TW Solar 510W TWMNH Series N-Type TOPCon Dual Glass Bifacial Module - CEC Approved
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The TW Solar 510W TWMNH-54HD510 is a bifacial panel at a mono-facial price, so you get a second surface making power without paying a premium for it.
It is the value pick in our range for homes, businesses and ground mounts where the back of the panel can see reflected light.
Glass on both sides means the rear of the panel works too. Light bouncing off a light roof, concrete, water or open ground goes back up through the rear glass and adds output the front alone would never make. Tongwei rate the rear side at 80% of the front, and under their test conditions the panel makes up to 563W against its 510W front-only rating.
Even ignoring the back entirely it is a strong panel: 22.9% efficiency from N-type TOPCon cells, salt mist rated to the highest level for coastal sites, and tested against 45mm hail at 110km/h. Tongwei make more solar cells than anyone else in the world and own every step from raw polysilicon to finished panel, which is how a panel this good lands at this price.
Clean Energy Council (CEC) Approved Product: What's This?
Important Notice
Due to the fragile nature and awkward shape of glass-fronted solar panels, freight conditions can vary and will usually ship on pallets. Free delivery applies to a minimum order of 3 panels to Metro Business Addresses with unloading facilities. Residential and remote/regional addresses may incur additional charges, such as trucks using tailgate platforms.
Please Contact Us before placing an order to determine the appropriate shipping method to ensure safe delivery.
Main Features
Power From Both Sides: the rear glass collects reflected light and adds to what the front produces, rated at 80% of front-side output, which takes the panel to as much as 563W under Tongwei's bifacial test conditions.
510W and 22.9% Efficiency: strong front-side numbers before the rear side is counted at all, from 108 N-type TOPCon cells.
Glass Front and Back: two sheets of 2.0mm heat strengthened glass instead of a plastic backsheet, so there is nothing to yellow, crack or let moisture in over the years.
Built for the Coast: salt mist rated to level 8, the highest there is, so it suits beachside and marine sites where ordinary panels corrode early.
Tested Against Real Hail: 45mm hailstones at 110km/h, well beyond the standard test, which matters after the storms of recent summers.
Holds Up in Heat: a -0.28% per degree power coefficient and a 1500V system rating, with an operating range from -40°C to +70°C.
Only Ever Gains on Its Rating: power selection tolerance is 0 to +3W, so a panel is never shipped under its nameplate figure.
25 and 30 Year Warranties: 25 years on the product and 30 years on power output, from a manufacturer that makes its own cells rather than buying them in.
CEC Approved for Rebates: listed on the Clean Energy Council approved modules register to 13 December 2027, so it is eligible for STC rebates on an accredited install.
What This Solves
Budget That Will Not Stretch: bifacial construction and dual glass usually cost more, and here they do not, so the money goes further without dropping to a lesser panel.
Wasted Reflected Light: on a light coloured roof, a shed, a carport or a ground mount, the light bouncing back up is free energy that a normal panel simply cannot use.
Coastal and Harsh Sites: level 8 salt mist and glass on both faces suit locations that chew through standard panels.
Hail Risk: tested at 45mm and 110km/h, so a summer storm is far less likely to end the system.
Commercial and Ground Mount Jobs: 36 panels a pallet and 864 to a container, with warranty terms written for projects as well as houses.
What's Included
- TW Solar TWMNH-54HD510 510W bifacial solar panel, supplied in the quantity you select above
- Factory fitted IP68 junction box with three bypass diodes
- 1200mm output cables with MC4-EVO 2 connectors
Quick Specs
- Power Output: 510W (STC), 385W (NMOT)
- With Rear-Side Gain: up to 563W (BNPI)
- Bifaciality: 80 ± 5%
- Module Efficiency: 22.9%
- Cell Type: N-Type Monocrystalline TOPCon (TNC)
- Number of Cells: 108 (6 x 18)
- Dimensions: 1961 x 1134 x 30 mm
- Weight: 27 kg
- Front Glass: 2.0 mm anti-reflective heat strengthened
- Rear Glass: 2.0 mm heat strengthened
- Frame: Anodised aluminium alloy, black
- Maximum Power Voltage (Vmp): 34.19V
- Maximum Power Current (Imp): 14.92A
- Open Circuit Voltage (Voc): 40.42V
- Short Circuit Current (Isc): 15.95A
- Temperature Coefficient of Pmax: -0.28%/°C
- Maximum System Voltage: 1500V DC
- Maximum Series Fuse Rating: 30A
- Snow / Wind Load: 5400 Pa / 2400 Pa
- Operating Temperature: -40°C to +70°C
- Power Selection Tolerance: 0 to +3W
- Junction Box: IP68 rated, 3 diodes
- Cables: 1200 mm, MC4-EVO 2 connectors
- Fire Class Rating: Class C
- Salt Mist: Level 8 (highest rating)
- Hail Tested: 45 mm at 110 km/h
- Packaging: 36 per pallet, 864 per 40' HC container
- Product Warranty: 25 Years (15 years for ground mounted projects above 300kW)
- Performance Warranty: 30 Years
- CEC Approved: to 13 December 2027, IEC 61215-2021
About The Brand
TW Solar (Tongwei) makes more solar cells than any other company in the world, with over 140GW of capacity as at 2024. They are one of the few manufacturers that owns the whole chain, from refining the raw polysilicon through to assembling the finished panel, and that chain has been independently checked by TÜV Rheinland. Owning every step is why they can price the way they do and still stand behind a 30 year performance warranty.
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