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Re:Harnessing America's Heat Pump Moment by Reason077 on Saturday October 25, 2025 @01:49AM (#45701601)
Looks pretty good to me over 25 years. Not many safe/guaranteed investments that will reliably return 8% these days. And as utility rates will no doubt rise over time, savings in future years will be greater.
Re:Harnessing America's Heat Pump Moment by glxxyz on Saturday October 25, 2025 @01:53AM (#45701612)
Yes the people selling solar systems all factor in aggressive future electricity increases, it's best to also see how it looks with more conservative rate increases. By my calculation in a reply above with the interest free solar loan it's an 8% return over 14.3 years.
Re:Harnessing America's Heat Pump Moment by thelastgallon on Saturday October 25, 2025 @02:59AM (#45701865)
Residential electricity rates have risen fast across the US—more than 30 percent on average since 2020 and almost double the rate of inflation: https://www.wired.com/story/power-bills-in-the-us-are-soarin...
Re:Harnessing America's Heat Pump Moment by bluGill on Saturday October 25, 2025 @07:39AM (#45703056)
Very regional though - my rates have not gone up.
Re:Harnessing America's Heat Pump Moment by thelastgallon on Saturday October 25, 2025 @11:29AM (#45704637)
Electricity prices are going up nearly everywhere. Bitcoin and AI are a wealth transfer from everyone to the crypto/AI folks.

Wholesale electricity costs as much as 267% more than it did five years ago in areas near data centers. That's being passed on to customers: https://www.bloomberg.com/graphics/2025-ai-data-centers-elec...

Re:Harnessing America's Heat Pump Moment by geysersam on Saturday October 25, 2025 @08:11PM (#45707955)
That doesn't make any sense. Bitcoin miners get wealth from people buying Bitcoin, not from electricity customers. Same for AI. It's a wealth transfer from electricity customers to electricity producers if anything.

Most likely most of the increase is just temporary though. Electricity supply will increase to meet the sudden and unpredictable increase in demand.

Re:Harnessing America's Heat Pump Moment by Spivak on Saturday October 25, 2025 @07:58AM (#45703171)
It will be interesting to see if this will make natural gas a more attractive source of residential heating as the price has remained relatively stable over the past 20 years.

The push for electrification seems like it relies on us metaphorically drowning in excess cheap electricity and want somewhere for it to go but right now the opposite it happening.

Re:Harnessing America's Heat Pump Moment by ssuds on Saturday October 25, 2025 @10:17AM (#45704102)
>The price has remained relatively stable over the past 20 years

Not really, natural gas has immense exposure to geopolitics and the commodity markets: https://www.iea.org/commentaries/what-drives-natural-gas-pri...

There’s also the argument to be made (this has manifested in other countries) that as gas usage wanes and more homes electrify, nat gas costs will increase as the infrastructure costs are spread among fewer and fewer people

Re:Harnessing America's Heat Pump Moment by Marsymars on Saturday October 25, 2025 @11:52AM (#45704794)
> There’s also the argument to be made (this has manifested in other countries) that as gas usage wanes and more homes electrify, nat gas costs will increase as the infrastructure costs are spread among fewer and fewer people

This has kinda wonky incentives though - if your fixed costs for gas are high but your marginal costs remain low and for whatever logistical reasons you can't cut the gas connection entirely, then your motivations are to move as much of your heating load over to gas as possible.

Re:Harnessing America's Heat Pump Moment by Spivak on Saturday October 25, 2025 @03:11PM (#45706242)
I'm currently facing this dilemma when it comes to my new water heater purchase. The $/kJ actually delivered into the water difference is so significant despite gas being less efficient that I'm probably going to switch to gas. Electricity has gotten so expensive that even with an efficiency advantage it still loses on the order of $500-800 per year.
Re:Harnessing America's Heat Pump Moment by Marsymars on Saturday October 25, 2025 @03:24PM (#45706316)
Is gas actually less efficient? I haven't had to work out the math myself yet, but there are some very salient variables - e.g. what's the energy source of the electricity? If it's a natural gas power plant, you're looking at like 30-60% efficiency of gas->electricity in the first place. Are you looking a at a heat pump heater? If so, how much of its energy would be pulling heat from the house that needs to be replaced by the home's heating supply anyway?

This is the kind of thing where a carbon tax is great for sorting out the pricing to match the externalities.

Re:Harnessing America's Heat Pump Moment by Spivak on Saturday October 25, 2025 @04:12PM (#45706613)
You might be right, I'm just talking about "last mile" efficiency. I get electricity at $/kWh and gas at $/therm and then an electric heater is x% at converting that electricity into hotter water and a gas heater is %y. From what I can find y < x for water heaters on the market. But even despite that my $/therm is so low that it still comes out ahead.
Re:Harnessing America's Heat Pump Moment by Reason077 on Saturday October 25, 2025 @04:59PM (#45706908)
> ”Are you looking a at a heat pump heater? If so, how much of its energy would be pulling heat from the house that needs to be replaced by the home's heating supply anyway?”

