Pulau Ubin Micro-grid Test-Bed
EMA is piloting a micro-grid test-bed at
the jetty area of Pulau Ubin, an island north-east of Singapore. This test-bed
aims to assess the reliability of electricity supply within a micro-grid
infrastructure using intermittent renewable energy sources such as solar photovoltaic (PV) technology.
Unlike conventional power generators, solar
power is intermittent in nature as the amount of energy produced is dependent
on weather conditions. This
challenge needs to be carefully managed to ensure reliability of supply to consumers,
especially when solar forms an increasing part of Singapore’s overall energy
mix in future.
Since October 2013, about 30 participants from around
the jetty area have signed up to voluntarily take part in this test-bed. They
include various businesses (e.g. restaurants and bicycle shops),
telecommunications base stations, residential premises and government agencies.
Thanks to this test-bed, they have
been enjoying a cheaper, cleaner and
more reliable electricity supply from a micro-grid incorporating clean and renewable
energy sources such as solar PV technology. In the
past, residents and businesses at the jetty area of Pulau Ubin relied on their
own diesel generators for their electricity needs.
The test-bed will also provide a platform for
local companies and research institutions to develop and pilot energy-related
technologies and solutions. This will help build local capabilities in the area
of micro-grid design, energy management and energy storage. The test-bed will
also showcase how such micro-grid technologies and solutions could be adopted
for off-grid communities in the region.
The micro-grid was built by a local
consortium comprising Daily Life Renewable Energy Pte Ltd (DLRE) and OKH
Holdings Pte Ltd (OKH). The latter is a wholly-owned subsidiary of SGX
mainboard-listed OKH Global Ltd.
Artist Impression of the Pulau Ubin Micro-grid Test-bed
Does the Current Test-Bed Cover?
micro-grid test-bed will bring about more cost-competitive and cleaner electricity,
with improved scalability and reliability for both residents and businesses in
- Clean energy - The micro-grid test-bed incorporates clean and renewable energy sources such as solar PV technology.
- Reliable electricity supply - Continuous and reliable supply of electricity to end-users.
- Cost-competitive electricity - Electricity is provided by the consortium at a competitive price of $0.80 per kWh that is lower than what end-users paid when they used their own diesel generators. Any changes to the prices require EMA's approval.
- Scalability - End-users can consider higher load electrical appliances such as refrigerators and air-conditioners. This will enable businesses to expand their operations and operating hours.
Phase 2 of the Pulau Ubin Micro-grid Test-bed
Phase 2 of the test-bed will leverage the Phase 1 micro-grid infrastructure as a platform for companies and research organisations to develop and pilot energy-related technologies. EMA launched a Request-for-Proposal (RFP) for technologies in areas such as energy analytics, energy storage and grid asset management, and awarded two projects in 2015. More information is available here.
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