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this post was submitted on 12 Jul 2024
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No Stupid Questions
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Hopefully getting their own solar panels
I hear you, but a solar set up with batteries for a house in TX is often well over $100K. It's not easy for most of us to pull that off, even with financing. And it's not an option at all for renters.
that’s ten times what it costs to install domestic solar, battery storage across all of Europe including major cities. Why is it so expensive? Panels are ~$200 each online and an inverter is $5k for a really good one.
A quick google search shows prices more in line with my expectations (sources: https://www.forbes.com/home-improvement/solar/solar-panel-costs-texas/ and https://www.energysage.com/local-data/solar-panel-cost/tx/)
In Texas, you must also have enough battery power to run your HVAC for at least 12 hours, which is extremely expensive here (~$80k est. for my moderately-sized home), given how hot it is. Without a substantial battery system, you will lose power when everyone else loses power.
My $100k approximation is what I was quoted by multiple solar and battery installers here and is also in line with what my local friends, family and colleagues have paid for their systems.
As an anecdote of what happens if you don't have enough battery storage: One of my close friends who has a whole-home system (2300 sqft home) actually still had to keep his HVAC turned off on day 2 of the recent derecho outage a few months ago because his $125k battery system could not store enough power due to cloud cover. They took out a second mortgage for that solar/battery system in 2023. He still loves the system and it mostly works fine, but it's not perfect and it was still $100k more expensive than a 24kw Generac natural gas generator.
So, if you can find a vendor that can install solar and battery storage for a system that can keep our HVAC going in one of our multi-day outages here, please send me their information! I will definitely call them and get an estimate!
Thats not gonna be the minimum, its a sliding scale of how much solar you can afford.
When you include enough battery storage to keep your HVAC working without interruption, the price becomes extremely high. I was not able to find anything less than about $100k installed here that could cool a 1500-2000 sqft house for a half day.
Crazy thing about AC, its power draw lines up perfectly with solar production, you dont need much storage to run it.
That is simply not accurate in south Texas. It's 90 degrees at midnight with 80% humidity. You need a great deal of storage.
Also, the system needs to over-produce and store that excess energy during the day so you can continue to run all night. If there is heavy cloud cover, you will also be relying on that storage during the day as well.
Im seeing lows in the 70s. If theres heavy cloud cover you wont need as much AC. Texas summers are ideal solar scenario
Where?! Austin?! Haha. Just stop. Our lows are in the high 80's on a good day in the summer! Usually, that low happens at 4 am and is only that temp for an hour or two. At midnight, the temp is usually about 90. Also, humidity is extremely high, making our temps much more deadly. So, just stop. You definitely, definitely do not know what you are talking about.
Also, you can't just turn off your AC when there's cloud cover and easily get your house cooled back down when the sun comes back out, as you are implying. It takes a great deal of energy and an over-powered HVAC system (which no one has) to cool a house quickly when the sun is out.
I'm not sure what you are doing right now. Is your goal to try to convince me, a resident of this place who has tried for years to afford a solar system, to embrace a solar solution? I already want one. If you know of a vendor in south Texas that can install what's needed to keep me and my family alive when the power goes out for the low prices you claim, please let me know who they are and I will call them!
Until then, I will just have to make do with my Generac natural gas generator that can run everything when the power goes out. That solution only costs $15k installed. There's a reason people get whole-home generators instead of off-grid solar here. That reason is very obviously price. One day I hope to afford a solar solution (panels/batteries/installation) that can keep everything running when we lose power for several days at a time, but as of today, that is at least a $100k investment for a 1500-2000 sqft home.
You know i can look up weather online right? Im in Mississippi, im all too familiar with humidity and muggy nights, ive lived without AC in the summer, i know its not comfortable temps at night, or during cloud cover. But its much lower temps than midday sun and the AC has to run a lot less to maintain desired temps.
Neat.