Solar Utilization Rate

Can someone please explain what
"Solar Utilization Rate" means? There is a solar website that claims
that without their special home energy management system you get a 50%
solar utilization rate but you get 95% utilization rate if you install
their energy management system (no batteries).
It seems to me that it would be very, very difficult to achieve 95% utilization rate even with batteries let alone without batteries.
With batteries:
My argument is (maybe too) simple- A) Your solar array produces more energy on average than your house uses, then the battery will eventually charge to 100% and you will end up sending energy into the grid.
Your solar array produces less energy on average than what your house
uses and you will be drawing from the grid. C) Your batteries and
charger are never going to be 100% efficient, there will be losses when
charging and when discharging. That's with batteries....
Now without batteries:
If your array is creating less energy than your lowest draw circuit (i.e. pool pump uses 1Kw when the array is producing only 500 watts) then you either send the 500 watts into the grid or turn on the pool pump and draw 500 watts from the grid. With higher draw circuits such as an electric water heater drawing 3Kw, the waste is worse. So unless your array is creating exactly what you need to run a circuit you lose, one way or another.
Please tell me how you could get a 95% utilization rate without batteries.
Regards,
Bert
It seems to me that it would be very, very difficult to achieve 95% utilization rate even with batteries let alone without batteries.
With batteries:
My argument is (maybe too) simple- A) Your solar array produces more energy on average than your house uses, then the battery will eventually charge to 100% and you will end up sending energy into the grid.

Now without batteries:
If your array is creating less energy than your lowest draw circuit (i.e. pool pump uses 1Kw when the array is producing only 500 watts) then you either send the 500 watts into the grid or turn on the pool pump and draw 500 watts from the grid. With higher draw circuits such as an electric water heater drawing 3Kw, the waste is worse. So unless your array is creating exactly what you need to run a circuit you lose, one way or another.
Please tell me how you could get a 95% utilization rate without batteries.
Regards,
Bert
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Comments
With a battery based system without grid tie, you must be VERY wasteful having enough energy t full charge the batteries regularly and once full, you can use the energy fr opportunity loads or it just gets wasted with no storage available.
With batteries and grid tie, you still have to charge the batteries and you will have some penalty in the energy you store and use later. So grid tied will always be the best. I have no clue what 'optimizer' you are speaking off, but you are welcome to leave a link to it.
- Assorted other systems, pieces and to many panels in the closet to not do more projects.
I live off grid (No connection to the grid at all) and use simple timers and weather reports to optimize my energy use. I have charge controllers which will turn on items based on the state of charge on my battery as well.
So sunny days, I'll turn on my water heater...
Since you likely have a single unit which charges batteries or sends energy back to the grid, I would guess it works in a similar fashion. Turning on heavy loads when there is an abundance of power from the sun.
- Assorted other systems, pieces and to many panels in the closet to not do more projects.