The PDP8 which was approved in mid-May for the first time has introduced a new generation source called “flexible generation” into the future capacity mix, starting with 300MW by 2030 and increasing significantly up to 46,200MW by 2050. This presents opportunities for Wärtsilä to tap into the trend of flexible generation in Vietnam.

Wärtsilä has actively promoted flexible ICEs in the Vietnam market

Since its inception in Vietnam in early 2000s, Wärtsilä has successfully built around 10 power plants running on internal combustion engines (ICEs) in Vietnam, supporting industrial customers with reliable electricity. When the first feed-in tariff (FiT) for solar was issued in 2017, the company foresaw that there will be a strong demand for a new source of flexible generation in the power system as the share of renewable energy increases in the future.

Already from 2018, Wärtsilä engaged with all the stakeholders in the industry, including policymakers and private sector to share their global experience in modelling power systems, to recommend a decarbonization roadmap, to raise the importance of adding flexible assets into the system, and to introduce the latest ICE technologies and solutions.

“We are extremely glad to see that Vietnam has well recognised the importance of flexible generation in the PDP8 and the vital role that ICE as a flexible generation technology plays in supporting the country's energy transition," said Thanh Pham, a country manager of Wärtsilä.

Flexibility is critical for any power system with a high share of renewables. Flexible power plants running on ICEs are needed to balance the intermittency of renewables and ensure the system stability when there is no sun or wind for several hours and days. Currently, the North of Vietnam is experiencing a short-term challenge to meet its electricity demand, which could have a great impact on the economic growth of the region.

“Wärtsilä has the track-record and proven solutions to respond to challenges like this. Over the last few years, we have built many modular ICE power plants in the nearby markets such as Indonesia, the Philippines, Myanmar and Cambodia on a fast-track basis to help alleviate the power shortage issue," Thanh added.

The multi-unit ICE power plants to provide operational flexibility to the power system

Vietnam is clearly the hotspot in the Southeast Asia region that has one of the highest electricity demand growths and also the fastest renewable energy penetration over the last five years. Asia is also a significant market for Wärtsilä as the company has installed about 2,200 power plants running on ICEs to provide fast electricity supply to meet the increasing demand and also balancing capacity to support the stability of the power systems.

Last October, Wärtsilä announced that the company would build a new 100MW gas power plant using 10 Wärtsilä 34SG ICEs in Japan. The fast-starting ICE engines will provide the grid balancing and peaking capabilities needed as Japan is aiming to increase its share of energy from renewable sources to 36-38 per cent by 2030.

The plant will participate in the new cross-regional balancing, which was launched in 2021 by the governmental authority to bridge the gap between electricity demand and supply. It will also replace a 100MW combined cycle gas turbine (CCGT) that was formerly located on the project site.