As people come home from work, their first inclination is to turn on a light. If people come home and it is light outside, there is less of an inclination to turn a light on. But pushing the sunset back one hour does not save the energy alone. Energy savings is realized because even with the time adjustment, people tend to go to sleep at the same time under daylight saving time as standard time. And, in the morning, whether it is light out or not, lights are turned on.
People get ready for work and school.
And, it takes the same amount of time to get ready to go to work or school under daylight saving time as it does under standard time. The following information is preliminary and the final review should be completed in the very near future. According to CEC econometric analysis, DST would save California about 500 MWh in the Spring months. Results of the CEC study on DST's ancillary benefits during the Spring months are consistent with the 1975 DOT report. DST saves lives and prevents traffic injuries.