Wow, wow oh wow oh wow. That’s the first response when examining the figures.
Let’s have a quick recap of what we are talking about here…
Last June, we installed our third and final solar system. This one at home. We used micro inverters although we have zero shade and we had a 9.6kw battery storage system as well. We won’t be talking products here, just results.
OK, the original calculator i used to size my system told me i would generate around 3950kwh a year. As of today 15th May 2019, 50 weeks after install we have generated 4350 kwh. If we have good skies for the next two weeks, we will hit 4500, considerably more than quoted.
Also, we never took a feed in tariff, so all these numbers are genuine savings….
In the 50 weeks since install, we have used a total of 4400kwh. This includes charging the electric car.
Now it would be great if we could use all of the energy from the solar, but that’s not possible unless you were a really high energy consumer, so the battery stores excess during the day for us to use later, after sunset.
We have so far taken around 1600kwh from the battery and used that in the house. This would normally have gone to the grid. The unit cost from my energy company is 15.5p/kwh so the battery has helped me save an extra £248 on top of what solar we used during the day.
To dates, we have taken just over 1850 from the grid for the 50 weeks. That equates to just £286 for the year in electricity costs.
We live in a 500 yr old, 12 room house with 3 adults at home most days. we drive an electric and do not worry about power cuts.
Our total motoring and household electricity costs are around 78p a day.
Let’s talk…..