It's a bit hard condensate the concept in an HN comment but I'll try:

- the "Green" new deal, originally have imagined (with a classic managerial fallacy) a world made up by single-family homes in places with enough Sun for p.v., BEVs, a little need to move and no industries. Perhaps because this is the way some manager's live and they call it sobriety respect of others who do differently. Than they discover people's in crowd then to behave in stupid ways, like Le Bon describe in his masterpiece BUT not that stupid so grid-connected p.v. without stationary and/or on-wheel storage because cutting electricity bill with p.v. for a significant amount of locations on earth pay back, the rest do not. As a result electricity grids are more and more unstable. Keeping the frequency is always hard and we have chosen to made "large enough" grids to have a "slowly changing mean load" slow enough that big power plants can keep up the frequency; when p.v/eolic start to be big enough the power peaks they produce make's the grid frequency skyrocket or fall too fast for large power plants to lower/step up their generator power. Not counting the fact that most people do not live in single-family homes where a p.v. system and an on-wheel battery can live with;

- some politicians who have blindly follow the initial vague dream have decided the answer is "reduce energy consumption" and have even invented ways to reduce it who actually increase the amount of consumed energy like regulating "how many hour to run the heating" vs "let the system run quietly 24/7;

- since most people DO NOT live on nor have p.v. anyway most home appliance are NOT designed to maximize self consumption witch means run full power as quick as possible when energy from the Sun is available vs try to spread the load as much as possible to keep the grid load as stable as possible. As a result most p.v. systems instead of target maximizing self-consumption target to produce as many kWh as possible. As a result p.v. systems are LESS interesting and the grid is more strained.

A simple example: most hot-water systems try to run few minutes every hours instead of all at once on input. To keep a grid load stable running few minutes every hours and have small quantity of water to heat is IDEAL, you consume less energy and keep the load stable on average. On p.v. it's the exact opposite. Since the Sun shine for limited period of time but when it do it offer much energy what it count is heating as much as possible large amount of water to have enough hot water for the rest of the day, possible for more than one day. Essentially NO system on sale offer such simple regulation, while some offer "grid-backed" regulations like grid energy meters who told "run" or "do not run" depending on current grid load but in ways that are hard to be used on p.v. even if they are very similar. Another example: most appliance start to consume from 0 to max in a snap. For the grid is not an issue, the single appliance consume a very small fraction of power of a power plant and on average that's just noise. Small p.v. inverters on contrary have issues keeping up such peaks, who happen to be big at micro-grid scale. As a result many appliance like ovens who try to use peaks to reduce the total amount of kWh consumed they run very bad on p.v. in self-consumption and inverter stress terms. Again: some appliance try to run for longer time to reduce the amount of peak power usage, while on p.v. it's better run quickly to run an appliance after the other in the limited amount of time the Sun shine and so on.

Long story short if some really want a new deal:

- ALL BEVs MUST have an open standard data port (no matter if canbus or something else) to talk to any p.v. inverter on sale allowing to do the same stationary battery inverters and batteries do: charge ONLY from p.v., offering power from battery to the home to a maximum DOD if the grid do work, another threshold if case of grid blackout and parameters to tell the car ensuring a minimum SOC for a certain point in time allowing to charge from the grid if needed;

- BEV need to cost equally of their correspondent ICE not pushing up ICE and fuel price to makes EV convenient;

- incentive de-urbanization in the sense from a multi-apartments building (sorry I do not know how to name such buildings in English) to a single family home if you live there for a certain amount of years;

- impose a simple and cheap communication mode to power-hungry home appliances like simple modbus to allow their control from a central home system, like a home server/a p.v. inverter etc and allowing communication to tell how much power they going to need to run, in the next few seconds etc to allow inverters compensate peaks less hardly;

- incentives the design of systems targeting maximizing self-consumption instead of grid-tied "metering" like "I give X kWh, get back Y and so...".

Asking for "sobriety" is like asking do not panic on a sinking ship, the rebound effect is higher then else.