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Sweden - Saving Money by Using Electric Vehicles to Power Homes
Posted on 6/18/26 at 2:02 pm
Posted on 6/18/26 at 2:02 pm
TL/DR - Software controls bidirectional charging the cars during cheaper off-peak periods and drawing from them during high-demand stretches or blackouts.
https://www.thecooldown.com/green-tech/electric-vehicles-energy-savings-hudiksvall/
quote:
In a housing association near Hudiksvall, eight families reportedly connect their EVs to a shared energy setup that lowers electricity bills and can help supply backup power when demand jumps or the grid fails.
According to AFP (h/t Tech Xplore), residents in the small Swedish community are using electric cars to send electricity back into their homes. That gives the families access to the energy stored in the vehicles when household power needs rise.
quote:
Software controls when that energy moves, charging the cars during cheaper off-peak periods and drawing from them during high-demand stretches or blackouts. The system relies on bidirectional chargers, which make it possible for the vehicles to run appliances, lighting, and other electrical systems in the flats.
Resident Filip Kiltorp explained how the system works in practice.
"We use the cars to power our homes when our energy demand is high," he told AFP. "Living here is undeniably cheaper. We use the same amount of electricity as other homeowners, but our bill is much lower."
AFP reported that the homes also share a heat pump and use rooftop solar panels along with stationary battery storage.
https://www.thecooldown.com/green-tech/electric-vehicles-energy-savings-hudiksvall/
10
Posted on 6/18/26 at 2:04 pm to Shexter
I guess the most popular car there will soon be a Charger?
Posted on 6/18/26 at 2:05 pm to Shexter
How hot does it get during the summer?
Posted on 6/18/26 at 2:05 pm to Shexter
Meanwhile here in Texas it's 92 degrees outside and my air conditioning is set to a frosty 67 degrees because God Bless America.
Posted on 6/18/26 at 2:06 pm to Hangover Haven
quote:
How hot does it get during the summer?
66F - June
71F - July
69F - August
The average temperature in the summer months, absolutely blazing
This post was edited on 6/18/26 at 2:08 pm
Posted on 6/18/26 at 2:07 pm to Shexter
Posted on 6/18/26 at 2:08 pm to Shexter
I'd pimp out my wife's Tesla's battery for a virtual power plant program if I could. Utilities are paying $2-3 per kWh per month to people on those programs for home batteries.
Posted on 6/18/26 at 2:08 pm to bad93ex
quote:+
The average temperature in the summer months, absolutely blazing
Pretty easy to power your home in that climate...
Posted on 6/18/26 at 2:09 pm to Hangover Haven
quote:
Pretty easy to power your home in that climate...
Also...
quote:
Sweden generates approximately 99% of its electricity from clean sources, primarily hydropower, nuclear energy, and wind power.
Breakdown of Power Sources:
Hydropower: Contributes over 40% of Sweden's electricity. The country has abundant water resources, making hydropower a significant part of its energy mix.
Nuclear Energy: Accounts for about 27% of electricity generation. Sweden operates several nuclear power plants, which are crucial for maintaining a stable energy supply.
Wind Power: Represents around 25% of the electricity supply. Wind energy has been rapidly growing, with over 4,700 wind turbines installed across the country.
Biofuels: Contributes nearly 5% to the energy mix, primarily used for heating and electricity production.
Solar Energy: Accounts for about 2% of the total electricity generation, with ongoing efforts to expand its use in the energy mix
Posted on 6/18/26 at 2:15 pm to Hangover Haven
quote:
Pretty easy to power your home in that climate.
Climate isn't that big of a deal. There's millions of homes with batteries across the US that are doing the same thing and some of them are getting paid by utilities for access to a percentage of their storage to export to stabilize the grid during high demand events.
Posted on 6/18/26 at 2:16 pm to Shexter
It seems the savings are coming because the cars only get a charge during off-peak hours, but during peak hours, the house actually pulls from the car. It's just a shell game. No electricity is being saved, the house is simply drawing more of its power during low-cost hours to store and re-use during the high price hours- using the car as a battery bank instead of a much lower cost traditional battery bank.
So they must all have smart meters from the power company that charge them different rates depending on the time of day.
So they must all have smart meters from the power company that charge them different rates depending on the time of day.
Posted on 6/18/26 at 2:18 pm to Shexter
I’m gonna go ahead and say those batteries are not set up for that with pulling a much higher amount of energy.
I’m betting the batteries don’t last long and have to be replaced
I’m betting the batteries don’t last long and have to be replaced
Posted on 6/18/26 at 2:19 pm to deeprig9
quote:
It seems the savings are coming because the cars only get a charge during off-peak hours, but during peak hours, the house actually pulls from the car.
Its just rate arbitrage.
quote:
No electricity is being saved
Some is actually lost in the round trip conversion.
Posted on 6/18/26 at 2:20 pm to billjamin
quote:
Climate isn't that big of a deal. There's millions of homes with batteries across the US that are doing the same thing and some of them are getting paid by utilities for access to a percentage of their storage to export to stabilize the grid during high demand events.
I priced out a system recently for a singlewide trailer, solar panels have come a long way. With just the footprint of the roof of a standard single-wide, you could easily go off-grid for about $20k and have water heater, fully operational kitchen, washer dryer, AC, heat pump, as long as you didn't try to run all your appliances at the same time. And that's only when the sun is shining. Spend another $20k for the battery bank system to keep you running through the night.
Posted on 6/18/26 at 2:22 pm to Fat and Happy
quote:
I’m gonna go ahead and say those batteries are not set up for that with pulling a much higher amount of energy.
I’m betting the batteries don’t last long and have to be replaced
I'm gonna go ahead and say that saving $100/m on your electric bill by using a $70k car has an ROI of 58 years. That's if the car and battery last 58 years.
Posted on 6/18/26 at 2:23 pm to deeprig9
quote:
I priced out a system recently for a singlewide trailer,
If you seriously consider it get a structural review. Trailers sometimes have problems supporting the weight. I make all manufactured homes get a structural engineers letter.
quote:
Spend another $20k for the battery bank system
You can get them for significantly less now. for 20k you could get well over 20kWh of storage that would make you fully off-grid capable as long as you had an appropriate amount of solar to recharge it. 1 PowerWall should be about 14k installed and that comes with a PV inverter and 13.5kWh.
This post was edited on 6/18/26 at 2:24 pm
Posted on 6/18/26 at 2:23 pm to Shexter
Our utilities companies wouldn’t allow it. They’re already fighting the use of portable solar setups the Europeans setup on their apartment porches.
Posted on 6/18/26 at 2:37 pm to Shexter
My power wall is powering my house right now as this storm knocked the grid offline.
Posted on 6/18/26 at 2:39 pm to Hangover Haven
quote:
How hot does it get during the summer?
Maybe more of an electric heating expense.
quote:
Winters are characterized by short daylight hours and sub-freezing temperatures, with the northern mountainous regions often dropping below -22°F
Posted on 6/18/26 at 3:00 pm to Hobie101
quote:
My power wall is powering my house right now as this storm knocked the grid offline.
Do you have it on a VPP program?
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