Bangladesh’s farmers need policy, not luck, to survive the next energy shock

As tensions involving Iran, Israel and the United States ripple through global fuel markets, Bangladesh is once again confronting a familiar vulnerability: its dependence on imported energy. Nowhere is this more visible than in agriculture, where the cost of diesel-driven irrigation directly shapes food security. Yet, in the country’s northern plains, a quiet transformation – and a stroke of climatic luck – are revealing both a path forward and a policy failure.

In Rangpur, solar-powered irrigation systems are doing what years of subsidy-heavy fuel policies could not: stabilising costs for farmers. Nearly 600 solar irrigation pumps, installed under government initiatives in the last five to six years (since 2016), now generate around 5.9 megawatts of electricity daily. That may sound modest in national terms, but for farmers cultivating boro rice, maize, and vegetables, it is the difference between predictability and precarity.

The economics are striking. These systems collectively save an estimated 75 lakh litres of diesel each irrigation season, only in eight districts of Rangpur. At current prices, hovering above Tk115 per litre, that translates into hundreds of millions of taka in avoided costs. For smallholder farmers, who operate on thin margins, this is not just efficiency; it is survival.

Solar irrigation also solves a second, less discussed problem: reliability. Bangladesh’s rural grid remains prone to outages, especially during peak irrigation periods. Diesel pumps filled that gap, but at a rising cost. Solar systems, by contrast, provide water on demand, untethered from both grid instability and volatile fuel markets.

And yet, this success story remains incomplete, almost paradoxically so.

For eight months of the year, these large numbers of solar panels sit idle, almost without any use.

This is not a technical limitation; it is a policy one. Bangladesh has yet to meaningfully scale up net metering in the agricultural sector – an approach that would allow surplus electricity generated by these systems to be fed into the national grid. The implications are profound. Instead of being seasonal assets, solar irrigation systems could become year-round energy producers, generating income for farmers and easing pressure on the national grid.

The numbers again tell the story. Idle solar capacity in Rangpur alone could power tens of thousands of households daily. At a time when Bangladesh struggles with power shortages and rising import bills, leaving this capacity unused is not just inefficient – it is economically negligent.

The stagnation is equally concerning. No new solar irrigation projects have been launched since 2022. In a global context where countries are racing to diversify energy sources and build climate resilience, Bangladesh appears to have paused one of its most promising rural innovations.

Over a 48-hour period, Rangpur recorded more than 177 millimetres of rainfall, followed by several more days of showers. For farmers bracing for high irrigation costs, this was nothing short of a windfall. Across five northern districts, the rain reduced irrigation needs for up to 10-12 days, saving an estimated Tk100 crore (over US$9 million).

For an individual farmer, the savings are immediate and personal. Weekly irrigation costs, around Tk800 per acre, simply vanished for a cycle. In a season where diesel prices threatened to erode profits, the rain restored a measure of financial breathing room.

This is where Bangladesh’s agricultural reality becomes stark. Solar irrigation represents a structural solution – predictable, scalable, and aligned with long-term energy transitions. Rainfall, by contrast, is episodic and increasingly erratic under climate change. What arrived as relief this week could just as easily become flooding the next.

Indeed, the same rains that saved irrigation costs now carry risks of waterlogging, particularly in low-lying fields during the critical reproductive stage of rice. Farmers are acutely aware of this balance: too little water threatens yields; too much can destroy them.

This duality – between technological promise and climatic uncertainty – captures the broader challenge facing Bangladesh. The country is not short of solutions. It is short of continuity.

The lesson from Rangpur is not merely that solar works or that rain helps. It is that resilience cannot depend on chance alignments of weather and underutilised infrastructure. It must be built deliberately.

First, Bangladesh must restart and expand solar irrigation programmes. The existing 596 systems are proof of concept, not a finished solution. Scaling this model nationwide could significantly reduce diesel dependence, lower production costs, and insulate farmers from global energy shocks.

Second, net metering must move from pilot to policy. Integrating solar irrigation into the national grid would unlock dormant capacity, create rural income streams, and strengthen the country’s energy mix. This is low-hanging fruit, technically feasible and economically rational.

Third, agricultural planning must integrate climate variability more explicitly. Rainfall will continue to play a critical role, but relying on it as a cost-saving mechanism is inherently risky. Investments in water management, drainage systems, and climate-smart farming practices are essential complements to energy reform.

The geopolitical shocks of today will not be the last. Whether driven by conflict, market volatility, or climate disruption, external pressures on Bangladesh’s energy system are likely to intensify. The question is whether the country will continue to react, or finally begin to prepare.

In Rangpur, farmers have already seen what works. Solar power has reduced their costs. Rain has, for now, eased their burdens. But neither should be left to operate in isolation, or in the case of solar, in partial neglect.

Bangladesh cannot afford to rely on luck when it has already found a viable path forward.