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Flywheels for Rapid-Response Regulation of Electricity Grid

COURSE NO: R01-007
Flywheels for Rapid-Response Regulation of Electricity Grid
Course Highlights

This online engineering PDH course describes a flywheel’s ability to follow a rapidly changing control signal in a way that the value of regulation from the flywheel is worth significantly more than regulation provided by generation plants. It documents a particular demonstration plant’s performance as a high-value regulation resource and the possible financial costs and benefits from a commercial flywheel storage plant used as a regulation resource.


Regulation of an electrical grid involves balancing electricity supply capacity with the minute-to-minute fluctuations of electricity demand.  The need for cost-effective regulation is growing rapidly as variable sources of power such as wind and solar power generation become more common.  Currently most regulation is provided by conventional thermal electric generation plants. These plants provide ‘up’ regulation by increasing output when electricity demand exceeds supply and ‘down’ regulation by reducing output when electricity supply exceeds demand.


An alternative to using generation for regulation is to use storage. The storage facility provides up regulation by discharging energy into the grid and down regulation by absorbing energy from the grid.  Notably, the rate of power from (or into) flywheel energy storage can change much more rapidly than output from thermal electric generation plants.  Generation plants’ output (up or down) changes by percentage points per minute whereas flywheels’ output can change from full output (discharge) to full input (charging) – and vice versa – within a few seconds.


This 1 PDH online course is intended for engineers working for electricity storage vendors, technology developers, system integrators and advocates, energy policymakers and researchers.
Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Understanding flywheels energy storage’s overall performance as a regulation resource
  • Knowing the advantage that flywheels have over generation for regulation
  • Understanding the methodology for evaluating flywheel storage cost and performance
  • Knowing the financial viability of using flywheel storage as a grid regulation resource
Course Document
In this professional engineering CEU course, you need to review the course document titled, “Flywheels for Rapid-Response Regulation of Electricity Grid Course” which is based on the Sandia Report, SAND2009-6457, "Benefits from Flywheel Energy Storage for Area Regulation in California—Demonstration Results” by Jim Eyer, October 2009.
To view, print and study the course document, please click on the following link(s):
Flywheels for Rapid-Response Regulation of Electricity Grid Course (264 KB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of ten (10) questions to earn 1 PDH credit. The quiz will be based on this DOE publication.
The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: