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US electricity demand surged in 2025 – solar handled 61% of it

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Re: US electricity demand surged in 2025 – solar handled 61% of it

#41
I've thought about installing solar panels on my roof for years. But when I factor in installation costs, it never makes sense because the local energy rates are pretty reasonable... Also, I live in Southeast, a place with plenty of sun but nowhere near the Southwest.

Solar panel prices fell hugely in the past years. Is there anything that could significantly reduce installation costs?

Re: US electricity demand surged in 2025 – solar handled 61% of it

#42
post #4
post #3

Solar can be deployed by hundreds of thousands of individual efforts and financing at the same time, with almost no bureaucracy. It starts to produce electricity basically the same day. I can't imagine anything being able to compete with that for speed and scale - or costs, for that matter. Once deployed it's basically free.

The issue is that works perfectly well when solar is a small % of the grid, but when that number grows, then you need grid scale solutions and coordination for things to continue working well. And that requires both technical skill and political will.

This isn’t remotely true. Solar / wind / nuclear / coal / gas / any electrical source including from neighboring grids can be inbound or outbound from your grid using, the grid. There are capacitors and transformers, relays and transmission lines. Any energy source can provide power. Solar used to give money back to its owners by selling power back to the grid but they killed that initiative quickly and will just use your energy you provide.

The issues you describe are from coal, oil, and gas lobbyists saying solar isn’t viable because of nighttime. When the grid is made up of batteries…

If every house had solar and some LiFePo batteries on site, high demand can be pulled from the grid while during low demand and high production, it can be given to the grid. The energy companies can store it, hydropower or batteries, for later. We have the ability. The political will is simply the lobbyists giving people money so they won’t. But we can just do it anyway. Start with your own home.

Re: US electricity demand surged in 2025 – solar handled 61% of it

#43
post #31
post #4

Earlier quoted context omitted.

The issue is that works perfectly well when solar is a small % of the grid, but when that number grows, then you need grid scale solutions and coordination for things to continue working well. And that requires both technical skill and political will.

So your implication that other sources of energy currently do not need scaling coordination somehow? I fail to see how that is true, maybe you can provide some insights?

It's easier to coordinate N electricity suppliers when N is small.

Re: US electricity demand surged in 2025 – solar handled 61% of it

#44
post #11

Earlier quoted context omitted.

i wonder if ppl's electricity consumption habits will change in response to this, idk like turning the heat way up during the day or using high power appliances more during the day

> idk like turning the heat way up during the day That is something you can reasonably do, but it's only useful in winter. > or using high power appliances more during the day Well, given that people have to work during the day, I doubt that that will work out on a large enough scale. And even if you'd pre-program a laundry machine to run at noon, the laundry would sit and get smelly during summer until you'd get hom…

I've got solar. We switched things like pool pump, hot water and so on (things already on timers) from night to day.

Dishwasher can also gave a programmed start, so that can also shift from after-dinner to after-breakfast.

I also work some days from home, so other activities can be moved from night to day. We use a bore-hole for irrigation, laundry in the morning etc. Even cooking can often be done earlier in the day.

Aircon is the least problematic- when we need it, the sun is shining.

So yes, habits can shift. Obviously though each situation is different.

Re: US electricity demand surged in 2025 – solar handled 61% of it

#45
post #4
post #3

Solar can be deployed by hundreds of thousands of individual efforts and financing at the same time, with almost no bureaucracy. It starts to produce electricity basically the same day. I can't imagine anything being able to compete with that for speed and scale - or costs, for that matter. Once deployed it's basically free.

The issue is that works perfectly well when solar is a small % of the grid, but when that number grows, then you need grid scale solutions and coordination for things to continue working well. And that requires both technical skill and political will.

You are not wrong.

The Australian grid shows that when solar is the dominant part of the grid, it can still work pretty well. But you need to plan for when the sun is not shining and adapt to the notion that base load translates as "expensive power that you can't turn off when you need to" rather than "essential power that is always there when needed". The notion of having more than that when a lot of renewables are going to come online by the tens of GW is not necessarily wise from a financial point of view.

That's why coal plants are disappearing rapidly. And gas plants are increasingly operating in peaker plant mode (i.e. not providing base load). Also battery (domestic and grid) is being deployed rapidly and actively incentivized. And there are a lot of investments in things like grid forming inverters so that small communities aren't dependent on a long cable to some coal plant far away.

The economics of all this are adding up. Solar is the cheapest source of energy. Batteries are getting cheap as well. And the rest is just stuff you need to maintain a reliable energy system. None of this is cheap but it's cheaper than the alternative which would be burning coal and gas. And of course home owners figuring out that solar + batteries earn themselves back in a few short years is kind of forcing the issue.

