Trinasolar 290W Honey Dual Glass N-type i-TOPCon Solar Module - Silver Frame Transparent BiFacial

• Manufacturer Trina Solar

The Trinasolar 290W Honey Dual Glass N-type i-TOPCon Solar Module is a compact, bifacial solar PV module designed for rooftops where reliability and long service life matter as much as upfront yield. With a 290W STC rating and up to 17.7% module efficiency, it delivers solid output in a smaller footprint – ideal for constrained UK and EU roofs. 

This module uses N-type i-TOPCon monocrystalline cells in a 56-cell, dual-glass construction. Bifaciality of around 80% ±7% means the rear side can capture additional irradiance from reflective surfaces (light-coloured roofs, ground or ballast), increasing total kWh/kWp versus monofacial glass–backsheet modules. For installers, that extra backside gain helps squeeze more generation out of each project without changing the basic system design. 

Mechanically, the TSM-290NEG9M4C.26 is built for harsh conditions. It measures 1650 × 992 × 30 mm and weighs 21.0 kg, with 2.0 mm heat-strengthened glass on both sides and an anodised aluminium 30 mm frame. The module is rated to withstand 5400 Pa front and 2400 Pa rear static loads and carries Fire Class C certification, giving you confidence on exposed or high-snow sites. An IP68 junction box and Stäubli MC4 Evo2 connectors support long-term weather protection.

Electrically, it is certified for 1500V DC (IEC) systems with a 20 A maximum series fuse rating, giving you flexibility to design longer strings and reduce BOS costs with modern string inverters. Temperature coefficients are favourable for rooftop applications, with Pmax −0.29%/°C, Voc −0.24%/°C and Isc +0.04%/°C, helping maintain output during summer peaks and on dark roof coverings. 

For long-term performance, Trina offers a 5-year product workmanship warranty and a 15-year power warranty, with 2% first-year degradation followed by 0.85% per year, ensuring a strong retained power level over the module’s lifetime. 

In practice, the TSM-290NEG9M4C.26 Honey dual-glass gives installers a robust, bankable bifacial rooftop module that combines compact dimensions, bifacial gain and dual-glass durability – a solid choice for residential and small commercial systems where longevity and dependable yield are key.