Heat pump water heaters pull heat from the outside. Usually with a split outdoor unit, just like normal A/C and heat pump systems.

I’ve also seen models where the entire system (integrated storage cylinder for the heated water) is installed outdoors, but those are presumably meant for more mild climates.

In any case, they certainly don’t pull heat from inside the house.

Re:Harnessing America's Heat Pump Moment by Marsymars on Saturday October 25, 2025 @05:28PM (#45707130)
Thanks, that obviously makes more sense. (I think I was thinking about heat pump clothes dryers at the same time I was making that comment.)
Re:Harnessing America's Heat Pump Moment by Reason077 on Sunday October 26, 2025 @01:41PM (#45713746)
Heat pump dryers don’t cool the room either because they work in a closed loop. There’s no external vent removing hot air to the outside like a conventional dryer. So they pull heat from the room but also put it back in the room, and the overall effect is to warm up the room slightly.
Re:Harnessing America's Heat Pump Moment by caminante on Saturday October 25, 2025 @11:03AM (#45704441)
I skimmed the article (so forgive me if I'm off.) It appears to reference non-US markets and the parent was assuming US (my assumption).

AFAIK, the US has a mid-long outlook of gas oversupply. EU's market is broken and has 3x the price (c.f. Henry Hub v. TTF). I haven't seen any major forecasters predict reaching parity anytime soon. Hence, LNG export projects keep getting (over-)built to chase the arbitrage.

Re:Harnessing America's Heat Pump Moment by conradev on Saturday October 25, 2025 @02:51AM (#45701836)
I got solar for my parents in 2021 and the price increases were pretty aggressive recently: https://fred.stlouisfed.org/series/APU000072610
Re:Harnessing America's Heat Pump Moment by Ekaros on Saturday October 25, 2025 @02:41AM (#45701792)
Which to me is funny, when the electricity prices will clearly not rise when there is solar energy production from said panels. But might in other times.
Re:Harnessing America's Heat Pump Moment by glxxyz on Saturday October 25, 2025 @02:46AM (#45701816)
I think the argument is that on average people are buying heat pumps and EVs faster they are installing solar panels but it’s not completely convincing though, power stations can be added.

Further north where I am solar can only ever be a small component of total electricity generation due to the dark snowy cloudy winter months with close to zero solar generation for weeks on end.

Re:Harnessing America's Heat Pump Moment by adrianN on Saturday October 25, 2025 @03:38AM (#45702023)
Batteries for load shifting a few hours mitigate that quite a bit and are getting cheaper fast.
Re:Harnessing America's Heat Pump Moment by glxxyz on Saturday October 25, 2025 @09:06AM (#45703600)
The issue for me with batteries is that in the summer I can produce in a day much more than I can use, and in winter I consume a lot and barely produce anything. This is where net metering steps in- I can ‘store’ all of my excess summer consumption in the grid in summer and get credit for it in winter.

A cheaper smaller system right sized for summer consumption with a battery would have my second best option, but for me never showed any potential payback due to the fixed costs of installation and the extra battery costs.

Re:Harnessing America's Heat Pump Moment by adrianN on Saturday October 25, 2025 @01:18PM (#45705458)
Net metering is of course nice for consumers but it’s not sustainable for the grid operators.
Re:Harnessing America's Heat Pump Moment by glxxyz on Saturday October 25, 2025 @01:20PM (#45705471)
It is for a fraction of consumers- power companies and governments are well aware of that.
Re:Harnessing America's Heat Pump Moment by Reason077 on Saturday October 25, 2025 @05:03PM (#45706939)
Exactly. Not a sustainable/scalable policy.
Re:Harnessing America's Heat Pump Moment by glxxyz on Saturday October 25, 2025 @05:23PM (#45707090)
The point of my original post was that I’ve seen a much greater ROI on my own heatpump than solar, even though I don’t regret the solar installation. I wasn’t making any claims about sustainability/scalability of solar, just showing how it worked for me.
Re:Harnessing America's Heat Pump Moment by Reason077 on Saturday October 25, 2025 @11:18PM (#45708879)
My comment was regarding net metering policy, not solar itself. Solar is great, and even better (for you) if you have net metering. But it’s not sustainable or scalable for utilities to keep offering net metering, and ultimately it creates wrong/distorted market signals: an incentive to generate more electricity when it’s abundant and to use more when it’s scarce.
Re:Harnessing America's Heat Pump Moment by brianwawok on Saturday October 25, 2025 @02:08PM (#45705832)
I have never had a prime time surcharge so I can’t do that trick. Think it’s because my baseload here is nuclear.