Excessive reliance on renewable energy sources can threaten reliability of electricity grids.
Week of January 24, 2017 - that was when the lights nearly went out in Germany because bad weather slashed wind & solar power. Last available reserve fossil power plant was brought online to prevent a catastrophic power blackout.
Weather issues in Germany during Dec. 2016 and Jan. 2017 have revealed very serious weaknesses in long-term Energiewende plan. For the foreseeable future, adequate baseload and dispatchable power generation capacity will be required to insure 99+ % grid availability and robust stability despite episodic weather problems.
100% renewable energy sources + enormous grid storage capacity would be too expensive and cause unreliability; are not a future solution.
Need to determine the optimal mix of wind & solar, baseload and dispatchable power generation capacity, and grid electrical storage capacity that result in lowest-possible overall system cost consistent with reliable grids having 99+% uptime and great long-term stability.
Radiation-free ultralow energy neutron reactions (LENRs) could potentially provide CO2-free future distributed alternative power generation technology vs. building many more fission and/or fossil fueled power plants.