Yes with peak usage pricing a home battery makes a lot of sense. We have peak usage pricing as an option right now though we have not signed up for it. Our utility is actually offering rebates on home batteries as they see benefit in shaving off those peaks.

Ya running 100% off grid is very difficult with a house like this. They were not built with that in mind. If we had double insulated walls and optimized roof pitches etc it might be possible. But we would still need a ton of storage to get through the winter, say 1MWh?? Not practical today but maybe in future.

#solar #renewables

I want a battery like that!

With an additional car and a climate a bit colder than ours, usage is really not that extraordinary - and yes, 1 kW sustained usage with a couple of large fish tanks is probably to be expected.

We're currently looking to add a 10 kWh battery to our small (7 kWp) solar system as well as a 6 kW hybrid inverter, and we're debating whether to increase both solar and inverter capacity, or add more battery capacity instead (the budget is fixed, so something has to give).

Danish power distribution adds tariffs to peak usage times, so we have 4 hours in the morning and another 4 hours around dinner time where electricity is significantly more expensive, while being very cheap during off-peak hours at night.

I don't think we will get to a point where we run entirely on our own electricity, not even in the summer, but it would be nice to be able to operate on battery power during peak hours, and then charge during off-peak hours from either cheap grid electricity or our own solar panels.

We use 3-4 kWh during the peak usage hours in winter, which means that a 10 kWh battery is slightly smaller than needed, so right now I thing we are going with a bigger battery and live with our small solar system - it can easily charge the battery in the summer anyway.

It maxes out at 11.4KW. Our house is 100% electric and we generate about 80% of it on an annual basis. That includes 2 EVs charging regularly.

Yes 63KWh is a lot but the house is big and we are still in partial heating season here. It will drop to about 42 in the summer and peak at around 95 in winter. The average is right around 63 kwh/day.

Our residual consumption is around 1KW. Hard to get it much lower with computers, air handler, and whatnot plus a couple of 100gal fish tanks that require heat.

We have not opted for a home battery because we have net metering with 1 for 1 energy banking. So in essence BC Hydro is our battery.

Holy cow - that is quite the production, you have there. 12 kW inverter?

My first thought was that this was begging for at home battery, but then I saw the actual numbers - 31 kWh may be a bit over the top in order to cover your usage when there is no sun.

Is your home fully electric? - and isn't 63 kWh on a single day still quite a lot? Our home is fully electric and we also have an EV (doing around 45000 km a year), and we're using about 21000 kWh a year, or 57 kWh a day on average, and that includes winter months with a lot more usage for heating than now.