The Energy Market Authority (EMA) of Singapore has announced a new two-tier emission standard for all new and repowered fossil fuel-fired power-generation units. This initiative aims to improve carbon efficiency and support the transition towards cleaner energy in Singapore.

Starting in 2024, the new Code of Practice will enforce emission standards at the unit level for new and repowered generation units that applied for operational licenses on or after January 9, 2023. The Tier 1 emission standard requires these units to maintain an emission intensity of 0.355 tonnes of carbon dioxide equivalent per megawatt-hour of net electrical output. This standard demands about 10% greater carbon efficiency compared to existing generation units in Singapore.

For generation units anticipated to operate periodically, operators have the option to comply with the Tier 2 standard, which involves adhering to a yearly emission cap. Both tiers will mandate that units are at least 30% hydrogen-ready by volume, enabling future retrofitting to achieve 100% hydrogen readiness. This strategic move is part of Singapore’s broader plan to incorporate hydrogen as a sustainable energy source.

Currently, the power sector is responsible for around 40% of Singapore’s total carbon emissions, with natural gas accounting for 95% of the electricity generated. The government’s National Hydrogen Strategy envisions hydrogen fulfilling up to half of the country’s projected electricity demand by 2050, contingent upon advancements in technology and international collaboration.

Certain generation units, such as those in waste-to-energy incineration plants and standby generators used solely as power backups, may be exempt from the new emission standards. The EMA has indicated a commitment to periodically review and tighten these emission standards, ensuring that Singapore’s power sector remains aligned with the goal of achieving net-zero emissions by 2050.

As Singapore advances towards a sustainable energy future, these new standards signify a critical step in enhancing carbon management and reducing greenhouse gas emissions.