Exemplary stakeholder collaboration and advanced energy storage system to enable integration and optimization of distributed energy resources
Hitachi ABB Power Grids'' e-meshTMPowerStoreTMbattery energy storage system (BESS) is a critical part of the VPP infrastructure, providing grid stability by balancing intermittent generation with smart and dynamic loads.
"Singapore operates one of the most reliable electricity networks in the world," said Nirupa Chander, Country Managing Director of Hitachi ABB Power Grids in Singapore. "This project is a good example of how multiple stakeholders i.e. the government (EMA), academia (NTU), industry (Sembcorp) and technology providers like us collaborate to deliver innovative solutions and accelerate the energy transition for a greener future," she added.
"Selecting the right technology partner is crucial for the project''s success and we are pleased to work with Hitachi ABB Power Grids, a recognised leader in power technologies," said Mr Matthew Friedman, Sembcorp''s Chief Digital Officer. "This marks a key milestone in the VPP project, as energy storage is critical to the efficient integration of green energy into Singapore''s power grid," he added.
"To meet the carbon emission standards of the future, Singapore will have to tap on all renewable energy sources, relying on artificial intelligence and smart solutions to better coordinate and manage all its energy sources efficiently," said NTU''s Senior Vice President (Research) Professor Lam Khin Yong. "The Virtual Power Plant (VPP) is a key project that will allow efficient modelling and innovative features of these emerging technologies to be validated," he added.
The VPP will enable electricity produced from Distributed Energy Resources (DERs), like solar and other green sources, to be integrated intelligently, simulating a utility scale power system. Using real-time information, the VPP will optimise the power output of these resources located across the island. Energy fluctuations resulting from solar intermittency will be balanced automatically via the VPP.
This project builds on Hitachi ABB Power Grids'' global Grid Edge Solutions footprint of more than 500 megawatts (MW) and 200 references. The business'' technology has enabled customers to create economic, social and environmental value by unlocking new revenue streams, maximizing renewable integration, and lowering carbon emissions.
Singapore''s government and Energy Market Authority (EMA) have announced power sector and grid enhancements, including a possible expansion of Southeast Asia''s biggest battery storage plant.
In a speech at the Singapore International Energy Week trade event on Monday (21 October), Gan Kim Yong, the city-state''s deputy prime minister and minister for trade and industry, affirmed a commitment to peaking Singapore''s emissions by 2030 and achieving carbon neutrality by 2050.
"This will not be easy, given our limited land surface for solar deployment and the lack of wind or hydro-electric power," the minister said.
The proposed solutions include enabling more energy imports from abroad, and relying on a broad range of technologies within Singapore''s borders, as well as upgrading the grid and speeding up connection times for new energy projects.
Nonetheless, solar PV is the "most viable source of renewable energy domestically," Gan Kim Yong said, and of a targeted 2GWp of solar capacity by 2030, Singapore is at 1.35GWp today, a big jump from just 260MWp at the time the target was set in 2019.
However, the minister said there is a need to "step up energy storage systems to manage solar intermittency."
Talks are currently ongoing with Sembcorp, the engineering conglomerate behind the 200MW/285MWh battery energy storage system (BESS) installation on Singapore''s Jurong Island.
Officially inaugurated in early 2023 on the island which houses much of Singapore''s industrial and energy infrastructure, the BESS project is the biggest of its kind in Southeast Asia.
It was developed by Sembcorp in collaboration with the Singapore Energy Market Authority (EMA) after winning an EMA contract through a solicitation. With that one project, Singapore its 200MWh by 2025 energy storage target and minister Gan Kim Yong said it helps to "counteract sharp and unexpected drops in solar energy."
"EMA and Sembcorp are in discussions to expand the system and increase the land use density in tandem," Yong said.
Along with discussion of Singapore''s plans to import 6GW of low-carbon energy by 2035—so far 2GW of conditional licenses have been granted including AAPowerLink from Australia—and mention of other areas such as alternative fuels, natural gas for balancing the network and upgrading the grid, Gan Kim Yong said behind-the-meter (BTM) battery storage systems will be allowed to participate in demand response through an EMA programme for the first time.
The DR programme incentivises customers to reduce their draw of power from the grid during peak times. In addition to battery storage, it will be opened up to electric vehicle (EV) charger infrastructure, the minister said.
In a separate announcement also made on Monday, the Energy Market Authority discussed initiatives to enable greater uptake of distributed energy resources (DERs), including rooftop PV, behind-the-meter batteries, and smart EV chargers, on the Singapore grid.
A Future Grid Capabilities Roadmap is currently being written in partnership with state-owned electricity and gas distribution company SP Group, the EMA said. This will identify and explore options such as the use of DERs for energy, ancillary services, and demand response and distributed energy resource management systems (DERMS).
The EMA is also establishing a ''regulatory sandbox'' for virtual power plants (VPPs). VPPs enable the aggregation of DERs to provide a single source of energy, ancillary services and demand response to the grid.
Industry proposals for the sandbox are being sought, with the EMA accepting submissions until 31 December 2024. At the same time, the authority has signed a Memorandum of Understanding (MoU) with SP Group to deploy a 15MW VPP initially comprising solar PV and battery storage. It would participate in the electricity market and explore how VPPs can make the biggest overall contribution to decarbonisation and modernising the grid.
Plans to also expand a vanadium redox flow battery (VRFB) installation on Jurong Island were announced on Tuesday (22 October) by flow battery manufacturer VFlowTech and its materials and engineering partner Advario.
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