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johntwoods t1_ivmazzf wrote

Every time I see a parking lot here in the United States in July or August I always think why the fuck is this not covered in solar panels?

So, good on France.

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kosmonautinVT t1_ivmeyt4 wrote

We want our cars as hot as the Devil's asshole and we like it that way

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press_F13 t1_ivmk4x8 wrote

Cover the cars with el-voit-coating, then send the electricity via WiFi/Bluetooth

Ok, now, how to transmit electricity like that ...

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beachjustice t1_ivno4tk wrote

No no no just use that electricity to power an extremely bright light and shine it into another solar panel!!

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datascience45 t1_ivp4eil wrote

Give the cars the COVID vaccine and they will be able to receive the electricity!

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Rokmonkey_ t1_ivmpi2g wrote

Cost.

The higher they are off the ground the more steel you need to keep them up. They are more subject to wind loads. They are also more difficult to service.

Then you ask how high to make them. Tall enough for a Tesla, a crossover, a lifted pickup, a semi, taller?

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johntwoods t1_ivmq5v1 wrote

10' high ought to cover the vast majority of consumer grade vehicles on the market.

So, 10'.

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corrado33 t1_ivmrcqi wrote

Yeah it's not a particularly hard question to answer. Just ask yourself this.

How high are bank teller windows? How high are parking garages? How high are the lowest acceptable bridges off the roadway?

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DonarArminSkyrari t1_ivmsesr wrote

Yeah, I think the best the US could ever usually do is post these at least at semi tier. There are a lot of semi drivers with sleeping cabs who use empty parking lots overnight. Plus uh, I know specifically of at least one bridge that's got at least 12 signs on each side warning about its height limit and despite that people hit it at least once a month, I imagine the same risk with solar panels would be quite expensive.

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greenmachine11235 t1_ivna3uh wrote

There are bridges with heavy steel beams in front of them to keep people from hitting the bridge by having them hit the beam. I imagine something similar could work there if it really became an issue

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tinacat933 t1_ivnekr5 wrote

So leave some space for the semis or larger vehicles without coverage

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KingBooRadley t1_ivpcru9 wrote

I don’t know if French people park many semis in public parking lots. I’m guessing Non.

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DonarArminSkyrari t1_ivnjm6k wrote

Depends on the parking lot. One for a grocery store or a mall or strip mall? Sure, plenty of space that would make sense and could easily be worked around. But for a fast food joint or convienence store, most would need to be uncovered and just spackled with a few token areas for panels, and for most hotels I've seen more than half would have to do the same as well. These are sometimes the only places these people have for miles. These aren't easy to turn vehicles either, they usually look for empty parking lots because of how wide their turns are, and I've seen gas trucks hit dumpsters and randos driving uhauls hit gas pumps. If every panel isn't by default hung high enough that a semi couldn't accidentally hit it, it will get hit at least once within a year, and if there's a support beam within the bounds if the parking lot that will get hit at least once every 2. We still have plenty of good places to put panels though where they aren't at risk, every rooftop, all over signage, mounted like a Canopy plenty high up over various public areas, I just think it's logistically impossible to cover every parking area in the US with them without having so many exceptions that it becomes untenable.

On a slightly separate note, parking lot sidewalks are one of the few places I can ever find to sit down and relax on a walk. Everywhere around me that isn't a public park has gotten rid of sitting areas and public benches because they draw in loiterers, drunks, and drug abusers, or at least that's the excuse used. It's fucking sad that part of me is upset at losing what's objectively and already sad thing to latch onto.

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tinacat933 t1_ivo8i28 wrote

Yea why not roofs of buildings like costco

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Tobias_Atwood t1_ivpp4tg wrote

Honestly I gotta wonder why every business in America hasn't at least tried to budget for rooftop solar. Once you get it installed that's easy money off all your power bills.

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twokietookie t1_ivod90v wrote

You do like drive thrus put a hoop at the entries with a tube hanging from it so if you're too tall it bangs your shit.

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imnotsoho t1_ivmtecm wrote

Will those solar panels ever produce enough electricity to produce the steel needed to build the supports? If not they are carbon positive (not in a good way) from the start.

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TheThiefMaster t1_ivo3i4u wrote

Steel is ~6000 kWh/ton to produce. My home solar array has so far produced 26000 kWh. I think they'll be fine.

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rileyoneill t1_ivni99r wrote

The parts are fairly standardized and are a commodity product. Servicing them is not a huge deal. I have seen several of these covered parking lots here in California. 3ish acres of parking would be a 1MW system, which would generate enough energy for 3000-4000 miles of driving per hour of sunshine, if they were selling it to EV owners for 15 cents per kWh they would be selling like $150 per hour, 2500 hours per year, $350-$375k per year, on a system that was maybe $2M to build, not a bad investment, $100k per year profit after financing costs for the first 10 years.

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tomfreeze6251 t1_ivoduwz wrote

If it makes sense financially, then why aren't the parking lot owners making the decision themselves?

