The solution:demand has already been shaped. Once EVs replace ICEs almost entirely, the demand shape will be complete... ie, you'll have no choice but to use EVs, at which point they will charge whatever they like. They don't care if you store the energy or not, as you'll be charged for what is delivered to your battery.
Electric smart meters can be made to know what they're charging, if the government so chooses. The electronic device you're currently using to view this post has long had the ability to identify the exact make and model of any components connected to it, along with various other data about it. The two products talk to each other. This is so easily implemented in a charger-battery setup, I'm surprised it's not already widespread.
As for charger upgrades being unnecessary - It's easily done, especially under the auspices of a standardisation policy. Updating cars out of warranty is as easy as sending an email, essentially, as it's a remote software update - You don't need to bring the car in, they don't need to get a mechanic to open it up, it just gets sent to the car.
And you're very wrong about EVs not being taxed per kWh - Water, gas, electricity, food, personal services and millions of other things in life are all charged at unit rates, regardless of end use. Any taxation is a percentage of that unit rate, which is what makes it a fair taxation based on usage - You use more, you pay more.
The solution:demand has already been shaped. Once EVs replace ICEs almost entirely, the demand shape will be complete... ie, you'll have no choice but to use EVs, at which point they will charge whatever they like. They don't care if you store the energy or not, as you'll be charged for what is delivered to your battery.
Electric smart meters can be made to know what they're charging, if the government so chooses. The electronic device you're currently using to view this post has long had the ability to identify the exact make and model of any components connected to it, along with various other data about it. The two products talk to each other. This is so easily implemented in a charger-battery setup, I'm surprised it's not already widespread.
As for charger upgrades being unnecessary - It's easily done, especially under the auspices of a standardisation policy. Updating cars out of warranty is as easy as sending an email, essentially, as it's a remote software update - You don't need to bring the car in, they don't need to get a mechanic to open it up, it just gets sent to the car.
And you're very wrong about EVs not being taxed per kWh - Water, gas, electricity, food, personal services and millions of other things in life are all charged at unit rates, regardless of end use. Any taxation is a percentage of that unit rate, which is what makes it a fair taxation based on usage - You use more, you pay more.