How Indonesia plans to prevent blackouts through energy security

Strong synergy between the government, businesses, regulatory agencies and the public is significant to achieve energy security..

Jakarta (ANTARA) - In an increasingly volatile world, a country’s power grid is more than just infrastructure—it is the quiet backbone of national security.

Globally, major grid failures are rarely isolated accidents. Instead, they are the climax of chain of events: extreme weather, fragile fuel supply chains, limited transmission networks and administrative gaps.

For Indonesia, an archipelagic nation of over 17,000 islands, keeping the lights on is a highly complex challenge.

Under President Prabowo Subianto, the government is shifting its approach to energy security, treating reliable electricity not merely as an operational task for state utility company PT PLN, but as a matter of national security that requires cross-sector synergy.

PLN is responsible for operating the generator, transmission and distribution systems.

However, fulfilling this responsibility depends heavily on reliable coal and fuel supplies, sound energy policies, efficient logistics, and strong coordination among ministries and government agencies.

Therefore, PLN must work with various stakeholders to face the challenges of providing primary energy.

While the global transition to green energy gathers pace, coal remains the immediate anchor of Indonesia’s electricity system. The large demand for PLN's coal illustrates the complexity of this challenge. Every year, the need reaches around 154 million metric tons.

While 134 million tons are secured under official long-term contracts, a vital 20-million-ton gap must be actively managed to prevent power plant reserves from falling into critical territory.

To protect the domestic grid from global price spikes and export demands, the government has instituted a Domestic Market Obligation (DMO) assignment of up to 212 million tons, while increasing the allocation of medium-calorie coal.

However, the success of a policy is not only determined by the size of the quota set. What is much more important is ensuring that coal with quality according to specifications actually arrives on time at each plant.

Related news: Indonesia prioritizes energy security over fossil fuel phase-out: DEN

Better governance

Consequently, clean governance and transparency have emerged as critical parameters in primary energy management.

To prevent supply-chain bottlenecks, the government has established an integrated cross-sector procurement team.

Combining the oversight of the Ministry of Energy and Mineral Resources, the Directorate General of Minerals and Coal, state audit inspectors, and the Financial and Development Supervisory Agency (BPKP), this coalition aims to wipe out old inefficiencies—such as volume discrepancies, delivery delays and quality manipulation.

In addition to governance, technological flexibility is being prioritized to enhance system resilience.

The successful technological retrofit at the Suralaya coal-fired power plant (PLTU), which allows the facility to utilize lower-grade coal with a calorific value of 4,100 to 4,200 kcal per kilogram, serves as a model for other generating units.

The technical capability to process a wider range of coal specifications reduces PLN’s dependence on limited high-grade coal supplies. If a primary supply chain stalls, Suralaya can pivot to domestic alternatives without risking a blackout.

According to PLN President Director Darmawan Prasodjo, the company has prepared short-, medium- and long-term action plans to maintain the reliability of the national system.

These steps include expanding coal supply channels, accelerating power plant retrofits, strengthening the regional transmission network and expanding renewable energy capacity.

Darmawan added that securing additional supplies of coal with calorie levels above 4,500 kcal per kilogram is projected to boost the supply capacity of power plants on the island of Java by approximately 5 gigawatts (GW).

Furthermore, the state utility company is focusing on strengthening transmission networks to maximize existing generation capacity.

For example, network upgrades in Sumatra now allow surplus electricity from the southern part of the island to be transmitted to the northern region during periods of high demand.

As an archipelagic nation, Indonesia must also address distinct geographical challenges.

Currently, approximately 4,435 diesel-powered generators serve as the backbone of electricity supply in remote, isolated and border regions.

Operating these generators requires roughly 2.26 million kiloliters of fuel annually, with an estimated state budget allocation ranging from Rp26 trillion (US$1.45 billion) to Rp39.3 trillion (US$2.19 billion).

To break this costly and carbon-heavy dependence, PLN is pushing its "dedieselization" program.

The initiative gradually replaces remote diesel stations with local solar energy, hybrid microgrids, biomass and battery energy storage systems (BESS).

However, given the remote geography, the transition must be carried out carefully to ensure that small-island economies do not experience sudden drops in power reliability.

Related news: Indonesia pushes ASEAN cross-border power grid expansion

The 100-gigawatts horizon

Ultimately, long-term security lies in diversification. The government’s roadmap includes ambitious plans to develop up to 100 gigawatts of solar power (PLTS) alongside hydro, wind, and geothermal projects.

The project also opens up opportunities to reduce fuel consumption, reduce electricity supply costs and strengthen the sustainability of Indonesia's energy sector.

Building energy security is not simply about providing fuel or building new power plants. Far more important is implementing transparent governance, solid cross-sector coordination, continuous technological innovation and a monitoring system capable of detecting potential disruptions before they escalate into crises.

The government's proposal to establish an integrated mechanism to monitor coal and fuel reserves, supplier compliance, power plant conditions and potential system disruptions serves as a reminder that prevention is always better than dealing with a crisis.

Electricity is the lifeblood of development. Maintaining its reliability means keeping economic activity moving, public services running, industry productive and people's lives running smoothly.

Strong synergy between the government, businesses, regulatory agencies and the public is significant to achieve energy security with a reliable national electricity system as the ultimate goal.

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*KRT Tohom Purba is Chairman of the PLN Watch

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