An Asean-wide electricity grid holds the promise of providing cheaper and cleaner electricity across the region but faces challenges due to poor grid connectivity and the lack of long-term demand for green electricity. South-east Asia struggles with a green investment gap exceeding US$210 billion annually, primarily due to the perceived higher risk associated with green investments. The higher cost of capital for renewable energy projects in the region, caused by this risk, poses a significant barrier to the trade of low-carbon electricity. Singapore, which heavily relies on natural gas for electricity, aims to meet its 2030 climate targets by importing clean energy and championing the creation of an Asean grid. Innovative financing methods like blended finance and platforms such as Bayfront Infrastructure Management are highlighted as solutions to close the investment gap. The insurance industry is also identified as crucial for de-risking projects in the Asean grid. Additionally, the Government of Singapore has initiated the $10 billion Future Energy Fund to support projects involving nascent technologies. Despite efforts to de-risk projects, long-term contracts for buying imported green electricity are essential to secure financing. Recognition of certificates from cross-border electricity trade poses a challenge for companies in committing to these contracts and meeting sustainability goals. Overall, a collaborative effort from governments, insurers, and private entities is necessary to overcome investment challenges and accelerate the transition to clean energy in South-east Asia.