Registration opens today at 2pm for the UCR Merit Badge Fair put on by the UCR Chapter of the Institute of Electrical and Electronics Engineers.
On February 1, 2014 - 8a.m. to 5 p.m. - they are doing Electricity, Electronics, & Programming
On April 12, 2014 they are doing Energy, Engineering, and Robotics
As far as the requirements, the website says:
I sent an email to see if they could be more specific as to what requirements they will do at the fair.Each scout should download the Merit Badge workbook for each of the merit badges they are interested in. It is strongly advised that the workbooks be filled out as completely as possible before coming to the UCR Merit Badge Fair. Specific prerequisites need to be completed ahead of time.
Here is the link: http://ieee.ee.ucr.edu/MBFair.html