Get the strategy right for integrating renewable energy into Indian grid

India has embarked upon a laudable and ambitious program to install 100 GW of solar PV plants and 60 GW of wind turbine plants by 2022. However, such a large scale addition of variable or intermittent generation in a system packed with inflexible baseload coal plants - expected to total to around 250 GW by 2022 - will pose a challenge to grid management. Tackling this will require some planning and course correction. 

Is there a precedent of any other country tackling such a high percentage of renewable energy (RE) in its overall mix? Even if simplistic, let’s consider the examples