,200 metric tons of SO2, NOx, and PM2.5, respectively ... which provide annual domestic air quality benefits of $890 million."

Annual water "withdrawal and consumption savings of 294 billion gallons (0.8% of power sector total) and 7.6 billion gallons (0.5% or power sector total), respectively, with much of those savings located in drought-impacted California."

It's worth keeping in mind that the somewhat clinical phrase "domestic air quality benefits" is another way of describing fewer kids having asthma attacks, fewer adults missing workdays, and fewer people dying of respiratory and circulatory ailments.

It's also worth keeping in mind that none of these social benefits are priced into the cost of solar; it is not compensated for its "positive externalities." If it were, it would knock almost 5 cents a kilowatt-hour off the price, which would mean the Sunshot cost target was already achieved.


Agelbert NOTE: Give the subsidies to Renewable energy Technologies, not polluters that are killing us! 


2) Benefits of solar at Sunshot target levels

Here are the benefits of hitting the Sunshot solar penetration targets (again, as compared with a scenario in which no new solar is built):

benefits of sunshot solar (DOE)

For the chart-averse, that's:

A cumulative savings of 10 percent of power sector emissions from 2015 to 2050, which represents a $259 billion global climate benefit.

Reductions in emissions of sulfur dioxide (SO2), nitrogen oxides (NOx), and fine particulate matter (PM2.5) sufficient to secure a cumulative $167 billion worth of avoided health and environmental damages.

Reduction of power sector water withdrawals by 46 trillion gallons (4 percent of total sector withdrawals) and water consumption by 5 trillion gallons (9 percent of total sector consumption). Importantly, water savings are concentrated in arid states.


The climate and pollution benefits together amount to $400 billion between 2015 and 2050, measured in present-value terms and using central estimates.

3) Where the benefits are concentrated

Finally, it's interesting to note that the local benefits of solar vary significantly based on what kind of power it displaces. In places where it pushes aside coal (as opposed to natural gas or even wind), benefits are highest.

I already mentioned that the water-saving benefits of solar are overwhelmingly concentrated in arid California. Here's where the local air quality benefits are concentrated:

solar air quality benefits (DOE)

On the left are the monetized air quality benefits. On the right are the equivalent changes in solar prices if the benefits were included in costs. Looks like the heavily populated Northeastern corridor could use more solar! 



https://www.vox.com/2016/5/19/11711040/sunshot-solar-benefits

Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

 

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