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Beyond installation: The new economics of rooftop solar

Image source: PropertyGuru

In 2011, when Malaysia’s Feed-in Tariff (FiT) concept was launched, rooftop solar in the country was largely confined to early adopters, a small group of energy-conscious homeowners and businesses willing to embrace a technology that had yet to enter the mainstream. The programme was positioned as a niche investment mechanism at a time when public awareness was limited, and the emerging rooftop solar systems were marketed primarily to environmentally conscious homeowners and a handful of commercial pioneers.

This evolution was underpinned by successive government initiatives: following the launch of FiT, the government launched the Net Energy Metering (NEM) scheme in 2016, which encouraged residential users to consume solar-generated power first before offsetting their bills with excess solar energy exported to the grid.

Later iterations of NEM, including NEM 2.0, continued to see strong demand from households; and by mid last year, so quickly was the NEM 3.0 quota exhausted that the Ministry of Energy Transition and Water Transformation (PETRA) had to urgently inject an extra 100MW into the residential quota. Within a few weeks, the residential quota was 99.8% fully subscribed, proving that Malaysians have an appetite for solar.

Bringing distributed energy closer to consumers

Building on the strong uptake of the NEM scheme, the government introduced Solar Accelerated Transition Action Programme (Solar ATAP) on 1 January 2026, continuing Malaysia’s rooftop solar journey with greater emphasis on self-consumption. Fast-forward to today, public response to these distributed systems has grown significantly, with 3,254.61MW of solar capacity reached as of April 2026.

As the rooftop solar framework evolves, Solar ATAP expands opportunities for participation among households and businesses by moving beyond the previous allocated quota system, with the programme introduced without a fixed national quota. The programme encourages consumers to generate and use more solar electricity where it is produced, while allowing surplus generation to be exported to the grid.

Speaking to Energy Watch, the Malaysian Photovoltaic and Sustainable Energy Industry Association (MPSEA) commented that the latest programme comes at a time when the market is more mature, although it also changes how consumers need to think about rooftop solar. Representing industry players within this ecosystem, MPSEA brings together nearly 300 members across the solar value chain, while advocating for industry development, sustainable energy adoption, and greater public awareness.

“The focus is increasingly on how much solar energy can be used directly on-site, making proper system sizing and an understanding of the customer’s consumption profile much more important. For businesses with significant daytime electricity demand, this can work relatively well because solar generation and consumption occur at similar times. For households, the situation can be different as many homes have lower electricity consumption during the day.”

“This is where storage, smart energy management and, eventually, more flexible energy-sharing mechanisms could become increasingly relevant. MPSEA sees Solar ATAP as part of this transition, but the programme should continue to be reviewed and refined based on actual market response to ensure the economics remain workable for consumers and industry players,” commented the association.

Rooftop solar ecosystem solutions beyond installation

As battery costs and technologies continue to develop, the economic case is likely to become more attractive over time. According to MPSEA, storage should be properly sized and applied according to the technical and economic needs of each user rather than approached as a one-size-fits-all solution.

“The decision should start with why the consumer needs a battery rather than assuming that every solar system requires one. For someone with high daytime consumption, much of the solar generation may already be consumed directly. For a household that produces excess solar during the day but consumes more electricity in the evening, storage may have a stronger use case.

“Consumers should consider their electricity consumption pattern, the amount of excess solar available, battery size and lifespan, degradation, warranty, safety, upfront investment, and the expected savings over the battery’s lifetime.”

For businesses especially, solar systems are increasingly seen as part of energy cost management and sustainability planning rather than something experimental. According to MPSEA, the local renewable energy industry has also matured considerably, with established technical capabilities across system design, installation, financing, operations and maintenance, energy management, and increasingly, battery storage.

However, there is still significant untapped rooftop potential, particularly within the residential and SME segments. With upfront costs remaining a barrier for some households and SMEs, financing and alternative ownership models could help make rooftop solar more accessible. The next stage is therefore to make participation easier, economically attractive and sustainable over the long term.

MPSEA also emphasised that solar providers must look beyond photovoltaic (PV) installation to assess customers’ broader energy needs, including consumption patterns, energy efficiency measures, electric vehicle (EV) charging and energy management systems. “Monitoring, alongside operations and maintenance (O&M) will also become more important as the number of installed systems grows. This means the relationship with the customer does not necessarily end once the system is commissioned,” stressed the association.

“As Malaysia’s electricity market develops further, providers may also have opportunities to support areas such as aggregation, energy sharing and other distributed-energy models. This will require the industry to develop capabilities beyond traditional solar engineering, including digital systems, data, storage, and energy-market knowledge,” added MPSEA.

The role and responsibility of industry

As rooftop solar becomes more widely adopted, a strong supporting ecosystem is needed to ensure consumers have access to credible expertise, suitable solutions, and reliable services throughout their solar journey.

“As the market grows, the responsibility of industry players also increases. The industry should not compete purely on price or by promising the shortest possible payback period. Systems should be properly designed according to the customer’s needs and consumption, with clear information provided on expected generation, savings, warranties and system performance.

“Equipment quality, workmanship, electrical safety and regulatory compliance must remain priorities. Strong after-sales service is equally important because a rooftop solar system is a long-term asset, not a one-off purchase.

“Industry players also have an important role in educating consumers, particularly as systems become more complex with batteries and energy management technologies. Maintaining high standards across the industry will ultimately protect consumers while strengthening confidence in the solar sector,” commented MPSEA.

A modernised grid for a successful ecosystem

The evolving relationship between consumers and the electricity grid calls for greater investment in a more flexible and resilient grid today. Beyond advancing Malaysia’s sustainability ambitions, strengthening the grid is also essential to ensuring a reliable, round-the-clock electricity supply in the years ahead. Supported by energy storage and smarter grid management, these improvements will help balance variable solar generation and maintain system reliability.

The challenge is therefore not only how much renewable energy Malaysia can generate, but also whether the grid is ready to accommodate and manage it.

“Grid capacity and connection limitations in certain areas can affect how much additional distributed solar can be accommodated. The challenge is therefore not only how much renewable energy Malaysia can generate, but also whether the grid is ready to accommodate and manage it.

Beyond physical infrastructure, the association also emphasised the importance of digital capabilities and greater visibility of available grid capacity and planned upgrades. These improvements would help industry players and consumers make more informed decisions as distributed solar adoption continues to grow. “At the broader level, rooftop solar policy, electricity tariffs and grid planning need to evolve together rather than separately,” added MPSEA.

As the market grows, it is also important to continue developing local capabilities and ensure Malaysian industry players can participate meaningfully in the next phase of the sector, including newer areas such as energy storage and digital energy solutions.

Ultimately, a more flexible and sustainable energy future will depend on consumers, industry players, and the grid evolving together. As MPSEA concluded, “the aim should be to create a rooftop solar market that can continue growing because it makes economic and technical sense, rather than depending indefinitely on incentives.”

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