Senior visiting fellow, George Mason University
The new push for an electricity grid linking Iran, Russia and Azerbaijan grid promises closer energy integration but could leave Tehran more exposed to Moscow’s leverage as rival corridors threaten to dilute its regional role.
The city’s water resources are in exponential decline, Reza Haji-Karim, head of Iran’s Water Industry Federation, told the website Didban Iran.
“Water rationing should have started much earlier. Right now, 62 percent of Tehran’s water comes from underground sources, and the level of these aquifers has dropped sharply.”
The crisis, he said, is the result of years of neglecting scientific warnings about groundwater depletion and climate change.
“The only way to save Tehran is through a chain of measures – from wastewater recycling and consumption reform to cutting agricultural water use,” he added.
Unannounced rationing begins
Residents of Tehran have reported repeated overnight water cuts in several districts in recent days. The Tehran Water and Wastewater Company said the outages are intended to refill storage tanks and prevent the city’s distribution network from collapsing.
Local media outlets reported that nightly rationing has already started in parts of the capital and now continues until early morning hours.
The government may be forced to reduce water pressure to almost zero at night when demand is low, Energy Minister Abbas Aliabadi said Saturday, urging households to install storage tanks.
"Pipeline infrastructure in our country is more than 100 years old; the pipes have become worn out, and some of them were also damaged during the 12-day war" with Israel in June, the minister said.
Presidential warning and vanishing reserves
President Masoud Pezeshkian warned on Thursday that if rainfall does not resume by the end of autumn, Tehran will face water rationing, adding, “If it still doesn’t rain, we will have no water and will have to evacuate the city.”
The Tehran Regional Water Company has said that the capital’s five major dams are now only 11 percent full.
Ali Shariat, secretary-general of the Water Industry Federation, blamed the deepening crisis on “mismanagement and fragmented decisions in agriculture and industry.”
“My honest advice to the public is to take the president’s words very seriously. He has told the truth – bitter but undeniable,” he added.
“Continued inaction may lead to forced migration from Tehran,” Shariat added.
Dams near collapse
A video posted on social media on Thursday showed the dry bed of the Latian Dam near Tehran, whose manager said only half of its remaining 10 percent capacity can be used. Officials in neighboring Alborz province reported that the Karaj Dam is now more than 90 percent empty, with only seven percent of its reservoir remaining.
Tehran, home to nearly nine million people, depends on five dams – all reporting sharp declines.
The Laar and Mamloo reservoirs are at 1% and 7% capacity respectively, while only Taleghan remains above one-third.
This comes as the meteorological organization forecasts no significant rainfall for the rest of November.
Tehran is experiencing one of the driest periods in the past 50 years, according to the energy ministry. If current trends persist, officials warn, the city may run out of drinkable water within weeks.
Residents say water has been shut off from midnight until around 5 a.m. in recent nights.
“Despite repeated denials by officials, it appears the process of rationing has started” and citizens in parts of the capital “are deprived of water during the night,” Mizan News Agency, affiliated with the judiciary, wrote.
The daily Haft-e Sobh likewise reported sudden five-to-six-hour overnight cuts in drinking water across several districts, all without prior notice.
Reduced pressure across the city, the paper said, and declining surface and groundwater reserves had led to “serious instability” in Tehran’s water network.
The outages have lasted long enough to affect even households with backup storage tanks, according to the report.
Rising frustration
Haft-e Sobh quoted residents as saying the sudden shutdowns disrupted daily life. “When the water is cut off at night, we don’t know when it will return, so we can’t plan our use. Even tanks empty quickly,” one resident said.
President Masoud Pezeshkian warned on November 6 that if rain does not arrive by December, water will have to be rationed across Tehran, adding that prolonged drought could even force evacuation of the city.
The head of Tehran’s provincial water company recently described the capital’s situation as “red and concerning.”
Health and cost concerns
Unannounced rationing, Haft-e Sobh warned, could hinder hygiene and household routines dependent on steady water access. Unreliable supply may increase health risks in residential buildings and impose higher costs on families forced to rely on water tanks or delivery services, it added.
Meteorological data show 20 provinces have gone more than six weeks without measurable rainfall.
No precipitation has fallen in Tehran since the start of autumn, Mohammadreza Kavianpour, head of Iran’s Water Research Institute, said on Thursday warning that forecasts show the drought is likely to persist through the season.
“The risk of water scarcity in the capital must be taken very seriously,” Kavianpour said.
Tehran’s supply depends heavily on the Karaj Dam, whose remaining reserves are sufficient for only two weeks of drinking water.
Environmental experts say years of over-extraction, unscientific dam-building and poor management have pushed the country toward what some describe as “water bankruptcy.”
In mid-October 2025, Azerbaijan’s deputy prime minister announced the formal launch of an electricity-linkage project among the three countries.
The plan builds on Iran’s 2024 proposal to route Russian electricity through its territory to Persian Gulf Arab states, advancing earlier diplomatic pledges. Full integration is targeted by late 2025, alongside coordination with Armenia.
The initiative fits Russia’s push for southern energy routes under sanctions, but could undercut the strategic weight of the International North-South Transport Corridor (INSTC)—the trade artery linking India, Iran and Russia through Azerbaijan.
Shared leverage
A connected grid could deliver real economic and strategic gains.
By balancing supply and demand across borders, it might ease chronic blackouts—especially in Iran, where sanctions have crippled capacity.
Surplus electricity from Russia and Azerbaijan’s renewables could offset Iranian shortages, while shared infrastructure encourages cross-border power sales and investment.
For Iran, participation promises stability and regional relevance; for Russia, another path around Western-controlled networks; for Azerbaijan, a global profile built on “green power outreach.”
Iran’s balancing act
Integration could offer Tehran both relief and peril.
Years of underinvestment and gas dependency have left its grid aging and inefficient. Sanctions block access to capital and modern equipment, limiting meaningful expansion.
To benefit from the move and reduce vulnerability, Tehran needs to diversify its energy mix, curb waste and reform governance—meaning remove favoritism from energy planning and open the sector to transparent partnerships.
These are tall orders without which the project may only deepen Tehran’s reliance on Moscow.
Caspian crossroads
The grid plan also intersects with rival connectivity schemes.
The International North–South Transport Corridor (INSTC)—a 7,200-kilometer multimodal corridor linking Mumbai to St. Petersburg via Iran and Azerbaijan—has been a lifeline for sanction-hit Tehran, yet it faces chronic delays and funding gaps.
Meanwhile, the EU-backed Black Sea Energy Corridor, launched in 2022, will send 4 GW of Azerbaijani wind and solar power to Europe by 2032. Faster, cleaner and politically safer, it already attracts more Western financing.
If momentum shifts toward the Black Sea route, Iran could lose as much as $10–15 billion in potential transit fees and influence, reinforcing its peripheral role in regional trade.
The choice ahead
Moscow’s dominance—and its expanding 2025 alliance with Tehran—could give it decisive leverage over energy supply, echoing Gazprom’s tactics in Europe.
Western sanctions on both Moscow and Tehran could deter investment and drag Baku into secondary penalties.
Regional flashpoints—from Armenia-Azerbaijan tensions to Iran’s domestic volatility—add fragility. Environmental and technical challenges add further strain, chief among them: fluctuating Caspian water levels and climate stress on Iran’s water-energy nexus.
The Iran-Russia-Azerbaijan grid could make Tehran a regional electricity hub or entrench it as Moscow’s junior partner.
Two visions now compete around the Caspian: one driven by geopolitical necessity, the other by the global green transition. How Iran navigates between them will determine whether this bridge becomes a lifeline—or another bind.
