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Solar and batteries can power the world

nworbmot.org

371–380 of 473 posts

Re: Solar and batteries can power the world

#371

Earlier quoted context omitted.

> Besides direct subsidies, wealthier home owners have often been paid the retail rate for the electricity they sell to the grid. This causes higher electricity bills for those in apartments and those who can't afford to put panels on their roof I don't think you thought this up yourself, so I won't blame you for it, as this exact, word for word swill is mindlessly repeated by a lot of people, so thats ample evidence…

I have some experience with distributed energy generation and have met with senior utility executives many times while trying to implement some grant supported projects through my work. It turns out that a big problem is that whenever we install local generation it costs utilities a ton of money. They bundle the cost of grid maintenance into their per kWh charges. These costs, which include debt service, maintenance,…

> Public utilities and pension funds hate green energy, they are a major factor in west's pathetic performance when it comes to solar adoption vs China

No this statement is absolutely wrong. Here's why:

> west's pathetic performance when it comes to solar adoption vs China

China is dominating energy because the CCP doesn't care what their citizens think. They need energy and they are doing everything they can do to get it. They will put you behind bars at best or kill your family and demolish your house if it gets in the middle of a power line trench. For China, energy isn't a "nice to have" - they realize it's essential and they won't stop until they get there.

China is the person out in the mountains being chased by a hungry bear while we in the west is the person sitting in their air conditioned room debating whether to drive or take an Uber to have a drink with buddies.

News came out last week that you can buy a Chinese hypersonic missle for $100k - you can't even build a little two car garage where I am for double that price.

> Public utilities and pension funds hate green energy

Pension funds don't care whether energy is green or orange. What they hate are the horrible returns affected by all the stealing and grifting that happens in the name of "green energy".

Public utilities (atleast in the jurisdictions that I am aware of) love any infrastructure work - they are guaranteed a 10% ROI by the government on any approved infrastructure work they do. If you could work with them to build infrastructure to cremate just newborn kids and get it approved by the CPUC, they will happily start work on it tomorrow. The reason why they hate green energy is because after they've made their 10% ROI, they are now stuck with a power source that costs them more than their non-green sources and that hurts their razor thin margins.

However, as the customer - I don't care either about what public utilities and pension funds hate or don't.

What I do care about is having affordable and reliable power and I absolutely can get that with my own solar panels and batteries. The fact that it's green is a happy sideffect for most.

The reason why every home in the U.S. isn't overflowing with solar panels and batteries is because of regulation and government shenanigans making retail costs really high. Average people in Pakistan, South Africa and Lebanon certainly power their whole homes with solar panels and batteries but their governments don't have nonsense taffifs and fees on Chinese solar equipment.

Re: Solar and batteries can power the world

#372

Earlier quoted context omitted.

Then please explain, to me he brought up an unrelated point about ethanol (which is often poorly understood and mischaracterized anyways) consuming a portion of agriculturally productive land. Which BTW this agricultural land that produces ethanol is probably not even close to the best place in the country for industrial scale solar from a LOT of perspectives.

My "try to understand" take: We subsidize corn, then use it yo make a less efficient fuel. The money involved in this process likely takes away from subsidies to other forms of energy. There are a great many activities we do not subsidize, but solar is one that if we did, would produce an outsized benefit to society. And the more we do, the better. Redirecting an ethanol subsidy to solar would be a far more beneficia…

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Re: Solar and batteries can power the world

#373
post #343

Earlier quoted context omitted.

I love this! Thanks for the detailed response, super interesting

Thank you. I hardly get to explain the techology I 'invent' (power chips, power router, parallel battery charger, car firmware, charging (station) software, simulation software) because the investors customers only want to hear that its cheaper or sells better (then Tesla). Or that besides going from 4000 to 20000 dis/charge cycles you also prevent any li-ion fires and have fire alarm sensors on every battery cell. T…

Why are the prices in the USA so much higher?

Also: when we last spoke you were talking about energy storage solutions. How has that progressed recently?

Re: Solar and batteries can power the world

#375

Earlier quoted context omitted.

Thank you. I hardly get to explain the techology I 'invent' (power chips, power router, parallel battery charger, car firmware, charging (station) software, simulation software) because the investors customers only want to hear that its cheaper or sells better (then Tesla). Or that besides going from 4000 to 20000 dis/charge cycles you also prevent any li-ion fires and have fire alarm sensors on every battery cell. T…

Why are the prices in the USA so much higher? Also: when we last spoke you were talking about energy storage solutions. How has that progressed recently?

$0,01 per kWh from solar, that is the price worldwide on the condition that they sell you the panels at a reasonable price and don't overcharge you on all the other parts like micro-inverters, field or rooftop installation, permitting and labour. That adds up to around 5 cent for rooftop solar in Australia for example (including everything). 1 cent is for solar panels lasting 50 years (with 20% degradation over decades), we refer to such prices as Levelised Cost Of Energy (LCOE) over lifetime. It halved in the last 10 years for solar and it will halve again (20% cost reduction on each doubling of manufactured capacity). Similar for batteries, they also go down around 20% each year.

1 kWh Wind, or Hydro, Thermal and other renewables do not go down as much in cost price because they have mechanical or chemical components that do not last as long as solar cells and need maintenance and repair.

