Tambak Lorok Plant Enters Operation with GE Vernova’s H-Class Turbine

PLN Indonesia Power’s (PLNIP) 780-MW Tambak Lorok combined-cycle power plant began commercial operation in Tanjung Mas, Central Java. Tambak Lorok Block 3 is equipped with GE Vernova’s HA combined-cycle equipment and will deliver the electricity required to power approximately 5 million homes in Indonesia.

“Tambak Lorok represents a milestone for Indonesia, adding to the system a large-capacity plant that brings stability to the country's electricity matrix,” said Edwin Nugraha Putra, CEO of PLN Indonesia Power. “Tambak Lorok is in line with the national energy policy to lower emissions from the power sector. As more coal-fired plants are retired, the need to add more reliable and flexible power that provides greater grid stability is essential. We trust GE Vernova, Marubeni Corp. and Hutama Karya, as the EPC, have delivered quality and safety in building this power plant to provide reliable and more sustainable electricity to the Java grid.”

Specifically, the plant uses GE Vernova’s 9HA.02 gas turbine, a STF-D650 steam turbine, the Once Through heat recovery steam generator, and balance-of-plant equipment. GE Vernova also signed a 15-year service agreement to manage project lifecycle, training, and maintenance, enhancing operational performance and plant reliability. Training will support knowledge transfer and the skills development of PLNIP’s operations team.

“Our HA technology has been selected to increase power generation capacity in Indonesia and support its decarbonization process,” said Ramesh Singaram, Asia President and CEO of GE Vernova's Gas Power. “In our commitment to support Indonesia’s power development and economic growth, our HA technology offers the low emissions to give our customers, like PLN Indonesia Power, the ability to reduce fuel consumption while lowering carbon emissions—moving forward this technology will help transition to net-zero carbon emissions.”

Using H-class technology, Tambak Lorok produces up to 60% less emissions than similarly sized plants powered by diesel, coal, and other fossil fuels. The H-class gas turbine portfolio can burn up to 50% by volume of hydrogen when blended with natural gas, with future potential for 100%.

GE Vernova’s H-Class News

In July 2024, Korea Southern Power Co. (KOSPO) started operation at the Shinsejong combined-cycle power plant in Sejong Multifunctional Administrative City, South Korea using GE Vernova’s 7HA.03 gas turbine. The combined-cycle plant represents GE Vernova’s 100th HA-class commissioning and the first 7HA.03 gas turbine in South Korea. According to GE Vernova’s simulation, H-class units in South Korea could reduce the fossil fleet’s carbon emissions intensity by more than three times per kwH.

With this technology, the Shinsejong plant can generate power with lower NOx emissions of three parts per million at the main stack with a flue gas aftertreatment system. The plant will generate power to sell at Korea Power Exchange and district heating for Sejong City. In alignment with South Korea’s goal of carbon-neutrality by 2050, KOSPO will use the HA unit to meet the increasing demand for heat, air conditioning, and electricity.

Also, in early July, the Guangdong Huizhou combined-heat-and-power plant entered commercial operation with two GE Vernova hydrogen-ready 9HA.01 combined-cycle units. Within the next two years, both gas turbines are expected to burn up to 10% by volume of hydrogen blended with natural gas.