Turning Scorching Summers into Sustainable Energy:

(Courtesy: Hindustan Times)

 Can Extreme Heat Become an Opportunity? Lessons from Banda's Record Temperatures

Recently, Banda, a town in Uttar Pradesh, recorded one of the highest temperatures ever observed in the region. During such intense summer conditions, many people prefer to complete their outdoor activities before 10 a.m. and remain indoors until evening.

The challenge is not only coping with the scorching heat but also earning a livelihood and maintaining normal daily routines.

While extreme temperatures bring several difficulties, I began to wonder: Is there a way to harness this abundant sunlight and heat for the benefit of society?

Instead of viewing the sun only as a source of discomfort, perhaps we should also see it as a powerful and largely untapped resource.

1. Solar Energy: An Obvious Yet Underutilized Opportunity

When temperatures soar, it usually means that sunlight is available in abundance. This creates an ideal environment for solar energy generation.

The most common approach is to install solar panels that convert sunlight into electricity. The generated power can be used directly for operating fans, lights, and other appliances. Excess power can be stored in batteries for use during the night.

However, when discussing solar power, people often think only about generating 220V AC electricity. In many cases, the electricity is converted multiple times between DC and AC, resulting in energy losses.

An alternative approach could be the wider use of DC appliances such as DC fans, lights, and charging systems. This would reduce conversion losses and improve overall efficiency.

2. Solar Water Heating: Beyond Hot Water

Solar water heaters are already popular in many parts of India. During winter, the heated water is useful for bathing. But what about the summer months?

The heat generated by solar water systems can be used for several other purposes:

• Keeping food warm
• Pre-heating water for cooking
• Community kitchens
• Small-scale food processing activities

In larger installations, solar heat can even be used to generate steam. The steam can then drive turbines to produce electricity. Although such systems are more suitable for industrial applications, they demonstrate the enormous potential of solar thermal energy.

3. Making Solar Cooking Simpler and More Affordable

Solar cookers have existed for decades, but many models are either expensive or too complicated for widespread adoption.

What if solar cooking could be made simpler using everyday household items?

Dark-colored surfaces absorb more heat than light-colored surfaces. A cooking vessel coated with a safe black heat-absorbing finish can potentially capture more solar energy. If such a vessel is enclosed within a transparent glass container, heat may be trapped inside, creating a greenhouse effect similar to that used in commercial solar cookers.

Such a simple setup may not fully cook elaborate meals, but it could help with:

• Boiling eggs
• Pre-cooking vegetables
• Heating water
• Partially cooking rice and lentils

Even partial cooking can reduce the amount of conventional fuel required later.

Thinking Beyond Survival

As climate change leads to increasingly frequent heat waves, societies must learn not only how to survive extreme temperatures but also how to benefit from the resources they provide.

Places like Banda receive an enormous amount of solar energy every day. Rather than viewing the sun solely as an adversary, we should explore innovative ways to convert its power into electricity, cooking energy, and other useful applications.

The future may belong to communities that learn how to transform environmental challenges into sustainable opportunities.