Australian grid prices are coming down a lot because they are spending less and less on gas and coal. The evening peak is now flattened because of batteries. They actually have negative rates for power during the day. You can charge your car or battery for free for a few hours when there's so much solar on the grid that they prefer to not charge you than to shut down the base load of coal/gas at great cost. Gas plants are still there for bridging any gaps in supply.

Re: US electricity demand surged in 2025 – solar handled 61% of it

#46
post #41

I've thought about installing solar panels on my roof for years. But when I factor in installation costs, it never makes sense because the local energy rates are pretty reasonable... Also, I live in Southeast, a place with plenty of sun but nowhere near the Southwest. Solar panel prices fell hugely in the past years. Is there anything that could significantly reduce installation costs?

PV is wildly expensive in the US.

Apparently you even need a permit from the grid operator for it.

Here in NL they come to your house a week after you call and your panels are up and connected in 4 hours or so.

Re: US electricity demand surged in 2025 – solar handled 61% of it

#47
post #41

I've thought about installing solar panels on my roof for years. But when I factor in installation costs, it never makes sense because the local energy rates are pretty reasonable... Also, I live in Southeast, a place with plenty of sun but nowhere near the Southwest. Solar panel prices fell hugely in the past years. Is there anything that could significantly reduce installation costs?

Yeah solar viability is highly dependent on your local conditions and electricity costs. Also on your utility’s buyback program.

I have low electricity costs, no time of use pricing, and I don’t think I can sell back. I also live in a very cloudy city. So solar doesn’t make much sense!

Re: US electricity demand surged in 2025 – solar handled 61% of it

#48
post #4

Earlier quoted context omitted.

The issue is that works perfectly well when solar is a small % of the grid, but when that number grows, then you need grid scale solutions and coordination for things to continue working well. And that requires both technical skill and political will.

You are not wrong. The Australian grid shows that when solar is the dominant part of the grid, it can still work pretty well. But you need to plan for when the sun is not shining and adapt to the notion that base load translates as "expensive power that you can't turn off when you need to" rather than "essential power that is always there when needed". The notion of having more than that when a lot of renewables are…

When you say 'Australian grid prices are coming down a lot' I don't think you're talking consumer prices.

I don't have the exact 'before' numbers on me, but our peak electricity costs went up from around 42c/kWh to 56c/kWh around 18 months ago.

At the same time that feed-in was halved from 4c/kWh to 2c. Having said that, I'm pretty sure 'Shoulder' and 'Off-Peak' went down slightly.

(I'll update this when I can access my spreadsheet with the actual numbers and dates)

I should also say that I'm fairly insulated from this price rise having recently gotten a battery installed, plus moving to a special EV plan, so I charge the car and the house battery at the very cheap off peak rate (special for EV owners) and run the house entirely off battery, topped up with solar.

It's a privileged setup, but one that I planned and worked towards for a fair while, having seen ever increasing electricity prices always on the horizon (even before AI started eating all the resources).

Re: US electricity demand surged in 2025 – solar handled 61% of it

#49
post #3

Solar can be deployed by hundreds of thousands of individual efforts and financing at the same time, with almost no bureaucracy. It starts to produce electricity basically the same day. I can't imagine anything being able to compete with that for speed and scale - or costs, for that matter. Once deployed it's basically free.

A lot of the opposition to it is vibes based at this point.

Big industrial projects. Big power plants. Big finance. Real men.

It’s silly. If you want a real men trip get into body building and MMA or something and use solar power.

Re: US electricity demand surged in 2025 – solar handled 61% of it

#50

Earlier quoted context omitted.

You are not wrong. The Australian grid shows that when solar is the dominant part of the grid, it can still work pretty well. But you need to plan for when the sun is not shining and adapt to the notion that base load translates as "expensive power that you can't turn off when you need to" rather than "essential power that is always there when needed". The notion of having more than that when a lot of renewables are…

When you say 'Australian grid prices are coming down a lot' I don't think you're talking consumer prices. I don't have the exact 'before' numbers on me, but our peak electricity costs went up from around 42c/kWh to 56c/kWh around 18 months ago. At the same time that feed-in was halved from 4c/kWh to 2c. Having said that, I'm pretty sure 'Shoulder' and 'Off-Peak' went down slightly. (I'll update this when I can access…

That’s just the stickiness of prices, not a problem with solar.

Inflationary money is basically an ugly hack to allow prices to fall without falling.

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