Key Features

High‑Efficiency N‑Type TOPCon Technology

Adopts advanced N‑type TOPCon (Tunnel Oxide Passivated Contact) cell technology, achieving a module conversion efficiency of 22.58%. Compared with conventional P‑type modules, it offers lower LID (Light‑Induced Degradation) and LeTID (Light‑ and Elevated‑Temperature‑Induced Degradation).

Bifacial Dual‑Glass Design

Features transparent glass on both the front and back. The rear side captures reflected and diffuse light from the ground or surroundings. With a bifacial factor of 80±5%, it can significantly boost total energy yield and reduce the levelized cost of energy (LCOE).

Excellent Reliability & Durability

Anti‑PID performance through optimised processes.

High mechanical load capacity: withstands 5400 Pa snow load (front) and 2400 Pa wind load (back).

IP68‑rated junction box – the highest dust‑ and water‑proof rating – ensuring long‑term outdoor reliability.

SMBB (Super‑Multi‑Busbar) Technology

Employs a greater number of finer busbars to improve current collection, enhance light utilisation, and boost both power output and module reliability.

Superior Warranty

Offers 12 years product material and workmanship warranty, and a 30‑year linear power output warranty. First‑year power degradation ≤ 1%, followed by annual degradation ≤ 0.40% per year.

Better Low‑Light Performance & Temperature Coefficient

N‑type cells perform well under low‑light conditions. The power temperature coefficient is ‑0.29%/°C, meaning less power loss at high operating temperatures compared to many conventional modules.

Primary Applications

Thanks to its high output, efficiency, and bifacial gain, this module is suitable for a wide range of PV projects:

Utility‑scale ground‑mount solar farms – Maximises land use and energy yield.

Commercial & industrial (C&I) rooftop systems – Enables higher installed capacity within limited roof space.

Agrivoltaic and floating/pv‑fishery projects – The dual‑glass structure withstands high‑humidity environments, making it ideal for agricultural or fishery complementary installations.

Solar tracking systems – Compatible with single‑axis trackers, further unlocking the bifacial potential.

Frequently Asked Questions (FAQ)

1. How does the JKM610N‑66HL4M‑BDV differ from other models in the same series (e.g., 615W, 620W)?

The main difference is the power bin. All models in the JKM600N‑625N‑66HL4M‑BDV series share identical dimensions, weight, and technology. The JKM610N‑66HL4M‑BDV has a rated STC maximum power of 610W, while higher‑wattage bins offer slightly more power within the same physical and electrical framework.

2. How is the rear‑side power gain achieved with a bifacial module?

The module’s back glass is transparent, allowing it to capture reflected and diffuse sunlight from the ground, surrounding structures, or water. With a bifacial factor of 80±5%, the rear side can generate up to ~80% of the front‑side power under ideal conditions. Actual overall gain typically ranges from 5% to 25%, depending on installation height, ground albedo (e.g., white surfaces, snow), and other site‑specific factors.

3. How does the temperature coefficient affect real‑world performance?

The power temperature coefficient is ‑0.29%/°C, meaning that for every 1°C increase in cell temperature above 25°C, the module’s output power decreases by 0.29% relative. This is better than many conventional P‑type modules (which are typically ‑0.35%/°C to ‑0.40%/°C), resulting in less energy loss in hot climates and better overall annual performance.

4. What are the warranty terms for this module?

JinkoSolar provides:

12‑year product and workmanship warranty.

30‑year linear power output warranty:

≤ 1% degradation in the first year.

≤ 0.40% annual degradation from year 2 to year 30.

By the end of year 30, the module is guaranteed to retain no less than 87.4% of its initial rated power.