Each diploma rise in warmth index led to 187 MW improve in energy demand: CSE

New Delhi, August 13

Every diploma rise in warmth index resulted in 187 megawatt improve in electrical energy demand throughout Covid-19 lockdown, which was 6 per cent larger than in 2019, in accordance with a brand new evaluation.

The evaluation by Centre for Science and Environment (CSE) was on electrical energy demand and its correlation with climate knowledge in the course of the successive phases of lockdown and unlocking in Delhi.

The evaluation said that this development was largely pushed by warmth stress and cooling demand within the residential sector.

It stated the general degree of electrical energy demand decreased throughout onerous lockdown however with partial unlocking and even with a lot decrease degree of financial actions, warmth wave mixed with thermal discomfort in poorly designed buildings spiked the height demand once more – taking it fairly near the peaks of earlier summers.

“Higher heat stress this summer combined with thermal discomfort in poorly designed buildings and increased dependence on air conditioning upset the energy budget. Every degree rise in heat index resulted in 187 MW increase in electricity demand during lockdown- 6 per cent higher than in 2019,” says the CSE evaluation.

Anumita Roychowdhury, government director-research and advocacy, CSE, stated understanding this connection is crucial as local weather change will improve the frequency and depth of heatwaves sooner or later.

“If built environment is not designed for thermal comfort, heat stress will increase cooling demand and use of energy-intensive mechanical cooling systems, thus undoing the carbon savings from other energy efficiency measures,” she stated.

Roychowdhury says that in accordance with the World Energy Outlook of the International Energy Agency, cities account for practically 70 per cent of the worldwide consumption of electrical energy. 

In its examine, CSE carried out a fast evaluation of real-time electrical energy demand in the course of the lockdown and unlocking phases in Delhi.

It accessed real-time electrical energy consumption knowledge of 5-minute granularity from the State Load Dispatch Centre in Delhi, the apex physique accountable for built-in operations of Delhi’s energy system, the CSE stated in an announcement.

The evaluation has thought of the time slots similar to Pre-lockdown from January 1 to March 21, lockdown 1.0 – March 22 to April 14, lockdown 2.0 – April 15 to May 3, lockdown 3.0 – May Four to May 17, lockdown 4.0 – May 18 to May 31.

Also, Unlock 1.0 -June 1-30 and Unlock 2.0 – July 1-30.

As per Avikal Somvanshi, programme supervisor with CSE’s Urban Data Analytic Lab, “Delhi is a big energy guzzler and makes an important case study”.

“CSE’s earlier analysis in 2018 and 2019 had found that Delhi’s peak electricity demand was consistently higher than Mumbai, Kolkata and Chennai taken together.      “Delhi’s appetite for electricity has almost tripled since 2000. Domestic and commercial consumers together accounted for almost 75-80 per cent of annual electricity consumption in Delhi during the period 2010 to 2017. On an average, an electrified household in Delhi consumed about 260 kWh of electricity monthly in 2016–17, that was up from 155 kWh in 2000, which is almost three times the national figure of 90 kWh,” he stated.

Roychowdhury stated, “There is a message for the post-pandemic ‘new normal’. The learning from the lockdown phases challenge the current approaches that predominantly focus on energy efficient cooling systems and do not pay adequate attention to the architectural design and material and heat management strategies to reduce the overall thermal load on buildings and the city.” — PTI

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