Malaysia’s solar capacity is growing faster than the national grid can absorb it — and that mismatch is starting to reshape how businesses think about energy costs. A recent industry report puts the country’s immediate battery storage shortfall at roughly 2.5GW, a gap that’s expected to widen as more large-scale solar comes online — and it’s creating a practical opening for businesses that act at the site level now.
Key Takeaways
For solar developers and energy-conscious businesses, this isn’t just an abstract grid statistic — it’s a signal about where investment, tariffs, and opportunity are heading over the next few years. These are industry projections rather than fixed outcomes, and they’re worth revisiting as programmes like MyBEST evolve — but the direction is clear enough to plan around.
As more solar capacity connects to the grid, electricity supply becomes less predictable — solar generation peaks during the day and drops to zero at night, which creates swings that the grid needs to absorb. Battery storage smooths out these swings by storing excess solar generation and releasing it when needed.
Industry analysis from Kenanga Investment Bank puts Malaysia’s current shortfall at about 2.5GW of the storage capacity needed to comfortably manage existing and near-term solar generation. Left unaddressed, this gap constrains how much new solar can be connected without compromising grid stability — which is exactly why on-site storage at the business level is becoming more relevant, not less.
Malaysia’s installed solar capacity currently stands at roughly 4.5GW. With the fifth Large Scale Solar programme (LSS5) and its extension LSS5+ progressing, that figure is projected to rise to around 8.5GW in the medium term.
Industry benchmarks suggest that once total solar capacity crosses 6.0GW, the grid needs at least 3.0GW of storage to remain stable — and as a general rule, every 1GW of new solar capacity requires roughly 0.5GW of supporting storage.
Current programmes don’t come close to closing that gap:
|
Programme |
Storage Capacity |
|---|---|
|
MyBEST (2025 award) |
400MW / 1600MWh |
|
TNB pilot project |
100MW |
|
Estimated gap at 6.0GW+ solar capacity |
~2.5GW immediate shortfall |
This shortfall is expected to push the government toward more aggressive MyBEST tender rounds in the coming years — but for businesses, waiting for grid-level fixes isn’t the only option.
While the grid-level gap plays out over years, industrial and commercial electricity users are already acting at the site level through the Self-Consumption (SELCO) framework. Medium-voltage (MV) industrial sites are increasingly installing on-site battery storage to perform peak shaving — reducing electricity draw from the grid during high-demand periods.
For high-energy-use businesses, storage has moved beyond being a sustainability initiative. Under revised utility tariff structures, maximum demand charges can represent a significant share of a factory’s electricity bill. A well-sized battery system can smooth out demand peaks and directly reduce that cost line.
|
Without On-Site Storage |
With On-Site Battery Storage |
|
|---|---|---|
|
Peak demand charges |
Full exposure to peak tariff rates |
Reduced, by smoothing demand during high-usage periods |
|
Grid dependency during peak hours |
High |
Lower, supplemented by stored solar energy |
|
Exposure to future tariff changes |
Direct |
Partially buffered |
|
Payback period |
N/A |
Shortening, as battery prices fall |
One factor working in businesses’ favour is price. Global battery supply currently exceeds demand, and battery pack prices have fallen from around USD100/kWh to approximately USD95/kWh (roughly RM407 to RM387).
Combined with rising electricity costs for high-demand industrial users, this is shortening the investment payback period for on-site storage — making now a reasonable time to evaluate a system, even before the broader grid-level gap is resolved.
If you’re weighing whether a battery storage system is worth it for your site, these are the questions worth working through first:
An energy audit is the most reliable way to answer these with real numbers rather than estimates.
Malaysia’s storage shortfall is a national problem, but it creates a clear opportunity at the site level — especially for industrial operators facing rising peak demand charges. Ray Go Solar’s BESS solutions and commercial & industrial solar services can help assess your site’s peak shaving potential and design a system sized to your actual demand profile. Contact our team for a site assessment.
Ray Go Solar Holdings Berhad is a SEDA-recognised, ISPQ-certified solar EPCC company with over a decade of experience delivering residential and commercial solar and storage systems across Malaysia.
SELCO (Self-Consumption) allows industrial and commercial users in Malaysia to generate and consume their own solar energy on-site, often paired with battery storage for peak shaving.
This depends on the site’s peak demand profile and solar system size — an energy audit is typically used to size storage correctly.
Falling battery prices are shortening payback periods, but the trend needs to be weighed against Malaysia’s separate battery cost pressures expected from 2027 (see our related article on China’s VAT rebate removal). For many industrial users, current tariff savings already justify moving ahead.
The 2.5GW figure refers to grid-level and utility-scale storage. Residential and small commercial systems are affected indirectly, through overall market pricing and equipment availability.
