New Delhi: As the city ushers in the New Year, its power system feels the heat. Data from 2019 to 2026 shows a striking pattern: electricity demand shoots up consistently around Dec 31 and Jan 1, highlighting how celebrations, extended commercial activities and the winter chill combine to push the city’s grid to its limits.The power system experienced record Dec peaks of 5,505 megawatt in 2025 and 5,213 MW in 2024, both on the last day of the year. Similarly, the Jan highs repeatedly aligned with the first day of the year — reaching 5,655 MW in 2025 and 5,343 MW in 2020.
Analysis of the data shows that Dec 31 emerged as the peak demand day in Dec three — 2019, 2024, and 2025 — in the last seven years. In the remaining years, the peaks were scaled a few days earlier, often reflecting colder spells. However, demand on Dec 31 remained consistently high even when not at the absolute peak. The electricity consumption in Jan tells a similar story. The first day of the year recorded the monthly high in 2019, 2020 and 2025. In the other years, the peaks were recorded slightly later in the month, but demand on the first day of Jan remained close to the maximum, highlighting the growing pressure of New Year celebrations on the power grid. The data also indicates that the Jan peaks are generally higher than Dec ones, reflecting the persistence of cold weather till the end of the month, a discom official said. Several other factors also contribute to these patterns. New Year celebrations play a crucial role as residential, commercial and public spaces increase the use of electricity for lighting, heating, cooking and entertainment, he said. Hotels, restaurants, malls and other establishments operate for extended hours during the end of Dec and beginning of Jan, adding significantly to the evening and night-time load on the grid. Cold waves, often prevalent during this period, further drive up heating demand in households and offices, the official said.The post-Covid-19 period reinforces this trend. While the pandemic years (2020–2022) showed slight deviations, with peak Dec demand occurring earlier than the last day because of reduced commercial activity, the return to normalcy restored the alignment of winter peaks with year-end and New Year periods.This necessitates the importance of careful load forecasting to ensure grid stability when the system is under high stress, he said. A senior official of BSES, which provides electricity to most parts of Delhi, said over 50% of the total projected winter demand across BSES Rajdhani Power Limited (BRPL) and BSES Yamuna Power Limited (BYPL) areas will be met through renewable and clean energy sources, including solar, wind, hydro, waste-to-energy, hybrid, and rooftop solar. “This diversified mix not only aligns with India’s decarbonisation goals but also enhances grid reliability and reduces Delhi’s carbon footprint during the low-demand winter season,” he said. To maximise efficiency, BSES will bank surplus power generated during the winter months with partner states, which will be returned to Delhi during the high-demand summer period, he added.Tata Power Delhi Distribution Limited said that the increased demand in its distribution area was met on Dec 31 and Jan 1 this time without any outage or network constraints, ensuring uninterrupted and reliable power supply to consumers during the critical peak-load period.
