The End of Daylight Saving Time: A New Perspective on Energy Savings
Twice a year, we engage in the same ritual: adjusting our clocks, setting alarms, and recalibrating our electronic devices. These shifts in time have been marketed for decades as a way to save energy, but increasingly, that promise seems more like a fading myth. Recently, Pedro Sánchez, the Spanish Prime Minister, announced plans to propose to the European Union the elimination of the seasonal time change, raising the crucial question: does this practice truly help to save energy?
Energy Savings Under Scrutiny
According to an analysis by Papernest, the transition to daylight saving time barely impacts overall electricity consumption. Drawing on data from the Red Eléctrica de España (REE) from 2020 to 2024, the report highlights that the effect of the time adjustment has become nearly imperceptible. “The time change no longer has a clear effect on electricity consumption. In several years, an increase has even been observed during the afternoons,” the report reveals.
A closer examination draws upon data comparing electricity usage during the week preceding and the week following time changes for five successive autumns. The findings indicate minimal fluctuations—ranging from -6% to +2%—with no discernible pattern. Alarmingly, in three of those five years, electricity consumption actually spiked between 0.3% and 2.4% during peak domestic usage hours (6 PM to 11 PM).
Interestingly, only in 2022 did the report register a substantial drop in consumption of almost 6%. However, analysts attribute this anomaly to an extraordinary energy landscape marked by record electricity prices, a general decrease in demand, and more measured heating usage. This drop, the report asserts, should not be directly linked to the seasonal time change.
A Shift in Consumption Patterns
In summary, Spanish households demonstrate almost no change in electricity use before and after the time change. Factors such as natural light or temperature appear to wield little influence. “This reflects that the impact of the time change on the electricity consumption of current homes is practically insignificant,” concludes the Papernest report.
The rationale behind daylight saving once revolved around the efficient use of daylight to curtail electricity expenses. However, our current consumption habits have significantly evolved. The report cites several modern factors that dilute the perceived benefits of the time change: teleworking, the rise of electrically powered heating, and the increased reliance on connected devices. Consumption is no longer confined to daylight hours; it has spread unevenly throughout the day.
Moreover, the findings emphasize that the minor fluctuations in electricity demand observed during these time changes cannot be tied to variations in temperature or solar radiation. There is no consistent correlation between meteorological conditions and changes in electricity demand.
Financial Implications: Minimal Savings
What does this mean for wallets? Hardly anything. Papernest’s calculations suggest that the average savings for each household barely exceed 1.4 euros annually—even in the most optimistic scenario. This figure derives from the average annual consumption per household in Spain (3,487 kWh, per Iberdrola), combined with a projected reduction of 1.4% after the time change, evaluated against an average rate of €0.132 per kWh. “Even in this optimistic scenario, the economic effect of the time change is practically insignificant compared to the annual electricity bill,” the report summarizes.
To put it into perspective, adjusting clocks amounts to a saving of roughly €0.12 per week, equating to just about an hour of LED bulb usage. As such, the time change has transitioned from a tangible energy-saving measure to merely a symbolic gesture.
The Focus on Well-being
With the energy savings debate failing to offer robust support for the continuation of daylight saving time, other dimensions come into focus—namely, health and well-being. Experts, including those from the Spanish Sleep Society (SES) and various scientific institutions, advocate for maintaining winter time as the most biologically beneficial option.
International studies bolster this stance, indicating that adhering to winter time fosters adequate rest and reduces fatigue while enhancing morning safety. Conversely, the adoption of permanent daylight saving time risks inducing a chronic state of “social jet lag,” particularly in the western parts of Spain, where sunrise could be delayed past 9:30 AM during winter months.
The clock no longer changes the larger picture. Years of data consistently suggest that time adjustments do not yield significant benefits in energy savings, financial relief, or practical effort. In modern society, human behavior is driven more by habits, technological advancements, and climatic conditions than the mere whims of sunlight.
Drawing upon a poignant analogy, one might say: “The country that never tires of hurting itself.” The truth about time changes could be simplified to a controversy where the only certainties are inconvenience and minimal benefits. With yet another clock adjustment approaching, perhaps it is time to consider halting this seemingly antiquated practice once and for all.
In the end, moving the clock forward or backward may no longer serve a purpose, and determining our actual time—the time we spend on rest and consumption—might be the most valuable metric of all.