Further, the problem doesn't show up at 20% in any significant way. In fact, the entire business model is adjusting to variable generation, even if enhanced grid buildout is going slower than planned.

Curtailment is a fact of life in energy generation. There have been periods of wind curtailment in Texas and and the Pacific northwest even with minimal penetration. Mostly due to transmission issues, but in the Bonneville Power Administration, federal regulation just ruled that BPA must not curtail to the extent they have.

Germany has also had minor curtailment periods, and while companies may wish for better efficiency within the system, it gradually changes to meet the circumstances.

We've actually come a long way from 8-10 years ago, when utilities didn't want to hook up more than a few percent, because of perceived problems which turned out not to exist.

or that the entire project gets scubbered when people revolt against ever increasing electricity prices.

Latest surveys here show that Germans willingly would pay more to support a renewable-powered grid.

"Life shrinks or expands in proportion to one's courage." - Anaïs Nin