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Cat-in-a-small-box t1_ivojq8n wrote

But don’t the systems need to be maintained and updated semi regular? That would drive costs up after a certain time, making it less profitable.

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rileyoneill t1_ivou8do wrote

They need to be cleaned, and if something breaks they need to be fixed, but they are pretty low on maintenance.

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RoboFeanor t1_ivoy4n9 wrote

The French law makes exceptions for truck parking, and in 5 years in France I never saw a single lifted pickup.

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Rokmonkey_ t1_ivpl4m3 wrote

Sure makes sense, I'm American so there are different considerations here.

I'm also not against this, just answering the question. The higher off the ground the panels are, the more it costs. Its a cost benefit calculation.

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shitposts_over_9000 t1_ivoaf11 wrote

Parking lots where I am are about $3 per square foot.

Solar cells are about $9 per square foot.

You are quadrupling the price before you even get into having to add the frames to elevate them above the 14' minimum clearance, bury all the additional cabling and infrastructure or deal with all the additional permitting and regulatory compliance not to mention liability of you previously open lot now being a code compliant structure.

After that you also have all the headache of actually plugging the cells into something productive.

Industrial power like you would find in a large grocery store makes it nearly impossible to simply backfeed like you would residential solar so you would either need an independent system that used it for something like charging batteries that can later be used for something or a second utility service specifically for the solar to dump it's excess. If you go the second route and you have a decent sized parking lot that is going to require a dedicated run to a substation in some cases because the local distribution lines aren't sized for that kind of local load.

If the cells are doing something productive they will also require maintenance far more than a parking lot that you can safely ignore for a decade or two at a time.

It will also make things in property management like snow removal far more time consuming and risky so therefore more expensive as well while adding additional pest control requirements for all the critters that will try and get into these structures and providing far more surface area for your vandalism cleanup folks to deal with.

All of these costs will be passed directly to shoppers and anyone using the utility.

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hvdzasaur t1_ivpmoea wrote

I mean, France is pushing efforts to de-car it's urban centers. Having all this additional cost discourages the construction of new parking lots (which this applies to), and thus discourages vehicle traffic. It also helps prepare for the EU ban on ICE vehicles in 2035.

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shitposts_over_9000 t1_ivpro34 wrote

Which if they were only applying this law to metros above a certain level of population density would make sense, but this just applies the cost to the bottom end of the supply chain across the nation and allows it to multiply as it flows up.

France has nationwide population density similar to the US midwest, the car bans only make sense in about 9% of the country, for the remaining 92% this is just added cost for near zero benefit.

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hvdzasaur t1_ivqfey4 wrote

>France has nationwide population density similar to the US midwest

Not at all. France has about a population density of 117.7 people per sqkm or 304.8 per square mile. the US midwest supposedly has 90 people per sqmile, which is approx 34.7 per square km. France is more than 3 times as densely populated. Not only that, 44% of the country lives in the 20 largest metro areas. How is that in any way similar?

Did you confuse miles and km when looking up the numbers? r/confidentlyincorrect

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BackgroundAccess3 t1_ivpu28r wrote

seeing as big parking lots are a big subsidy for car usage, maybe it's good if they cost more to build to reflect their environmental costs...

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MAVvH t1_ivoej6m wrote

... why did you specifically say Tesla but non-specifics for the other vehicle types?

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Rokmonkey_ t1_ivpkl6q wrote

Just the first car that came to mind as a not very tall vehicle most would be familiar with. No other reason.

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Wafkak t1_ivprngo wrote

Enough for a hatchback, sedan or stationawagon. And a few spots for vans.

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TingleyStorm t1_ivq1oif wrote

If you make them as tall as a standard overhang, like one you would find as apartment-designated parking, you will be able to fit almost all vehicles except for bro-dozers.

I’ve only ever seen people with semi trucks or campers park at the back of the lot anyways, so you wouldn’t have to cover the WHOLE lot

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nobody2008 t1_ivml6n1 wrote

Here in Cali they do that. Libraries, schools, and other public places at least.

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KO4Champ t1_ivnnx8w wrote

All buildings and parking lots should be covered in solar panels because duh. There are solar panels on a community college lot near me in LA and it always makes me happy.

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daiaomori t1_ivooyep wrote

I worked with a company in LA for a while, and a pretty clever guy (no, for real - he was kind of the opposite of stupid) once argued against me when I said, listen, you have all those flat roofs, I mean, the major part of El Segundo is like that, and you have sun going crazy 12 month a year, plus you need a ton of electricity for all the ACs, why the heck don’t you put solar everywhere…

And he was „nah I don’t think it will pay off… I mean you need to replace them after 20 years or so, don’t you…“

Me, looking at my measly 900W solar array in Germany, providing for much of my basic electricity needs while it’s pretty dark here like 80% of the year o.O

Well, that was 10 years ago. I hear things have changed…

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Mpikoz t1_ivnv0do wrote

With me it's those large warehouses, my god such a waste of chance to utilize all that rooftop real estate for energy production

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drakeekard t1_ivqbzsc wrote

C'mon America...copy them. The planet would earn a big 'W'

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