[The following is excerpted from a recent, on-line discussion]
JBG: •THE CHALLENGE TO INTEGRATE RENEWABLE – WIND and SOLAR – ENERGY ON GRID… We have to have security and resources to accommodate Wind and Solar output variation. A Smart Grid with high concentration of renewable energy will require simultaneous consideration of the system’s rapid response and long term evolution.
Renewable and Generation Distributed bring constraints on resource availability, that the current Grid were not designed to address.
Addressing these constraints will require new efforts at coordination of resources and capabilities within the electric grid, both to mitigate difficulties and to maximize benefits. Built to provide energy from different sources for various loads through a single large interconnected infrastructures.
The system requires active control, in real time, the resolution of control in Space and Time is limited by extant technology and design philosophy.
-Energy storage and Demand Response;
-Stability and Oscillation;
-Seasonal, hourly and instantaneous dispatch.
Intermittent, what we still do not know…
-How much advance warning can we get before rapid variations in Solar and Wind output, and how we can use this information effectively.
-What is the point of intermittency of renewable energy that can cancel the high penetration levels, locally and around the system.
-How quickly will vary from aggregate production for large and diverse collections of resources for Solar and Wind.
To manage all these variables the Utilities will have to build a sophisticated information technology infrastructure, and to do this will develop knowledge and expertise worthy of the area of IT.