EXHIBIT 99.7 CONFIDENTIALITY AGREEMENT CONFIDENTIALITY AGREEMENT (the "Agreement"), dated as of October 1, 1999, between MidAmerican Energy Holdings Company, an Iowa corporation (the "Company"), and David L. Sokol (the "Bidder"). W I T N E S S E T H...Confidentiality Agreement • October 25th, 1999 • Midamerican Energy Holdings Co /New/ • Electric, gas & sanitary services • New York
