With self-install solar panels, and a €150 plug-in adapter that feeds power directly into electricity sockets; a DIY home power system is becoming popular in Europe.
A plug-in balcony solar system for uncertain times.
It's still early days for this tech. Right now its maximum output is 800W, which is not a lot. OP mentions this delivering 3kWh on a typical day, about 10% of a typical US household's consumption.
But it's the direction of travel that is interesting here. This will get better, and cheaper. Then systems like it will be able to deliver 25% of daily consumption, then half. All with affordable systems you can install and set up yourself.
Many people have nightmares about dystopian and apocalyptic futures. I would feel safer in a world where electricity production was decentralized and could survive major disasters.
It will get cheaper maybe, but it's way more robust than what you're implaying:
OP mentions this delivering 3kWh on a typical day, about 10% of a typical US household's consumption.
Wow, this is much. If you are correct, a typical US household consumes two times the energy than a typical german household.
The last numbers I found where from 2021 with 5411 kWh for a household with 3 or more people.
a typical US household consumes two times the energy than a typical german household.
Can't even use a bit more powerful drill without blowing the fuses in some older european houses, because the old wiring is too weak.
Yeah that one made me whiplash as well. Jesus, we thought we blew out the meter at 17kwh in a shitty aussie rental during a brutal winter with oil heaters
I didn't know if it's correct, but consider that nanny (most?) use natural gas for heating, cooling, cooking, and got water, so those aren't Even counted!
I am very interested in this for hot summer days with peak demand or power-hungry appliances. I hope they come up with north american versions!
This particular type of home solar implementation runs into a scalability issue where each piece is hard-limited by the ampacity of the outlet its plugged into, so at a certain point it can only scale out to be plugged into more outlets and take up more space.
Also, having a system thay feeds into an outlet is quite scary, since the male side of the plug is energized. I get the convenience of this "plug and play" sort of device, but I'd much prefer to see something hardwired and enclosed.
Safety wise it's perfectly safe. The male end is only energized if it detects that it's actually connected to the grid, then it matches the sine wave of the grid. It can't just electrocute you if you unplug it and touch the exposed pins.
NEC allows for 20% of the main breaker for solar backfeded. Higher then that and you have to go for a line side tap and bypass the breaker box completely.
Huh, I wonder what the safety features are. From a skim of the article, it's detects power demand somehow, so maybe that helps.
Also, I'm concerned for linesmen, because somebody is going to buy this and not tell their company that they are energising the local grid, rather than just consuming. Europe apparently has some kind of solution, but nothing stops you from using it elsewhere.
Thanks for rewriting the title and make it straightforward ...as the original headline from "The Verge" was confusing and useless (for me).
To add to this tech, for places that don't get a lot of sun but gets some wind, here are some choices:
https://www.amazon.com/s?k=home+wind+turbine
They even have travel wind turbines which help power your phone. Glad to see all this tech out there.
The reviews on almost all of those wind turbines are terrible.
The turbines produce no power at all, they dont produce anything near rated voltage, they wildly exaggerate about total power or they have to be manually altered just to assemble. Sometimes its all of the above.
Home commodity wind isn't there yet.
I saw a review for one from that link that got destroyed... by wind. Not a good look.
These micro inverters are a cool near-term portable solution for those looking to dip their toes into home energy storage. Ultimately, I hope we see residential DC electrical become more commonplace soon. That will make the grid integration that this tackles a non-issue for most (i.e. those who aren’t selling their excess solar capacity) but will ultimately be simpler and more efficient for the grid as a whole.
The average home has only a few devices left that still use AC internally (mostly large or old appliances) and home storage systems lose energy to power conversion overhead in both directions at multiple stages. Since each conversion represents a loss of up to 20%, the AC standard introduces an increasing amount of unnecessary friction close to the point of delivery.
Illustration: if your home charges from the grid, that’s one conversion AC —> DC. If you then use that power to charge an electric vehicle, that’s two additional conversions AC —> DC —> AC —> DC (currently few EVs support DC charging unfortunately). If you then charge your laptop in the car using the official charger, that’s two more conversions AC —> DC —> AC —> DC —> AC —> DC. Altogether this requires about 3x as much power than necessary with residential DC electrical, since then the power can go from solar to storage to car to laptop without the need for power inverters.
What voltage of DC would you propose for the common household? Keep in mind that one good reason for alternating current is for safety. Higher voltage AC will allow your muscles to release if contacted. Higher voltage DC does not. Additionally, using higher voltage with either type reduces actual wiring cost in the walls to deliver similar wattage. I don't have the math on me for sure, but delivering 12vdc to every outlet would require much larger in wall cables... And that doesn't even touch the subject of voltage drop (with the exception that larger cables can mitigate this somewhat).
Well it’s not standardized yet to my knowledge, but for example if we used something like the USB-PD protocol it could be a baseline 5 volts, with device negotiated step up to 9, 12, 15, 24, 28, 36, and 48. Higher voltage isn’t out of the question; EV systems safely run closer to 400 and a number of home batteries range up to 600, but I’d be iffy on the idea of the average contractor putting that voltage in the walls of the average home.
It’s true the copper for longer, higher current, or lower voltage DC runs could get very expensive, but even without HV for distance, thoughtful distribution of storage to expected points of delivery would limit the number of heavy lines needed for current spikes.
Long short, I’m not talking about switching entirely from AC, or pumping DC power through existing residential circuits. I’m talking about adding a secondary system that’s a more integrated version of the ubiquitous portable power station / “solar generator” batteries. It would be a home modernization upgrade, similar to running Ethernet to PoE enabled jacks in each room, installing a fancy intercom system, or what have you.
DC voltage is considered safe (cannot penetrate human skin) up to 60 V.
So I would propose 80% of that, to leave some safety margin. That would be 48 V, which btw is also a multiple of 12 V, which is commonly used today.
I agree, all of this AC power was introduced to facilitate conventional power grid, but does not longer make sense in the context of solar power. An update would improve efficiency, and probably some other advantages, such as:
Back powering your house through an electrical outlet is hella risky. It's outright illegal in a lot of places too.
