Im a family of 4, all electric, geothermal, central ohio climate.......and I am usually ~1300kwh in the spring and fall when very little HVAC is needed. ~1700-1800 in the heat of the summer and peak AC loading. And ~2300 in the coldest months of the winter.
I do run some rope LED lights, a waterfall pump, and leave the front LED porch light on that total ~250w.........or about 180kwh per month. Thats about the ONLY think I could eliminate to conserve energy if I truly wanted to.
My shop is on a separate meter. Im only at my shop on average 1-2 times a week. With ONLY a fridge, and a 175w dusk to dawn running when Im not down there......I still hit 5-6kwh per day. So dont understand how a WHOLE home with SEVEN people can live on ~13kwh/day unless everything is a gas appliance and the ONLY thing your electric does is lights and a fridge
Speaking from personal experience, you might want to consider buying yourself a new shop fridge. Our electrical bill went down by about 40% replacing the house fridge with a new one, and then another 40% when we replaced the freezer. Both of the new units were bigger, too.
What happens when all the Tesla owners arrive home at 6pm during nov-feb when it is dark and plug those in all at once? How is some going to offset that?
I don’t see batteries as the solution at least not today’s. Nor tomorrows. Do you know what rare earth and materials go into those? Or how they are disposed? Have you seen the cost to replace the battery bank in an ev and can you extrapolate to replacing a power wall? Talk about UNsustainability!
Electric vehicles charge when they are programmed to. Almost all of them charge when the rates are lowest, as in midnight around here.
Battery technology and chemistry is still evolving; you should check the recent announcements from Ford, GM, and VW, who are sourcing different materials from around the world (US, Canada, and China), some of them with differing technologies. The value of old batteries hasn't escaped others either. There are lots of folks working on optimal ways to recycle, in the same way folks are working in recycling old wind turbine blades. For both, you need enough old ones to run a business. Early days.
Replacing a Powerwall is just disconnecting three wire nuts, a connector, lifting the old one off, hanging a new one on the old bracket and reconnecting the wires; currently that would run you around $7,000, but every Powerwall ever made is still under the original ten year warranty, so it won't be happening anytime soon. The only hard bit is lifting the Powerwalls on and off as they weigh about 275lbs. Fortunately there is a tool for that.
For perspective, a Powerwall is a 13.4kWh battery. A Nissan Leaf with the big battery option is 60kWh, and a Ford Lightning E-150 is 98kWh or 131kWh in the extended range version. I.e. the extended range E150 has about ten times the capacity of a Powerwall.
@Beeenvenue I agree the tariffs and regulations are evolving, and something to definitely bear in mind. I would add that Power companies are generally out there to look out for themselves, so I think an expectation that their tariffs will escalate for everyone is to be expected. Locally, the turf battle has started, and something will get done to charge all users for the fixed costs of the grid, solar included. The current per kWh grid fees aren't going to cut it. What the tariff looks like and how much it ends up for each of us individually is going to be very, very local, and absolutely unknowable today. No power company sets a fixed 25 year tariff, and rightfully so. They don't know the future either.
All the best,
Peter
