pause charging at peak hours

That's quite a selfish answer, there is nothing wrong in being environmentally responsible with your power usage and rather shameful not to when your devices are capable of regulating charging. Personal benefit, doesn't enter into it, I am still going to be able to pay my bills this winter.

While I initially focused on the 2 hours of peak demand between 5 and 7 pm. with Macs having a 20 hour+ battery life. Charging could be restricted to say between midnight and 7am. This is when demand is lowest on the grid and often renewable energy such as wind has to be curtailed (the turbine has to reduce eectricity production) since the grid has reached it's capacity for renewable energy as grid stability must be maintained.

Time management is simple but its also possible to smart charge when there is more renewable energy on the grid and reduce the use of legacy fuels like oil, gas and coal. This can go beyond your mac and into your home with homekit scheduling smarter use of power. This could mean taking a higher charge when renewable energy is more plentiful and less when it's scarse.

If you embrasse the use of recycled materials and power efficient processors as Apple does and so does it's customers. Why should the environmentally sound approach end at the factory gate, why not extend it through the products lifespan?

Our children and grandchildren need us to adapt smarter sustainable practices. There is no need for us to micromanage charging when the device is capable of doing it itself with no user intervention.

very little power but i can tell you that i automated it at the socket and for the 2 hours its off my power usage dropped by about 50 watts for 2 hours so thats a 100 watts a day or 36.5 kw a year for me. How many macs are there ? How inconvienient was it not at all my mac doesn't need to thottle back when it's on battery. Ok it's going to have to recharge but taking it off peak means a lower price (its a small saving for most people 0 hardly worth doing for one mac, but a million macs charge smarter we reduce our carbon foot print just a little bit. It's actually good for the devices, i'm into home automation so i am in quite a few groups and a lot of people will wall mount a tablet to show thier dashboard and a fair few find the batteries swell up and push of thier displays. 24/7 charging isn't great ( granted many of these devices are android).

If the device is capable of smartly controlling its charging rate why not have it do it optimal times that are good for the environment? It's basically a simple saving that yes on an individual basis makes little difference but it adds up when its a feature of the OS and all macs are doing it.

from the pdf linked, Thankyou.

"We continue to make progress in reducing Apple’s contribution to climate change—by focusing

on making energy-efficient products with renewable or recycled materials and with renewable

energy. An increase in suppliers’ use of renewable energy through our Supplier Clean Energy

Program helped reduce the product’s carbon footprint by 7 percent compared with the previous

generation.4 Apple is committed to using carbon life cycle assessments to identify opportunities

to drive down product greenhouse gas emissions"

same page gives 22% of the emmisions is from using the product. Peak time power uses some of the worst fuels for carbon emissions at the highest price. Wholesale electricity prices for peak mean the retail electricity companies make a loss at peak times and have to charge more at a higher margin for the rest of the day. So time of day and fuel mix sensitivity charging is an easy win, and if apple do it PC manufacturers will follow.