Indonesia cuts gas to Singapore amid Borneo, Sumatra wildfire haze

Indonesia reduced natural-gas exports to Singapore by 31 million standard cubic feet per day. The stated reason was to protect the reliability of gas supplies for Indonesian electricity generation. The decision also came during a diplomatic dispute over wildfire haze affecting neighboring countries.

The cut has two parts. Fifteen million standard cubic feet per day is being removed from supplies connected to Natuna in Indonesia’s Riau island. Another 16 million standard cubic feet per day is being removed from Sumatra. Together, those reductions make up the announced total.

Singapore is the only country affected for now because SKK Migas specifically announced reductions in supplies going to Singapore. Indonesia said it would monitor developments daily. The move follows warnings from Indonesia’s energy minister that exports might be curbed to prioritize domestic consumption, amid criticism over regional haze.

Natural gas is a fossil fuel found underground, made mainly of methane. It is burned as a fuel in homes, industry, and power stations. Its role in electricity matters because a steady gas supply helps power plants keep producing energy when demand is high.

In a gas-fired power plant, burning gas releases heat. That heat can boil water into steam, which spins a turbine connected to a generator. In another design, hot combustion gases spin a turbine directly. Some plants combine both methods, using waste heat to improve efficiency.

The article links Indonesia’s export decision directly to electricity reliability at home. SKK Migas said the cut was intended to maintain domestic gas supply for electricity. If gas deliveries are reduced, the affected country must manage its power system with remaining gas, other fuels, stored energy, or replacement imports.

Indonesia announced a reduction of 31 million standard cubic feet per day in gas supplies to Singapore. That figure combines 15 million standard cubic feet per day from Natuna and 16 million from Sumatra. It measures a daily flow, not a one-time shipment.

The article says Indonesia supplied Singapore with 145.3 billion cubic feet in 2024. SKK Migas’s announced cut represents about eight percent of that total. The comparison is approximate because the reduction is stated per day, while the import figure covers an entire year, but the article provides eight percent as the comparison.

The number is important because it shows Singapore is losing a meaningful portion of a major supply relationship, at least temporarily. Indonesia remains one of Singapore’s main gas sources. SKK Migas said it would monitor developments daily, so the size and duration of the reduction could change.

If Indonesia keeps reducing deliveries, Singapore could face a tighter gas market. That may make it harder to secure enough fuel for power stations, especially during periods of strong electricity demand. The article does not report blackouts, shortages, or higher prices, so those outcomes remain possibilities rather than confirmed results.

The main mechanism is dependence on imported fuel. Singapore receives substantial natural-gas supplies from Indonesia, which provided 145.3 billion cubic feet in 2024. Losing part of that flow could force Singapore to draw on other supplies, arrange replacement cargoes, or use different fuels. Each option could involve extra cost or logistical pressure.

The immediate situation is limited: only Singapore is affected for now, and Indonesia said it would monitor developments daily. The longer the cut lasts, the more important diversification and supply planning become. The diplomatic dispute over haze adds uncertainty because future energy decisions may remain connected to regional relations.

Wildfire haze is a thick layer of polluted air produced when vegetation, forests, or other land burns. It contains smoke and tiny particles that can make breathing difficult and reduce visibility. The article describes haze from fires on Borneo and Sumatra as choking cities in neighboring states.

The pollution crosses borders because smoke from large fires can spread through the atmosphere with winds. Fires do not need to be inside a city, or even inside the affected country, to damage its air quality. In this case, the article says pollution levels rose to dangerous levels in Indonesia, Malaysia, Singapore, and East Timor.

Indonesia has struggled for months to contain the fires. Nusantara Atlas said they consumed more than 1.9 million hectares in the nine months to September. The crisis prompted Asean to call a meeting, while Singapore promised legal action against companies responsible for the fires.

Singapore could respond to reduced Indonesian supplies by finding gas from other producers or by using other fuels to generate electricity. The article does not name alternative suppliers or fuels, so the specific replacement plan is unknown. Its main choices would depend on what is available and can reach Singapore quickly.

Imported gas arrives through contracts and physical infrastructure, such as pipelines or facilities for handling liquefied natural gas. A replacement source may require new agreements, available cargoes, suitable equipment, and time. Switching power plants to another fuel may also require compatible technology, additional deliveries, and environmental or operating adjustments.

The limits matter because Indonesia was one of Singapore’s main gas sources, supplying 145.3 billion cubic feet in 2024. A short disruption may be manageable, but a prolonged cut could increase competition and costs. Singapore’s options would therefore depend on the duration of the reduction and the availability of alternatives.

Cross-border energy dependence creates leverage because electricity systems and industries need steady fuel. If one country supplies a large share, the exporter can change deliveries, while the importer may need time and money to find replacements. That imbalance gives the supplier influence during a disagreement.

The article provides a clear example. Indonesia supplied Singapore with 145.3 billion cubic feet of gas in 2024, making it one of Singapore’s main sources. Indonesia then cut deliveries by 31 million standard cubic feet per day while saying domestic electricity needs had priority. The action came amid arguments over wildfire haze.

This does not prove the cut was officially described as punishment. Indonesia’s stated reason was maintaining domestic gas reliability, while its leaders also warned countries that did not respect Indonesia. Still, the timing shows how energy links can become politically sensitive. Continued cuts could increase pressure on Singapore to secure alternatives.