The limiting factor right now is the fact that we have about 6GW of coal (and I think about 2GW of gas) production that's always on (those plants primarily provide heat, electricity is a by-product)
We decreased coal by 25% since pre-pandemic [0] and coal is responsible for 70-80% of the total emissions [1] (I'd rather use ourworldindata but they only have data up to 2023), which corresponds closely to the 25% reduction of CO2 intensity of electricity generation. So for the 60g/kWh we are 30% of the way there (starting at 400g/kWh). We are currently _not producing_ enough renewables to do significantly more than putting coal (and gas) temporarily to 0.
> German electricity imports rose by stunning 23% compared to 2023
That's correct but also irrelevant, as we always had the generation capacity to produce the shortfall ourselves. And yes, we absolutely will need to have some fossil backup capacity. As long as we don't need it often it produces not much CO2 (it's just expensive, hence the capacity market will be required). But that is fine, that is what regulators are there for.
> The last year, the maximum price rose to almost $1000 per MWh
It was for exactly one hour. And yes, that might still be a problem, if you are on a spot-market rate. But it's also only one of 8440 hours.
> The proof is in the pudding. The German "green energy" transition has reached its practical limits.
Again: We haven't even reached the point of renewable overproduction (which is the least one would need for any storage solution to even be an option!). This year might be the first one where we will have significant amounts of time where we will have "solar+wind > load" conditions. And this year is, coincidentally, also the one when we will have significant amounts of grid-level batteries installed. And even a one-hour capacity would move your 1000EUR/MWh to 700EUR/MWh. Beyond that it's much harder to estimate, but I would be shocked if 6 hours wouldn't be enough to push that whole day below 500. Still not sure how valuable that is, it's one of 365 days.
[0] https://www.energy-charts.info/charts/energy/chart.htm?l=en&... [1] https://app.electricitymaps.com/zone/DE/all/monthly