After decades and hundreds of billions of dollars, how much of Germany’s energy is supplied by its solar and wind? Based on data from International Energy Agency, here is its latest report with slightly older data: http://bit.ly/1jG8YQu
In that report they say:
In order to achieve the ambitious energy transformation set out in the Energiewende, by 2030 half of all electricity supply will come from renewable energy sources; Germany must continue to develop cost-effective market-based approaches which will support the forecasted growth of variable renewable generation. Furthermore, the costs and benefits need to be allocated in a fair and transparent way among all market participants, especially households.
They have a very, very long way to go to reach 50% penetration at the current rate of implementation at ~15%. The 2030 goal is a pipe dream.
And who in there right mind wants 50% of their electricity supply based on intermittent sources? If the sun is obscured by clouds and the wind doesn’t blow, that 50% can quickly shrink to just a few percent on the vagaries of wind and weather. The whole concept is flawed, IMHO.