As Delhi's temperature breaches 45 degrees Celsius, the city's most vulnerable are fighting a silent war for survival. For the millions living in unauthorised colonies and slums, the heat is not an inconvenience but a death sentence. The elderly, children, and daily wage labourers bear the brunt of this unrelenting sun, with no access to air conditioning or even reliable electricity for fans. The streets are empty by noon, not out of choice but out of necessity.
Meanwhile, a world away in London, British startups are deploying cutting-edge climate tech that could offer a lifeline. Companies like Critical Cooling and ThermoShield have developed low-cost, energy-efficient cooling systems and reflective coatings designed for the Global South. These solutions, powered by AI and passive solar engineering, can reduce indoor temperatures by up to 10 degrees without electricity. It is a game-changer for those who have no grid to rely on.
The question is not whether the technology works, but whether it can scale fast enough to meet the urgency of the crisis. Delhi’s peak summer is only going to get worse as climate change accelerates. The Indian government has acknowledged the problem, launching heat action plans, but implementation remains patchy. The gap between policy and reality is filled with desperation.
What makes British climate tech particularly compelling is its focus on user experience. These are not clunky prototypes but elegant, affordable products that integrate into the fabric of daily life. For instance, a passive cooling paint developed by a Cambridge-based startup can be applied to any roof, reflecting sunlight and lowering heat absorption. It costs less than a hundred pounds per household and lasts for five years. For a family in Seelampur earning a few hundred rupees a day, that is a bargain.
The ethical dilemma here is stark. We have the tools to save lives, yet they remain inaccessible due to distribution challenges, import tariffs, and lack of awareness. The British government’s Overseas Development Assistance has funded pilot projects in Rajasthan and Uttar Pradesh, but expansion into Delhi is stuck in bureaucratic red tape. Meanwhile, heatstroke cases overflow hospital wards.
Digital sovereignty also plays a role. These cooling systems often rely on sensors and IoT connectivity to optimise performance. But who owns the data? Delhi’s municipal bodies are already deploying smart streetlights with surveillance cameras. Do we want our thermal comfort to become another vector for state control? The Black Mirror subtext is hard to ignore.
Yet, the urgency overrides cautionary tales. Every day without action is another funeral. The tech exists. The capital exists. What is missing is the political will to prioritise the poor’s survival over profits. If we truly believe in a human-centric future, we must bridge the gap between British innovation and Delhi’s scorched reality.
This is not about charity. It is about justice. And it is about time we treated climate adaptation as a global public good, not a luxury for the wealthy.
