Singapore is at the heart of an evolving regional power grid which is poised to lower the share of LNG-fuelled power generation. If all proposed interconnections get built, they could unlock up to 25 GW of renewable and energy storage capacity worth over $40 billion, Rystad Energy reckons.
Today, over 96% of Singapore’s electricity is generated by burning natural gas which needs to be imported as LNG. Yet, Rystad analysis finds that importing electricity through the regional grid is cost-effective for the city state and could help reduce CO2 emissions by 13 million tons per year.
Higher load factor helps reduce electricity cost
Though CCGT are flexible and reliable in terms of operation, comparing the levelized cost of electricity (LCOE) reveals that electricity imports via ASEAN interconnectors may offer a more cost-effective alternative to building new domestic CCGT capacity. Singapore’s Electricity Market Authority (EMA) current regulatory framework require projects to reach an annual load factor of at least 60% within five years of commercial operation. For project developers there is a strong economic incentive to exceed this target.
Raising the load factor target from 60% to 100% could lower the overall LCOE, as this helps spread transmission costs more equally. This impact is particularly significant in countries such as Malaysia (Sarawak), Cambodia and Vietnam, where long transmission distances amplify cost optimization benefits particularly for hydropower projects
Solar-plus-storage hybrid systems, with optimized direct current/alternating current (DC/AC) configurations and appropriately sized battery energy storage systems (BESS), can already achieve load factors above 90%. By integrating solar and BESS technologies with the necessary backups, these systems can reach the level of reliability required by Singapore’s EMA and could be comparable to other dispatchable energy sources.
“Hybrid systems could deliver lower LCOEs than many in the industry currently anticipate. Singapore, strategically positioned at the heart of this evolving energy system, stands to gain significantly,” said Rystad’s renewables analysts Nevi Cahya Winofa.