We keep the cost low by group buying in bulk at wholesale prices (a shipping container with 770 panels for 20-30 houses) with our coop instead of premium installer prices by the electrotechnical or building companies. If you let our Fiberhood coöperative in the US install your solar, batteries, tiny house or eCamper you do not pay these high tariffs, we have enough panels pre-tariff. So you still can hit 1 cent per kWh but only if you get the decent installers and sellers.

Re: Solar and batteries can power the world

#376

Earlier quoted context omitted.

Thank you. I hardly get to explain the techology I 'invent' (power chips, power router, parallel battery charger, car firmware, charging (station) software, simulation software) because the investors customers only want to hear that its cheaper or sells better (then Tesla). Or that besides going from 4000 to 20000 dis/charge cycles you also prevent any li-ion fires and have fire alarm sensors on every battery cell. T…

Why are the prices in the USA so much higher? Also: when we last spoke you were talking about energy storage solutions. How has that progressed recently?

Our energy storage solutions have widened. First you timeshift all electricity use of the car, house or neighborhood into daylight hours when the sun shines. This means a bunch of electronics and software changes. Next we build termal storage solutions, you can store heat much cheaper than electricity. You move heat around with a heat pump. Or you heat your water tank with a datacenter computer in your water tank (for free). In summer you store solar electricity in ice. Or you store it in iron, aluminum, glass or silicon by melting ore and purifying, You embodied the solar electricity into the purified ore. In northern and southern latitudes you need 10 to 50 times more solar panels to heat houses during cold winters. This means you have large overcapacity in summer that you can sell as embodied iron, etc. Batteries are only needed to store for the hours there is no sunlight during 24 hours, no need to store longer. The cheapest place is to store it in the electrical cars in your neighborhood. That is why we install our own brand ev car chargers in the neighborhood of the panels. In contrast, Tesla chargers overcharge you a factor of 34 to 76 and that's partially because its fossil energy and transmitted over hundreds of miles.

My message is that to reach 1 cent per kWh we need to solar electrify all our infrastructure https://www.youtube.com/watch?v=iEOPx2X-EtE

Also Trump doubling solar panel prices with tarifs and shutting down subsidies is wrong, it makes it much more expensive. Add an oil third world war however does help, we sold double solar, batteries and evs in the last month.

Re: Solar and batteries can power the world

#377

Before anyone cries about the environmental cost of lithium, concrete batteries are a thing and are far more ideal for grid storage.

You mean gravity batteries using concrete weights? A scam for suckers.

Nope: https://news.mit.edu/2025/concrete-battery-now-packs-ten-tim...

Re: Solar and batteries can power the world

#378
post #352

Earlier quoted context omitted.

We will have to see if Deere's new tractor which runs on E98 actually makes it to market. The blunt question is: >How many calories of energy to grow 1 calorie of corn (using modern industrial farming practices)

Another commenter said this ratio is 1.3 in favor of output.

Interesting --- does that also include considerations such as oil for lubrication and fertilizer sourcing?

Re: Solar and batteries can power the world

#379

Earlier quoted context omitted.

Damn I didn't know it was that bad. Ideally you'd grow algae from sewer waste and make fuel from that, but this is the US we're talking about.

Algae needs solar light, so you will have to flood a lot of land to get enough. Also, in case of a war or blockade you can switch the corn use from etanol to food. You will have to eat tortilla and polenta for a year [1] but it's better than algae from seawater or famine. Here we use sugar cane to produce etanol, it's more efficient because it's a C4 plant. I guess it's possible in the south of the US. [1] It's not s…

> Algae needs solar light

Same with corn

> so you will have to flood a lot of land to get enough. Not necessarily, just use pre-existing water treatment plants to grow algae, and vertical photobioreactors exist. Algae also has a much higher harvest rate versus corn, and if you only wanted to ferment the algal biomass into corn you'd have much higher yields than corn.

> Also, in case of a war or blockade you can switch the corn use from ethanol to food. You will have to eat tortilla and polenta for a year [1] but it's better than algae from seawater or famine.

True

> Here we use sugar cane to produce etanol, it's more efficient because it's a C4 plant. I guess it's possible in the south of the US. Agreed.

Re: Solar and batteries can power the world

#380
post #363

Earlier quoted context omitted.

No reason to be rude or hyperbolic - I agree with you that cars destroy communities and we should strive to reduce the need for cars and parking. For solar powered homes specifically though, multi-story buildings are much harder to run solar powered from the simple ratios - even if you reduce energy use 75%, at 4 stories you are break-even in roof-ratio-to-energy-need. I’ve worked in this space a while, and it’s now…

I mostly agree with you, however... You don't need to colocate solar at the point it's used. Utility solar is cheaper than rooftop, by multiple. The last part isn't true. There's no way you're running a home, including heat, entirely of solar in the winter in the Upper Peninsula of Michigan.

Utility solar is cheaper in studies that do not factor in the cost of distribution, but the picture is much less clear when total system cost is considered - not having to pay for expanded distribution grids or new interconnects is a major benefit of residential production.

As for the last part not being true, can you clarify? The majority of the earths population lives between the 20th and 40th latitude, the band around the earth approximately between Madrid and the Sahara desert. Sure you can’t run a poorly insulated home in northern Michigan on solar year around without considerable expense, but that’s nowhere near where the majority of humanity lives.

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