Climate Change

[SumJongGuy]

I'd think the farther north or south the panels are, the more the need for tracking capability.. Seasonal differences would matter more farther from the equator.

[joeshek]

Yea, most big installations are fixed. So my question was, what does a 100mw solar farm put out from sunrise to sunset on a perfectly clear day.

https://pvwatts.nrel.gov/

Calculator that will give you the output of a solar panel installation anywhere in the US. It takes into account seasonality, as well as typical weather patterns.

Over the course of a year, a 100mw installation will produce150,352,188 kWh in my home zip code in CO, using the default installation angles in the tool.

[joeshek]

Also relevant - cool article in the times. Compliments the RMI slide deck that was circulating a month or two ago.

https://www.nytimes.com/interactive/...smid=url-share

Message - buckle up. Renewable (and EV) transition is going to happen fast over the next 5-10 years. And the IRA is having a way bigger impact than anticipated.

[Cocximus]

https://pvwatts.nrel.gov/

Calculator that will give you the output of a solar panel installation anywhere in the US. It takes into account seasonality, as well as typical weather patterns.

Over the course of a year, a 100mw installation will produce150,352,188 kWh in my home zip code in CO, using the default installation angles in the tool.

Cool links thanks. Seems like "solar is cheapest per kw" does not take into account a multitude of factors such as downtime and as someone pointed out earlier, storage.

Build nukes. Worse case scenario they wipe out a bunch of people which in the end still benefits the environment.

[neufox47]

Yea, most big installations are fixed. So my question was, what does a 100mw solar farm put out from sunrise to sunset on a perfectly clear day.

My rooftop 13.2 kWh system does a max of about 83 kWh in a day. I do not have ideal exposure. 1/2 of the panels face east on a 3 pitch roof and the other half face W on a 6 pitch. The west facing panels are nice for tou generation during peak hours though. By me, a kWh produced from 3-9 pm is worth a little over double any other time.

This system is shaping up to be one of my better investments. It should pay for itself in about 5 years, maybe less at the rate PGE increases rates,and hopefully it lasts 20-30.

[kamtron]

I had some direct experience with a solar panel for the past two weeks in mostly desert areas. I learned its output quickly drops when the sun is not hitting it at 90°. Is this the same for commercial large scale power generating solar farms? What is the output % during a day for a solar farm? Yes, there's set-up for sun tracking panels but they are not common on big solar farms.

Incidence angle matters, just like sun angle for pow preservation or corn softening. Trig

[ticketchecker]

Physicist, meteorologist testify that the climate agenda is ‘disastrous’ for America

https://www.theepochtimes.com/articl...PV2dMJTwQIo0zU

[old goat]

Emeriti professors. Who obviously don't get outside much.
Happer is 84 years old, and his field was optics, not climate.
Lindzen is 80, and his field was atmospheric physics, not climate.
So old guys yelling at the sky, literally.

[skaredshtles]

Physicist, meteorologist testify that the climate agenda is ‘disastrous’ for America

https://www.theepochtimes.com/articl...PV2dMJTwQIo0zU

Epoch Times?

Srsly?

[paulster2626]

Physicist, meteorologist testify that the climate agenda is ‘disastrous’ for America

https://www.theepochtimes.com/articl...PV2dMJTwQIo0zU

You should be concerned that something from the Epoch Times comes across your field of view, and even more concerned that you feel it is share-worthy.

[ticketchecker]

Emeriti professors. Who obviously don't get outside much.
Happer is 84 years old, and his field was optics, not climate.
Lindzen is 80, and his field was atmospheric physics, not climate.
So old guys yelling at the sky, literally.

Ha! Honestly I'm not familiar with Epoch Times but figured it was something like that based on the friend who posted it to FB. Thanks for confirming.

I'm going back to shopping for a hybrid or EV car for the GF now.

[NWFlow]

Lol at the link to the "pdf" with their "extensive data." I wonder just how infected with propaganda my phone is after downloading that

[Bunion 2020]

In the first ruling of its kind nationwide, a Montana state court decided Monday in favor of young people who alleged the state violated their right to a “clean and healthful environment” by promoting the use of fossil fuels.

