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Cake day: January 2nd, 2024

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  • When people talk about “smart thermostats” in this context, they’re saying they want the utility company to be able to set the temperature in your house in exchange for pennies off your electric bill.

    By reducing the delta between peak and baseline energy demand, the utility can sell the power generating facilities that only run & earn income on the hottest/coldest days but which are a constant expense even when they’re not running (i.e. most of the time).

    The plan is to make poor people uncomfortable on the hottest and coldest days in order to lower everyone else’s electric bills.









  • The 97 per cent limit was chosen for a specific reason. During a demonstration, BYD chairman Wang Chuanfu explained that ending the charging process at 97 per cent is a deliberate energy-saving measure. The remaining three per cent is reserved for regenerative braking, which helps reduce the vehicle’s overall energy consumption.

    There are some good reasons for designing the system that way, but its irksome that its framed as an energy saving measure. The energy required to accelerate a vehicle is always greater than the energy that can be recovered through regenerative braking due to thermal and mechanical losses. Therefore, if you start driving on a flat road, you’ll create sufficient space in the battery as soon as you move.

    That last 3% charges slower, and BYD gains a competitive advantage by moving the goalposts to say that 97% counts as “full” because reasons.

    It does mean that a car charged on top of a mountain can still do one pedal driving on the way down. Consistency of how the car responds to pedal inputs is a safety feature.