The Illinois Public Interest Research Group claims the "smart grid" and modernization legislation allowed ComEd to increase profits by 47% over eight years.
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The watchdog report also claims consumers have seen a 37% increase in the delivery portion of their electricity bills.
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While ComEd admitted to its role in the bribery scheme, it disputes the report's findings. They said consumers have seen benefits from the modernization, including fewer unplanned outages.