And we're integrating a lot of variable generation, wind and solar and things like that. (scientificamerican.com)
However, these global studies do not assess the ability of variable generation to meet real hourly demand within a single transmission region, nor do they calculate the lowest cost mix of technologies. (scienceofdoom.com)
The California Independent System Operator (CAISO)-- the electric system operator for most of the state — will also contend with the normal challenges of managing this complex system including: dry to moderate drought conditions in much of the state, an increasing amount of variable generation from renewable sources, and the challenge of importing about 23 % of its peak system load from sources outside CAISO. (eia.gov)