2022 Solar Panel Technology Milestones: Efficiency Records and New Cell Architectures

⏱️ Reading time: 5 minutes | Updated July 2026

While the U.S. solar market wrestled with tariffs and customs delays in 2022, the technology inside solar modules kept advancing at a rapid pace. Cell manufacturers pushed n-type architectures into mainstream production, research labs shattered tandem efficiency records, and residential module wattages crossed thresholds that would have seemed ambitious just a few years earlier. Here's a look at the technical milestones that defined 2022 — and what they mean for installers specifying equipment today. PES Supply stocks 50,000+ SKUs from 169 authorized brands with delivery in 7–10 business days.

TOPCon Cells Moved From Lab to Mainstream Production

Tunnel Oxide Passivated Contact (TOPCon) cell technology had its breakout year in 2022. JinkoSolar led the way with a string of efficiency records for its n-type monocrystalline TOPCon cells: 25.7% in April, 26.1% in October, and a 23.86% conversion efficiency for a full 182mm TOPCon module in November (PV Tech). These gains — roughly a full percentage point over the course of the year — reflected TOPCon's rapid maturation as manufacturers scaled n-type production lines that had previously been dominated by p-type PERC cells.

NREL's Solar Cell Efficiency Tables likewise recorded a large-area (330 cm²) n-type silicon TOPCon cell from JA Solar reaching 25.6% efficiency, measured by Germany's Institute for Solar Energy Research Hamelin (ISFH) (NREL Solar Cell Efficiency Tables).

Heterojunction (HJT) Technology Set Repeated Records

LONGi Solar was the dominant name in heterojunction (HJT) cell efficiency records throughout 2022, setting new marks in March, June, November, and December. By June 27, 2022, LONGi claimed a 26.5% efficiency record for silicon HJT cells (PV Tech). By November, that climbed to 26.81%, described as a new outright HJT world record confirmed by ISFH (SurgePV efficiency timeline; NREL Solar Cell Efficiency Tables). By December 22, 2022, LONGi announced mass-production efficiencies of 26.56% for gallium-doped p-type HJT cells and 26.09% for indium-free HJT cells on M6 full-size monocrystalline wafers (pv magazine). Company records show LONGi broke PV cell efficiency records seven separate times in 2022 alone, part of a streak of 19 records since 2021 (LONGi).

Data compiled from PV Tech, NREL Solar Cell Efficiency Tables, and ScienceDaily/HZB.

Perovskite Tandem Cells Crossed New Thresholds

2022 was a landmark year for perovskite-silicon tandem research. In summer 2022, École Polytechnique Fédérale de Lausanne (EPFL) reported the first certified tandem cell above the 30% barrier, at 31.3% efficiency (ScienceDaily). By December 19, 2022, researchers at Helmholtz-Zentrum Berlin (HZB) pushed the record further to 32.5%, officially confirmed by the European Solar Test Installation (ESTI) and added to NREL's Best Research-Cell Efficiency Chart (ScienceDaily).

NREL refreshed its interactive Best Research-Cell Efficiency Chart in November 2022, highlighting the sharp recent gains in emerging technologies like perovskites relative to more mature crystalline silicon platforms (pv magazine). Separately, single-junction perovskite cell efficiency reached roughly 25.7% for the year — up from an initial 14% when NREL first began tracking the technology in 2011 — underscoring perovskites' unusually fast rate of improvement compared to other PV technologies (G2V Optics/NREL data). While perovskite tandems remained a research-stage technology in 2022 rather than a commercial product, the rapid pace of records set the stage for the tandem modules beginning to reach limited commercial availability in subsequent years.

400W+ Modules Became the Residential Standard

On the commercial product side, 2022 was the year 400-watt-plus modules moved from a premium option to the mainstream choice for residential and light commercial installations. Rising cell efficiencies from both TOPCon and PERC platforms, combined with larger wafer formats (M10/G12), allowed manufacturers to push standard 60- and 66-cell residential module wattages well past the 400W mark while keeping panel dimensions installer-friendly.

Bifacial construction — once reserved for utility-scale ground-mount projects — also continued its march toward standardization across residential and commercial product lines in 2022, aided by the retained bifacial exemption from Section 201 tariffs that made bifacial panels more cost-competitive for U.S. buyers (CNBC).

What This Meant for Installers Specifying Equipment

• Higher-wattage modules reduced the panel count needed per project, cutting racking, labor, and balance-of-system costs per installed watt.
• TOPCon's efficiency gains throughout the year made n-type modules increasingly price-competitive with legacy PERC options, prompting many installers to reevaluate standard product lines.
• Bifacial modules' continued tariff exemption made them an increasingly attractive default for ground-mount and certain rooftop applications.
• Facility managers planning multi-year rooftop or ground-mount projects needed to account for a fast-moving efficiency curve when specifying long-lead-time equipment.

With cell technology advancing quarter over quarter throughout 2022, having access to multiple manufacturers' current-generation products mattered more than ever. PES Supply's catalog of 50,000+ SKUs spans 169 authorized brands, giving installers a way to compare TOPCon, HJT, and PERC module options side by side. Browse our solar panels collection and racking systems sized for today's higher-wattage modules. Standard delivery is 7-10 business days.

Looking Ahead

The technology gains of 2022 — TOPCon's rapid scale-up, HJT's repeated efficiency records, and perovskite tandems crossing the 32% mark in the lab — set the stage for the next generation of commercial products that would reach U.S. rooftops in the years that followed. For installers, staying current on which cell architecture a given manufacturer shipped in any given quarter became an increasingly important part of the specification process.

Sources: NREL Solar Cell Efficiency Tables, PV Tech, pv magazine, Helmholtz-Zentrum Berlin / ScienceDaily, manufacturer press releases from JinkoSolar and LONGi Solar.

Shop This Article

Ready to specify equipment for your next project? PES Supply stocks 50,000+ SKUs from 169 authorized brands with delivery in 7–10 business days. Here are our top picks based on the topics discussed above:

• JA Solar 405W DeepBlue 3.0 (JAM54S31-405/MR) — 400W-class residential, all-black aesthetic
• Canadian Solar 445W TOPCon N-Type (CS6.2-48TM-445) — 22.4% efficiency, N-type TOPCon
• REC Alpha Pure-R 450W N-Type HJT (REC450AAPU) — 22.6% efficiency, −0.26%/°C temp coefficient
• Canadian Solar 620W TOPCon Bifacial (CS6.2-66TB-620) — 80% bifaciality, commercial ground-mount
• Silfab 530W N-Type Bifacial (SIL530XM-DCA2) — Domestic Content compliant, commercial

Browse our complete selection: Solar Panels | TOPCon N-Type | JA Solar

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