• Utility companies would bear most of the implementation costs.
• About 70 percent of new costs would pay for the replacement and upgrading of communications systems, meters, substations, lines, and other infrastructure elements.
• About 20 percent of the costs would pay for high-voltage transmission-grid improvements, including those yielding better security and more efficiency, as well as the implementation of sensors to provide alerts of potential problems.
• About 10 percent would be for smart-grid components going into homes, which would cause monthly electricity bills to increase by an average of $9 to $12.
• Consumer adoption of smart-grid applications will occur slowly, with only 10 percent of residential customers having advanced systems by 2030. According to the study, many experts say the smart grid won't really succeed unless it requires as little consumer participation as possible.
• By 2030, less power usage would reduce carbon emissions by 58 percent over 2005 levels.
• Obstacles to smart-grid implementation include problems by officials in reaching agreement on technical standards and the reluctance of utility commissions to take steps that would raise customers' rates before the technology's value has been shown. Also, smart-grid equipment might not last long before better versions come along. This could discourage utilities used to buying equipment that lasts as long as 40 years.