Weekend read: Southeast Asian interconnection

While near neighbors, the electricity generation of the countries of Southeast Asia couldn’t be further apart. Indonesia burns locally mined coal; Malaysia has reserves of oil and gas; and populous Singapore, Vietnam, and the Philippines depend on fossil fuel imports. They could all benefit from increased solar electricity but higher grid capacities and interconnection are key for an opportunity to unlock the power of the sun.

From pv magazine 10/22

The economies of Southeast Asia are growing, along with their demand for energy. In its “Southeast Asia Energy Outlook 2022” the International Energy Agency (IEA) noted that after a brief disruption due to the Covid-19 pandemic, energy demand in the region is expected to continue to expand by approximately 3% per year, with economic growth at 5% annually, through 2030.

These “tiger economies” remain reliant on fossil fuels for their energy supply. Three-quarters of the increase in energy demand anticipated by the IEA is forecast to be met by fossil fuels – resulting in a 35% increase in CO2 emissions. And carbon emissions are not the only problem. The IEA concludes that the region’s reliance on conventional energy results in a “worsening in its energy trade balance as fossil fuel demand outpaces local production.”

There are, however, positive trends emerging in the region in terms of the adoption of renewable energy – with grid enhancement and regional interconnectivity set to play a crucial role in these developments. The IEA observes that 40% of the $70 billion in energy investment that was made in Southeast Asia between 2006 and 2020 went towards “clean energy technologies – mostly solar, wind, and grids.”

An accelerated expansion of solar uptake in Southeast Asia remains key, with most countries making pledges to reduce emissions. Corporate electricity consumers in the region are also seeking to decarbonize and boost environmental, social, and corporate governance performance.

Interconnection plans

“Over the last five years we’ve definitely seen a lot of momentum in the region,” says Caroline Chua, who leads BloombergNEF’s Southeast Asia power and renewables research. “There has been a lot of interest from governments, financiers, developers… but on the ground, there are still challenges on the policy side, on the market development side, and even on the power market design aspect, to unlock the industry further.”

Chua notes the differing challenges that the expansion of solar faces in each country but says regional cooperation is under way to enhance grid interconnection and facilitate increased energy trading.

“There is the overarching discussion of the ASEAN power grid, which has been ongoing for several years,” continues Chua. “We are now starting to see some developments. They are connecting Laos, Thailand, Malaysia, Singapore. It is not specifically for solar but it could encourage more renewables development.”

Network needs are a common macro-trend in global energy markets. In September, advisory and risk management service provider DNV reported that 87% of the “energy leaders” it surveyed said “there is an urgent need for greater investment in the power grid.” Further, 76% of industry respondents reported that the availability of grid connection was a constraint in connecting renewable energy projects.

“We are now entering a paradigm shift and the industry must be prepared to work collaboratively to prepare our power systems for the future. To transition much faster, we have to integrate new technologies and encourage grid investment through forward-thinking policies and regulatory frameworks,” said Ditlev Engel, CEO of Energy Systems DNV, in a statement.

Interconnection procurement

Enhanced interconnection between ASEAN countries has been pursued since 2016, with the joint goal of enhancing “energy security, accessibility, affordability, and sustainability for all,” according to the initiative’s stated aims.

The program, called the ASEAN Plan of Action for Energy Cooperation (APAEC), has reached phase two. The plan runs from 2021 to 2025 and includes a secondary goal of “accelerating energy transition and strengthening energy resilience through greater innovation and cooperation.” And there are clear benefits for the program for renewables uptake in the region.

Singapore remains an economic powerhouse in the Southeast Asian region, and a financial hub. The city state is reliant on gas imports for 95% of its electricity generation. And with gas prices high, due to Russia’s invasion of Ukraine, electricity prices in Singapore are rising – in Q3, 2022 the regulated residential price rose to around SGD 0.302 ($0.212)/kWh.

