Intersolar 2021: photovoltaic panels reach and exceed 700 WC

Batirama.com 06 / 10 / 20210

600 WC has become normal for PV panels. Four industrialists present to Intersolar panels exceeding 700 WC and announce 800 WC for next year

Its 96-cell monocrystalline silicon panel BSM500M-96 reached 500 WC, with a 19.51% efficiency and a power sensitivity at -0.410% / K. it used 156 x 156 mm cells.

It's so over. In Hall A6, where the manufacturers of PV panels are grouped, all display panels in excess of 500 WC.

Ja Solar reaches 580 WC with 72 cells and rises to 620 WC with 78 monocrystalline heterojunction cells mounted in half cells. ©PP

Recom Technologies is the new name of Sillia, Lannion's Breton, purchased in 2017. ©PP

600 WC is the new normal

Let's start with the French Recom Technologies. If you Don't know her name, it's because it's Sillia, based in Lannion and bought by the Italians Recom in 2017. The group, based in 8 countries, is now based in France.

In 2017, the Lannion production line was invested €10 million to produce single-crystal panels from M2 cells. A further modernisation is planned in the first half of 2022 to manufacture modules according to the new CRE 5 requirements.

All PV panel exhibitors referred to the CRE requirements, the 4 in progress and the 5 in preparation. This is a complex subject to which an entire article will be devoted. But, broadly speaking, it is a question of reducing the carbon footprint of PV panels by incorporating as many European components as possible.

Astronergy offers Astro 6 twins panels up to 660 WC in half cells. ©PP

Recom exhibits to Intersolar the modules of its Puma range that offer powers of 630, 635, 640, 645, 650 and 650 WC. They use shingled technology that eliminates welded metal ribbons and increases the active surface. ©PP

This allows them to achieve module yields of 20.5% to 21.3%, with a yield loss guarantee in the first year of up to 2%, then a loss of less than 0.45% / year between years 2 to 30 and therefore a yield of ≥ 84.95% in the 30th year.

As with almost all new modules, the maximum voltage of the installed system reaches 1500 V. at the last Intersolar, it was only 1000 V.

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The rem Lion range offers 5 monocrystalline bifacial modules with a heterojunction with unit powers from 620 to 640 W. rem expects to reach unit powers of 700 WC by next year.

CGL uses PERC single crystal 210 x 210 mm cells, mounted in half cells, for its new panels with nominal power of more than 600 WC. ©PP

30-year power guarantee

More than fifteen exhibitors offer PV modules with nominal powers of more than 600 WC at Intersolar 2021. The VSUN605-120BMH-DG module of VSUN, for example, reaches 605 WC.

While GCL pushes to 670 WC with its module GCL-M12 / 66GDF and Astronergy-now owned by the Chinese group CHINT-is in the power range from 645 to 660 WC.

While the Titan RSM120-8-580BMDG-600BMDG range of rise solar technology reaches 600 WC today and r 700 WC by the end of November. ©PP

These very powerful modules share common characteristics. These are bifacial modules, designed to produce with both sides. The lower surface being illuminated by the light returned from the ground.

The bifacial module becomes the standard for ground installations. ©PP

Even small brands, such as the Chinese Jolywood display high-power modules, exceeding 600 WC. Jolywood's Niwa Max series reaches 700 toilets. ©PP

Bifacial modules

Contrary to what is assumed, bifacial modules are not reserved for ground installations and solar farms. The Fraunhofer ISE, present at Intersolar, points out that a white or light flat or sloping roof is ideal for installing bifacial modules on inclined frames.

The peak powers indicated, however, relate only to the irradiation of the upper surface. Astronergy indicates, for example, for its ASTRO 6 twins module a rated power of 660Wc on the upper side, plus a power of 462 WC on the lower side, but does not specify the radiation rate for the lower surface.

Panel efficiency greater than 21%

All new panels have nominal yields in excess of 21%. Some models reach and exceed 22%. In 2019, the best panels at Intersolar were just over 20% yield.

Their sensitivity to temperature rise has also decreased. The modules have a power reduction of -0.4 to -0.2 / °C above their rated operating temperature.

©PP

Source: batirama.com / Pascal Poggi