When you reduce your electricity use during peak summer hours, everyone benefits with lower electric rates and a cleaner environment, because the WMLP can reduce its use of low-efficiency electricity generating plants which operate only during peak periods.
Did you know that 30 percent of your electric bill is directly related to the amount of electricity Wellesley uses for just one hour during the entire year? That one hour, the peak demand hour, typically occurs on a hot weekday afternoon between June 1st to September 15th between the hours of 3 – 7 p.m.
The graph below shows summer daily peak loads for 2021 and 2022-to-date, and the high cost associated with increasing demand. Every additional megawatt of peak demand adds approximately $8,500 per month ($102,000 per year) to WMLP costs.