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Kingdom vs AKCOME - solar panel manufacturer comparison

Kingdom
China Founded 2010
Read the Kingdom review
VS
AKCOME
China Founded 2003
Read the AKCOME review
At a glance

Kingdom leads on peak efficiency at 22.80%. AKCOME leans bifacial (100% of lineup).

Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.

Panel models
3 3
Highest power
590 Wp 700 Wp
Best efficiency
22.8% 22.5%
Average efficiency
22.5% 21.6%
Bifacial share
0% 100%
Average warranty
30 yrs 30 yrs
01

The two companies

Company facts, not datasheet figures
Kingdom

Kingdom Solar (also known as KDM Kingdom Solar) is a Chinese solar module manufacturer based in Hefei, Anhui Province. The company produces monocrystalline solar panels for residential and commercial applications.

Founded
2010
Headquarters
Hefei, China
Annual capacity
1 GW/year
Employees
100
AKCOME
Founded
2003
Headquarters
Suzhou, China
02

Catalogue against catalogue

Averages over every model in the database
Metric Kingdom AKCOME
Catalog & Power
Panel Models 3 3
Max Power 590 W 700 W+110 W
Avg Power 533 W 672 W+138 W
Efficiency
Max Efficiency 22.80%+0.26 pp 22.54%
Avg Efficiency 22.46%+0.83 pp 21.63%
Reliability & Warranty
Avg Temp Coefficient -0.290%/°C -0.240%/°C+0.050
Bifacial Share 0 (0%) 3 (100%)+100 pp
Avg Warranty 30.0 yrs 30.0 yrs

An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.

03

What each of them builds

Cell technology across the market
Efficiency spread
Share of each catalogue in every efficiency band
Power spread
Share of each catalogue in every power band

AKCOME offers more 600W+ panels (100% of lineup)

Kingdom cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>N-type</strong> (100%)

AKCOME cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>HJT</strong> (100%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

Both AKCOME and Kingdom Solar are China-based manufacturers that sit outside the BloombergNEF Tier 1 bankability list, meaning neither has demonstrated the volume of project financing required to qualify as institutionally bankable. AKCOME was founded in 2003 and, at its peak, operated roughly 6 GW of heterojunction (HJT) cell and module capacity, with ambitions to reach 8.2 GW; however, its Zhejiang subsidiary filed for bankruptcy in 2024 due to an inability to service debt, a serious red flag for long-term warranty support. Kingdom Solar (Zhejiang Kingdom Solar Energy Technic Co.) was established in 2010 in Linhai City, Zhejiang, reports a production capacity of 1 GW, and employs approximately 100 people - a much smaller outfit with no stock exchange listing, but one that appears to remain operational. On institutional footprint, neither brand offers the financial reassurance of a Tier 1 manufacturer, and AKCOME's current insolvency situation makes it the riskier of the two.

The two lineups are aimed at very different segments. AKCOME's sampled portfolio is built entirely on HJT technology with 100% bifacial construction, averaging 671 Wp per panel and topping out at 700 Wp, with an average efficiency of 21.6% and a peak of 22.54%. The strong temperature coefficient of -0.24% per degree Celsius is a genuine advantage in warm climates, and the high wattage per panel suits ground-mounted utility or large commercial installations where minimizing racking and wiring costs matters. Kingdom Solar's reviewed lineup consists of a single N-type monofacial panel rated at 440 Wp with an efficiency of 22.5% - competitive on a per-cell basis, but with a weaker temperature coefficient of -0.29% per degree Celsius and no bifacial gain. That profile fits premium residential rooftops or small commercial arrays where panel count is constrained and module-level efficiency matters more than raw wattage. Both manufacturers offer a 30-year product warranty on paper.

For a typical buyer in 2025, Kingdom Solar is the more defensible default despite its smaller scale, simply because the company appears to be a going concern, which is the minimum condition for a warranty to carry any practical weight. AKCOME's HJT technology and high per-panel power output are genuinely compelling on spec, but purchasing from a manufacturer that has entered insolvency proceedings introduces serious counterparty risk - no amount of efficiency advantage compensates for a warranty that may be unenforceable. Buyers with strong project-finance requirements should look past both brands toward Tier 1 alternatives.

Generated by Claude Sonnet · 2026-05-11

06

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Something missing from a catalogue? Both lists are built from the datasheets in the database. If a model is absent, it has not been ingested yet.

Shop prices: See 3 Kingdom offers · See 2 AKCOME offers

Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.