Singapore is adopting solar locally and its Energy Market Authority (EMA) is pursuing a target of 1.5 GW of PV by 2025 and at least 2 GW by 2030. While meager, these goals are dictated by a lack of land, the EMA notes, with PV to “likely constitute only about 3% of the country’s total electricity demand in 2030.”

To overcome this challenge, in October 2021 the EMA launched its first request for proposal for the import of part of an eventual 4 GW of “low carbon electricity imports into Singapore” by 2035. The first of these imports began back in July, with up to 100 MW of hydropower set to be imported from Laos via the Thailand-Malaysia-Singapore interconnection – the LTMS-PIP.

The potential of solar exports to Singapore has garnered considerable interest, including in Indonesia, reports JY Chew, the head of Asia renewables research at Rystad Energy. “Indonesia is in a very good position to take advantage of this,” says Chew. “It has lots of land on islands nearby to supply Singapore with renewable energy.” Solar projects established in Indonesia for export to its prosperous neighbor will likely be bolstered with energy storage to maximize the number of hours each day solar could be exported via an expensive interconnector – supplying something approaching baseload power.

pv magazine print edition

The next edition of pv magazine, due out on Nov. 8, is set to consider the rise in popularity of baseload solar PPAs in Germany.

Rystad’s Chew adds that Vietnam could also look to export solar in a move which may, among other commercial aspects, ease curtailment issues in southern and central Vietnam.

An alternative to Indonesia and Vietnam lies further afield, in Australia. There, the hugely ambitious Sun Cable project has drawn the support of high-profile-backer billionaires Andrew “Twiggy” Forrest and Mike Cannon-Brookes, through their venture arms.

Yet while there is little doubt that Australia could generate low-cost solar in its far north, for export to Singapore, the interconnection it would require is truly immense. “The Sun Cable project in Australia is just too long,” says Chew. “It’s a 4,000 km subsea cable through Indonesia. But, surprisingly, that project has been passing through a number of approval stages and it somehow might pull through.”

The free flow of renewable energy is not a given everywhere, however. In October 2021, Malaysia made moves to halt the export of renewable electricity to Singapore – preferring instead to see its locally produced renewables used to meet national goals. Malaysian news agency Bernama reported that the country’s “Guide for Cross-Border Electricity Sales” was being reviewed regarding that aim, and that fees for “wheeling” electricity across its grid to Singapore, over a two-year trial period, will be $0.0228/kWh.

Vietnam’s cautionary tale

One of the outstanding solar markets in the region, and indeed globally, in recent years has been Vietnam. On the back of its national feed-in tariff program and relaxed foreign investment laws, Vietnam’s PV market exploded. The country installed just 200 MW of solar in 2018, a figure which rocketed to 5 GW in 2019, and 12 GW in 2020, according to BloombergNEF figures.

“The two solar FIT schemes drove two consecutive solar booms in the country,” says BloombergNEF’s Chua. “The supporting policies have ended and because of the current power market structure, with one single off-taker – and that there is no policy for them to purchase solar – there is now no way for developers to strike a power purchase agreement to sell their solar electricity to the grid.”

Chua notes that behind-the-meter projects are now the only ones moving forward and it appears that the next round of Vietnam’s power development plans are progressing slowly, with “very little solar ambition in the drafts.”

Vietnam’s solar could, in fact, be a victim of its own overnight success. Dharmendra Kumar, a solar analyst with IHS Markit – now a part of S&P Global – says that he understands that some 3 GW to 3.5 GW of the projects developed under Vietnam’s FIT programs are not grid connected or generating at full capacity.

“What is happening now is that the government is doing checks, one after the other, on all of the projects,” says Kumar. “I think that not all of them have been installed, or maybe were installed in a hurry or in a place where nearby grid connection is not available. Putting in the grid connection will cost and will make the projects economically unviable. There was a rush to install.”

This post appeared first on PV Magazine.

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