Build your solar plan — no payment until you approve
Configure solarFloating Solar & Aquavoltaics Malaysia
Malaysia has many ex-mining pools, reservoirs, and aquaculture ponds that can generate clean energy through floating solar. No land required — just water.
Overview
What Is Floating Solar?
Floating solar — also called floatovoltaics or aquavoltaics — is a solar power technology where photovoltaic panels are mounted on buoyant platforms that float on water bodies. Instead of occupying agricultural land or rooftops, these systems use otherwise underutilised water surfaces to generate clean electricity.
The panels float on high-density polyethylene (HDPE) pontoons, anchored to the water body floor or shoreline using mooring cables. Waterproof cabling carries electricity to shore-based inverters and grid connection points. Modern floating solar systems are engineered to withstand waves, wind, and tropical storms.
The global floating solar market is growing quickly. Asia leads adoption — China, Japan, South Korea, and India have the most installed capacity. Malaysia is well-positioned to accelerate its own floating solar pipeline given its abundant water bodies, high solar irradiance, and growing renewable energy targets under the National Energy Transition Roadmap (NETR).
Advantages
Why Floating Solar?
No Land Required
Floating solar uses water surfaces that are otherwise unproductive. In land-scarce Malaysia, this preserves agricultural and forest land for their primary purposes.
Higher Efficiency
Water cools the underside of panels through evaporation and conduction. Cooler panels perform better — solar panels lose about 0.4% efficiency per degree Celsius above 25°C.
Reduces Evaporation
Panels shade the water surface, reducing evaporation. This is particularly valuable for reservoir water management and aquaculture operations.
Preserves Agricultural Land
Every hectare of floating solar installed is one hectare of Malaysia's precious agricultural land that doesn't need to be converted. Critical for food security.
Ideal for Mining Pools
Malaysia has many ex-mining pools in Perak and Selangor — degraded land with little alternative use. Floating solar transforms these into productive energy assets.
Scalable to Utility Size
Floating solar can scale from 100kW on a small aquaculture pond to 500MW+ on large reservoirs. Malaysia's Pergau and Kenyir hydroelectric reservoirs represent massive potential.
Local Context
Floating Solar in Malaysia
Malaysia's floating solar development is still in its early stages. Combining hydro and floating solar creates a "hydro-floating solar hybrid" — solar generates power during the day while water reserves are conserved for peak-demand turbine generation.
Ex-mining pools in Perak (particularly around Taiping and Ipoh) and Selangor (Rawang, Batang Berjuntai) represent some of the most accessible near-term floating solar sites. These water bodies are often privately owned, have no competing agricultural use, and are located close to existing grid infrastructure.
Aquaculture ponds in coastal areas of Johor, Perak, and Kelantan present another opportunity — floating panels over fish and shrimp ponds can reduce algae blooms, stabilise water temperature, and generate electricity simultaneously.
Under Malaysia's Large Scale Solar (LSS) programme and the Corporate Renewable Energy Supply Scheme (CRESS), floating solar projects can qualify to sell electricity to utilities or directly to corporate buyers under Virtual PPAs.
Technical
Technical Considerations
Anchoring Systems
Pontoons are anchored using tension mooring lines attached to concrete anchors or driven piles on the water body floor. The system must accommodate water level fluctuations of 1–5 metres for reservoirs.
Water Depth Requirements
Minimum water depth of 1 metre is recommended. Shallower water complicates anchoring and increases sediment disturbance risk. Most Malaysian mining pools and reservoirs exceed this threshold.
Environmental Impact
Environmental impact assessment (EIA) requirements depend on project size and state. Key concerns include shading impact on aquatic vegetation, dissolved oxygen levels, and wildlife access to water bodies.
Fish Habitat Compatibility
Floating solar covering less than 30% of a water body surface is generally considered compatible with fish habitat. Above this threshold, careful monitoring of water quality parameters (DO, pH, temperature) is essential.
Comparison
Floating Solar vs Rooftop vs Ground-Mount
| Factor | Floating Solar | Rooftop Solar | Ground-Mount |
|---|---|---|---|
| Land Required | None (water body) | None (existing roof) | Yes (dedicated land) |
| Installation Cost | High (RM 3.5–4.5/W, market estimate) | Medium (about RM 2.4/W before SST, commercial) | Medium (RM 2.8–3.8/W) |
| Energy Yield | Higher (site-dependent) | Standard | Standard |
| Scalability | Medium to Utility | Small to Large | Medium to Utility |
| Maintenance | Moderate (boat access) | Easy | Easy |
| Evaporation Reduction | Yes | N/A | N/A |
| Environmental EIA | Depends on size and state | Not required | Usually required |
| Best For | Mining pools, reservoirs | Factories, commercial | Open land, solar farms |
FAQ
Frequently Asked Questions
What is floating solar?
Floating solar (also called floatovoltaics or aquavoltaics) is a solar power system where panels are mounted on buoyant platforms that float on water bodies such as lakes, reservoirs, mining pools, and dams. The water can cool the panels, which may improve energy output compared to land-based systems (varies by site).
Where can floating solar be installed in Malaysia?
Suitable water bodies in Malaysia include ex-mining pools in Perak and Selangor, reservoirs, hydroelectric dam catchments (e.g., Pergau), aquaculture ponds, and industrial retention ponds. The water body must be at least 1 metre deep and relatively calm.
Is floating solar more expensive than rooftop solar?
Yes. In the cost comparison on this page, floating solar is about RM 3.5–4.5/W against about RM 2.4/W for commercial rooftop solar (before SST), due to the specialised floating platforms, anchoring systems, and waterproof cabling required. However, the higher energy yield and lack of land cost can offset this premium over the project lifetime.
Does floating solar harm aquatic life?
When properly designed, floating solar has minimal impact on aquatic ecosystems. Panels shade the water, reducing algae growth and evaporation. Fish habitat compatibility depends on the water body type and coverage percentage. Environmental impact assessments (EIA) are required for larger projects.
How long do floating solar systems last?
Floating solar systems are designed with a 25–30 year lifespan, similar to land-based systems. Pontoons are typically made of HDPE (high-density polyethylene) rated for UV exposure and water contact. Annual maintenance includes cleaning, mooring checks, and electrical inspections.
Can floating solar be combined with aquaculture?
Yes — this is a growing application in Asia called aquavoltaics. Solar panels are installed on fish or shrimp farming ponds, shading the water to reduce evaporation and algae, while generating electricity. Malaysia's extensive aquaculture industry makes this a promising area for development.
Own a Water Body? Explore Floating Solar
Own a mining pool, reservoir or aquaculture pond? Send us your water body details and TNB bills. The commercial site survey is RM500, fully credited to your project when you proceed.
