Have to read below in order to answer. As this is the "Our Key Targets for the Green Plan" (https://www.greenplan.gov.sg/targets)

Green Energy

Play active and important roles in fulfilling two international goals

- The International Civil Aviation Organizations aspirational goals of 2% annual fuel efficiency improvement from now to 2050 and carbon neutral growth from 2020

- The International Maritime Organizations target to reduce greenhouse gas (GHG) emissions from international shipping by at least 50% by 2050 compared to 2008 levels, and to phase out such GHG emissions in this century

2030 targets:

- Increase solar energy deployment by five-fold to at least 2 GWp, which can meet around 3% of our 2030 projected electricity demand and generate enough electricity to power more than 350,000 households a year (1.5 GWp by 2025, which can meet around 2% of our 2025 projected electricity demand and generate enough electricity to power more than 260,000 households a year)

- 200 MW of energy storage systems deployment beyond 2025, which can power more than 16,000 households a day

- Best-in-class generation technology that meets heat-rate/emissions standards and reduces carbon emissions

- Diversified electricity supply with clean electricity imports

In order to achieve the 2030 targets, other than using solar panels, what different idea is there to help achieve the 2030 target?