Seasonal mismatch of energy transition

The blue solar panels on retired teacher Anisur Rahman's rooftop lay idle under a thick blanket of fog, producing zero watts of power. Meanwhile, on the ground floor, his newly installed electric heat pump hummed non-stop to heat water, drawing maximum power from the national grid. Two years ago, Anisur invested a large portion of his pension savings in solar panels. During summer load-shedding, they ran his AC for free and slashed his electricity bill to zero. Inspired to adopt a fully eco-friendly lifestyle, he ditched his gas boiler three months ago in favour of an electric heat pump. However, when winter arrived and fog blocked the sun, his heat pump devoured expensive grid electricity, resulting in a monthly bill that wiped out an entire year's worth of energy savings.

Anisur's frustration captures a critical global dilemma in climate action known as the "seasonal mismatch" of the energy transition. Solar panels and heat pumps are two vital tools for weaning households off fossil fuels, but their underlying economics frequently clash. Solar panels reach peak generation on hot summer afternoons, when residential heating demand is non-existent, whereas heat pumps require maximum electricity on freezing winter mornings and nights, when solar output drops to zero.

Compounding this challenge, electricity in developing nations often costs significantly more per unit than natural gas. Switching from gas to electric appliances skyrockets monthly operating costs, piling onto the already steep upfront capital expenditure required for green retrofits.

Discarding green technology is not the answer; rather, the solution lies in smarter integration through thermal energy storage. By running heat pumps during the brief midday hours when winter solar generation is actually available, households can store hot water in insulated tanks for evening and morning use, effectively bypassing peak grid electricity rates. Ultimately, the energy transition cannot remain an abstract slogan; it must make financial sense for the average family's wallet. Policymakers must shift from merely subsidising individual green appliances towards incentivising integrated systems, smart controllers, and consumer education. Neither pumps nor panels can win the climate fight alone, and their economic synergy will ultimately determine how affordable our green future truly becomes.

Fardina Jerin Mim

Department of sociology

University of Dhaka