The court determined that a provision in the Montana Environmental Policy Act has harmed the state’s environment and the young plaintiffs, by preventing Montana from considering the climate impacts of energy projects. The provision is accordingly unconstitutional, the court said.

The win, experts say, could energize the environmental movement and reshape climate litigation across the country, ushering in a wave of cases aimed at advancing action on climate change.

[skaredshtles]

NOT IN MY MONTANA!

[PB]

But ..... isn't Montana a small town?!?!?

[Core Shot]

Epoch Times?

Srsly?

Yeah. At least link the study so we don’t know you found it on a hack website

https://co2coalition.org/wp-content/...2023-07-19.pdf

[bodywhomper]

This system is shaping up to be one of my better investments. It should pay for itself in about 5 years, maybe less at the rate PGE increases rates,and hopefully it lasts 20-30.

How do you know that you’re roofing material and installation will last that long? We bought our house 4 years into a new “30 year” roof. Part of it started leaking 8 years after installation. That experience has made us weary of considering rooftop solar.

[PB]

Not all roofing jobs/contractors are the same, nor are the claims of real estate sellers. We've got a 18 year old T&G roof that's supposedly a 20-25 year install, with over 50 panels installed and a bushel of penetrations, and nary a leak yet. I am, however, beginning to evaluate a new roof because ....... T&G. Expecting to see some looks of horror when collecting estimates, which will be painfully high at best.

[bodywhomper]

When I called the roofing company that did the work (I had the receipt), they told me 5-yr guarantee, which I was past, but gave me the # for a retired roofing contractor who does consulting. That guy was really helpful, evaluated my whole roof with me (asphalt shingles), showed me how to find places that are likely sources of leakage (slightly misalignments of the roof strips), introduced me to thru-the-roof and Henry’s, and the method of peeling the shingle strips and checking the nailheads for penetration depth and rust.

[neufox47]

How do you know that you’re roofing material and installation will last that long? We bought our house 4 years into a new “30 year” roof. Part of it started leaking 8 years after installation. That experience has made us weary of considering rooftop solar.

I don’t but I went for a 50 year asphalt shingle from a highly recommended roofer who did a nice job. I also went with a local solar company that has been around and I knew the crew. I’ll be shocked if the shingle fails before the solar. Most leaks though aren’t due to the shingle failing they are due to flashing issues.

That said the previous roof was installed in 99 and was badly failing (however it was a wood composite shingle that was known to be defective). I’d say asphalt shingles durability are better known.

With a payback period of 5 years though I’ll take that bet every day. The battery backup is a nice benefit too. Unfortunately there is not that type of return with NEM 3, so the deal I got isn’t the same as the one you would get now.

[bodywhomper]

Thanks for the response!

[SumJongGuy]

I've replaced a roof on the main part of our house TWICE since the house was purchased in 1996, 1999 and 2017. One thing I've definitely noticed is the more I walked around on the roof playing whack a mole patching leaks, the more new leaks pop up. Walking on those shingles causes the nail heads to compromise/puncture the shingles you are stepping on, compromises the adhesive under the shingles and tar paper, and rattles the boards under them. It does more harm than good. Installing panels can totally cause the same issues.

[neufox47]

If walking on your asphalt shingle roof caused leaks your roof was really close to its end of life.


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[SumJongGuy]

If walking on your asphalt shingle roof caused leaks your roof was really close to its end of life.


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That's a fact, but walking around up there causes duress that can cause earlier demise nonetheless. I now avoid it at all costs. No way panels are going up there on anything more than a year old.. We're looking at going there next time, like around 2035.. and metal.

I'd wager that climate change is to blame as well for roofs having more issues and failing sooner than in the past. A 30 year roof is now a 20 year roof around here. Expanding and contracting of the metal nails through extreme temperature changes likely shortens the life of a traditional roof as well.. It likely impacts all major infrastructure more and more..

[neufox47]

Man I can’t wait for summer to be over. Ours hasn’t even been that hot but I’m sick of 90+ degree days already.


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