RNE has a look at the increasing penetration of renewables for power generation, demonstrating they pose no issue for grid stability - The Myth Of Renewables Threatening Grid Stability.
Germany’s power grid outage averaged 12.7 minutes last year, 41% less than in 2006, even though renewables have grown to account for as much as a third of power generation in the country, according to data released by the federal regulator last week.
This put to rest concerns about intermittent sources of power threatening grid stability. The country is weaning itself away from nuclear power and embracing renewables generation, providing a working model of transformation of the energy sector for many other countries. ...
Meanwhile, there are countries that are still stretching their clean energy targets. Morocco wants to increase the proportion of energy consumption from renewables to 42% by 2020 and up to 52% by 2030, by when it aims to have 10.1GW of renewables – 4.6GW of solar, 4.2GW of wind and 1.3GW of hydro power.