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Gas powered plants are flexible and can be turned on or off as the system demands it. It is therefore - together with oil and hydro - very useful as top load, no matter if you are running lots of base load in the form of nuclear and coal, or intermittent in the form of solar and wind.
So even though just above 10% of Germanys electricity is from gas, it is an important part. North Sea gas is running out, UK and Netherlands that owns most of it and uses gas heavily can be expected to prioritise themselves. Pipelines through Ukraine has a political risk. LNG from US is expensive and also has a political price. So North stream it is.
Better alternatives would be pumped storage or otherwise try to eliminate the need for gas, but that is not the course Germany has set.
If you build a thermal plant (coal, oil, or nuclear energy with steam boilers and turbines), you run into a problem in that the components do not like to cycle from hot to warm to hot to warm. Thermal cycling like that causes them to wear out.
The solution to that is to develop a tariff or rate structure that encourages customers to use electricity during times when there is excess. For example, at night or on weekends, when traditional factories are closed. You end up with a situation where factories operate 24/7 because the cost of the overtime wages is offset by lower electricity cost. You encourage people to charge their electric cars at night "because the cost of electricity is lower then." But that is the result of how the rate structure is set up in order to protect the generating plant infrastructure.
Another way to approach it is to accept that the availability of electricity will vary depending on sunlight or wind, and to develop a rate structure that reflects that variability. Such a tariff encourages customers to deal with the variable supply by implementing demand management. Most factory operations, with the exception of certain types of furnaces (that do not like to be thermally cycled), can be curtailed or modified to align with variable electricity supply. Certainly most households can do the same thing.
The bottom line is that it is important to keep in mind that the idea of "base load" is an artificial construct that is in place primarily to protect a certain technology choice. That is why you need a natural gas supply: to protect the old-fashioned thermal plants that should now be retired.
For office buildings and utility the type of electric load can be an issue.
LED lighting is quite different from fluorescent lighting requiring load ballast.
The details of the engineering problem are more complicated than just achieving a sufficient net energy supply. The article mentioned above lists
IT sector electricity demand is expected to grow by 50 percent by 2030, reaching a total of 3,200TWh, according to a forecast that looks at the main - certain - IT technology developments and considers the progress and challenges on an electricity usage level.
Another way to approach it is to accept that the availability of electricity will vary depending on sunlight or wind, and to develop a rate structure that reflects that variability.
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