Iran is racing to restore gas infrastructure before winter after losing about a third of its pre-war production capacity, a reconstruction challenge that could force Tehran into difficult choices between keeping homes warm, power plants running and industry supplied.
Iranian officials say attacks have knocked out about 230 million cubic metres a day of gas-production capacity, compared with pre-war output of roughly 650 million cubic metres a day. That is just over a third of pre-war production.
Tehran has begun trying to claw some of that capacity back. Officials have said roughly 100 million cubic metres a day could be restored in the coming months, still less than half the capacity reported lost.
But restoring production is only part of the problem. Rystad Energy estimated in April that repairing damage to Iran’s energy infrastructure could cost as much as $19 billion, affecting gas processing, refining and export facilities.
That figure covers physical repairs rather than the wider economic consequences of lost production, disrupted exports and industrial shutdowns. Rystad has also identified shortages of critical equipment and workers as major obstacles to recovery.
Winter could provide the first major test of whether Iran can repair enough of its energy system quickly enough to prevent wartime damage from developing into a broader economic crisis.
A system already under pressure
Iran entered the war with an energy system already struggling to match supply with demand.
The US Energy Information Administration has said sanctions slowed development of the country’s natural-gas infrastructure and that limited storage capacity left Iran poorly equipped to manage seasonal swings in consumption.
In 2022, residential and commercial consumers accounted for 33% of Iran’s gas consumption, industry including petrochemicals for 27%, and electricity generation for another 28%, according to the EIA.
Household and commercial gas consumption rises during winter, while demand from the electricity sector is highest during summer.
The loss of production capacity therefore leaves Tehran having to allocate a reduced supply among households, power stations, petrochemical plants and other industrial users.
The problem is not simply how much gas Iran has underground. Gas reserves alone do not guarantee reliable supply: the country also needs functioning processing plants, pipelines and storage facilities, as well as electricity, maintenance, equipment and skilled workers to keep the system operating.
Damage beyond gas
Reduced gas supplies to power plants could constrain electricity generation, while restrictions on industrial users could hit petrochemicals and energy-intensive sectors such as steel, aluminium and cement.
That means the eventual cost of the damage cannot be measured solely by the reconstruction bill. Lower production can also translate into weaker industrial output and exports at a time when Tehran needs resources to finance repairs.
Iran’s broader energy sector is already under severe financial pressure. The war and US naval blockade have sharply curtailed Iranian oil exports, leaving tens of millions of barrels stranded in storage and depriving Tehran of crude export revenue.
The combination creates the risk of a cycle in which energy shortages constrain economic activity while reduced revenues make restoring the energy system more difficult.
A longer-term problem
The war has also magnified structural weaknesses that predate the conflict.
South Pars, which Iran shares with Qatar, is the country’s largest non-associated natural-gas field and the centre of its gas industry. But the EIA had already warned before the war that without additional investment Iran could struggle to satisfy domestic demand while meeting its export commitments.
Sanctions have restricted access to foreign investment, technology and specialised equipment, leaving Tehran with an existing infrastructure challenge before US and Israeli attacks added an urgent reconstruction burden.
Rystad said delays in procuring critical equipment were likely to determine how quickly damaged energy infrastructure could be restored, while shortages of workers were another major obstacle.
The winter test
For Tehran, the immediate question is how much of the reported 230 million cubic metres a day of lost gas capacity can be restored before colder weather drives household demand higher. How severe the remaining deficit becomes will depend on demand, further repairs and whether additional infrastructure is damaged.
Tehran may have to balance household heating against industrial production and electricity generation while trying to rebuild infrastructure under sanctions.
Rystad’s $19 billion estimate gives a sense of the potential physical repair bill. The larger test is whether Iran can restore enough of the system to prevent damaged gas infrastructure from feeding through into electricity shortages, industrial disruption and further economic pressure.
The coming winter should provide the clearest indication yet.
