# DMEGC Solar launches steel-frame PV modules with S-shaped section, bifaciality up to 85%

- Published: 2026-11-10 15:21 UTC
- Section: Power & Energy › Energy
- Tags: DMEGC Solar, steel-frame solar modules, bifaciality factor, S-shaped frame, thermal expansion of steel and glass, Zn-Al-Mg coated steel, rear-side shading, solar module snow load
- URL: https://realtech.media/news/rt-5c8b8de245383aabd63ac5ad_dmegc_solar_launches/

**The company says the S-shaped steel frame cuts rear-side shading by 76% and brings the frame's thermal expansion closer to that of glass than aluminum does.**

![DMEGC Solar launches steel-frame PV modules with S-shaped section, bifaciality up to 85%](https://realtech.media/media/2026/11/4493b64acd9dab8e.webp)
*adnkronos.com*

DMEGC Solar, based in Jinhua, China, has launched a new series of photovoltaic modules with steel frames in place of the traditional aluminum ones. The announcement is dated 10 November 2026 and was published on adnkronos.com [1]. The company presents the series as a change in frame engineering aimed at durability and at energy capture on the rear side of the module [1].

## Steel instead of aluminum

According to the company's technical documentation, the steel grade used has a tensile strength nearly double that of standard aluminum alloys [1]. When properly mounted, the modules withstand a snow load of up to 6000 Pa and a wind load of up to 5000 Pa [1].

The company also points to thermal expansion. The coefficient of thermal expansion is 12 (10⁻⁶ m/k) for steel, 6.9 for glass and 23 for aluminum [1]. DMEGC says this match means steel-framed modules experience far less environmental stress over their lifetime and a lower risk of micro-cracks than aluminum-framed modules [1].

To address concerns about steel corrosion, the company uses Zn-Al-Mg coated steel (ZAM). According to the announcement, the modules have passed independent tests for salt mist resistance and ammonia resistance [1].

## S-shaped section and bifaciality

The new frame has an "S-shaped" cross-section. Traditional frames cast shadows on the rear side of the module, and the company says its section reduces vertical shading on the back by 76% [1]. This increases the unshaded rear area by 3.6% and, theoretically, raises the bifaciality factor by approximately 2.8% [1].

DMEGC states that, combined with new cell technologies and an anti-reflective coating (ARC) on the back glass, the modules can reach a bifaciality factor of up to 85% [1].

According to the company's yield simulations, a bifaciality factor of 85% corresponds to an annual power generation of 2,078 kWh/kWp/year [1]. This is an additional 0.6% gain in power generation revenue compared with conventional modules [1]. The figures come from the manufacturer's simulations and technical documentation.

## Sources

1. [adnkronos.com](https://www.adnkronos.com/immediapress/pr-newswire/dmegc-solar-launches-steel-frame-modules-with-new-design-promising-better-reliability-and-higher-bifaciality_7uVZhrYODtlQ0CEtmlNjyg)

---

Source: RealTech, realtech.media — https://realtech.media/news/rt-5c8b8de245383aabd63ac5ad_dmegc_solar_launches/