Shaping the future of solar energy

VESS Modules – next-generation N-type photovoltaic modules, manufactured in Europe.

Who Are We?

VESS Modules is an innovative manufacturer of high-efficiency N-type photovoltaic modules, part of the Clever Synergy Investment Fund (CSIF) . The company is building a new production facility in Kardzhali, Bulgaria, which will open in 2026 and will be among the most modern facilities in the world.

By 2029, VESS Modules plans a production capacity of 2–3 GW, establishing itself as a European leader in the PV industry. In addition to manufacturing, the company also offers additional services – design, maintenance, repair, and recycling of solar systems – to ensure comprehensive and sustainable solutions for its clients.

Driven by the mission to accelerate the energy transition, we combine innovation, reliability, and responsibility to build a cleaner future.

Solar Solutions for a Greener Future in Europe.

Why Choose VESS Modules?

VESS Modules produces a new generation of photovoltaic modules, created with a vision for the future of sustainable energy. Thanks to its intelligent production and attention to every detail – from color consistency to mechanical strength – VESS is the choice for businesses that look beyond the present and invest in the energy of tomorrow.

Lower Degradation*

Years Warranty

*for 30 years compared to standard modules

Oslar

Oslar is a new generation of TOPCon photovoltaic modules, created with a vision for the future of sustainable energy. It is a preferred choice for industries seeking reliability, performance, and aesthetics in one.

Exceptional Durability

High-Efficiency Cells

High Performance

Competitive Price

Advantages of VESS N-type Modules

Maximum Temperature Resistance

N-type cells operate stably in heat – with a lower temperature coefficient and up to 20% less power loss.

Zero Risk of LID (Light Induced Degradation)

Unlike P-type panels, N-type modules do not experience initial shock after installation. This ensures a stable start and long-term reliability.

High Shading Resistance

The modules offer higher efficiency in partial shade, pollution, snow, or dust. Suitable for urban and industrial conditions.

Fire Safety

Manufactured, designed, and certified according to the latest European standards for fire safety and durability.

Blog

The Global Race for Energy Storage: Europe and US in Search of Smarter Solar Energy

The photovoltaic sector is experiencing unprecedented growth worldwide. In 2024 alone, the EU generated almost half of its electricity from renewable sources, with solar energy surpassing coal for the first time. Meanwhile, the US reached new records in installed photovoltaic capacity, driven by large-scale government policies.

What are the Different Types of Cells in Solar Panels — and why N-type TOPCon is the Future

Solar modules (panels) are the heart of every photovoltaic system, and cell technology determines their efficiency, reliability, and longevity. Today, the market offers various solutions, but several technologies stand out as leading: N-type TOPCon, TOPCon, PERC, Tier 1 manufacturers, as well as innovative flexible solar cells.

Frame and Customization Options

The aluminum frame has a dense oxide layer, which provides high mechanical resistance. This type of frame is suitable for most PV installations in Europe. It should be noted that aluminum is sensitive to salt solutions, acids, and some bases.

Model:

Density:

G/Cm³

Frame Strength:

MPa

100

Service Life:

Years

up to