Congressional Budget Office Cost Estimate: H.R. 5026, An Act to Amend the Federal Power Act to Protect the Bulk-Power System and Electric Infrastructure Critical to the Defense of the United States against Cybersecurity and Other Threats and Vulnerabilities [open pdf - 17KB]
"H.R. 5026 would amend existing law regarding the regulation of facilities that transmit electric power. Under existing law, most of the standards governing the reliability of the electric power system are issued by the Electric Reliability Organization (ERO), subject to approval and enforcement by the Federal Energy Regulatory Commission (FERC). This act would direct FERC to issue standards regarding the security of computer networks used to facilitate electric power transmission (known as cybersecurity), which would remain in effect until the ERO adopts regulations for such matters. The bill also would direct the Department of Defense (DoD) to conduct a study of grid security in certain states and territories and establish procedures for responding to emergencies and protecting information related to cybersecurity."
Congressional Budget Office: http://cbo.gov/