EFPC Flat Plate Solar Collector

Against the global energy transition, solar energy has become a core solution to address climate change and energy security. The EFPC High-Efficiency Integrated Large Flat-Plate Collector emerges as a groundbreaking product, redefining solar heat collection efficiency and practicality. With a large heat-collecting area, high integration, and advanced energy conversion technology, it sets a new benchmark in the solar heating field.

Versatile Scenarios, All-Round Adaptability

The EFPC Collector’s excellent adaptability enables its application across multiple fields:

• Urban Central Heating: Provides clean, stable heat for residential communities, cutting carbon emissions to support green city development.

• Building Heating: Fits commercial, public, and residential buildings, supporting both new green constructions and old building energy-saving renovations.

• Commercial Hot Water: Meets large-scale hot water needs of hotels, hospitals, and schools, reducing operating costs.

• Industrial Heat Supply: Replaces fossil fuels in food processing, textile dyeing, etc., promoting industrial green upgrading.

• Agriculture & Animal Husbandry: Maintains suitable temperatures for greenhouses and breeding farms, boosting output.

• Agricultural Drying: Offers efficient, hygienic drying for grains, medicinal materials, and fruits, increasing product added value.

Outstanding Advantages, Reshaping the Industry

(I) Efficient Temperature Rise

At an operating temperature of 95℃, the EFPC Collector’s heat collection efficiency is 60% higher than ordinary flat-plate models. Under the same sunlight conditions, it captures more solar energy, reducing the number of required collectors and lowering space and installation costs. For users, this translates to reduced energy bills and faster investment returns.

(II) Super-Large Unit Stability

With a single-unit heat collection area of 11.4-15.0 square meters, the EFPC Collector significantly reduces system connection points, minimizing leakage risks. Its optimized design pressure allows it to withstand harsh conditions—such as high temperatures, strong winds, and extreme cold—ensuring long-term stable operation. The large unit design also simplifies installation, saving time and labor.

(III) Integrated & Intelligent Design

Adopting an integrated internal structure and standardized external system design, the EFPC Collector achieves "economy, safety, intelligence, and convenience". Economically, it reduces components and connections, lowering material and installation costs. In terms of safety, it minimizes system failures and leakage risks. Intelligently, it is compatible with smart control systems, enabling remote monitoring and operation optimization based on real-time weather and heat demand.

(IV) Significant Cost Cuts

Compared with traditional heat collection systems of the same area, the EFPC Collector offers remarkable cost advantages: it reduces floor space by 62% (ideal for space-limited areas like urban rooftops), saves pipeline length by 64% (lowering material costs and heat loss), cuts installation time by 80% (shortening project cycles and labor costs), and improves heat collection efficiency by 60% (enhancing ROI).

Core Technologies, Building a Legend

(I) Selective Absorption Coating

SOLETKS, the developer of the EFPC Collector, is the world’s only manufacturer producing both "blue film" and "black film"—core materials for solar thermal applications. The collector’s selective absorption coating, optimized through years of R&D, maximizes solar radiation absorption while minimizing heat loss. Tested by a national-level laboratory in China, its thermal efficiency reaches an industry-leading 0.813, ensuring excellent performance in various environments.

(II) Finite Element-Optimized Flow Channel

Using advanced finite element analysis, the EFPC Collector’s flow channel design is optimized via extensive simulations and experiments. This ensures uniform internal heat distribution and high heat transfer efficiency. Even under harsh conditions with large temperature differences, the collector maintains stable heat output—avoiding the performance degradation of traditional models. This innovative design has won the Shandong Provincial Science and Technology Progress Award.

(III) Innovative Heat Insulation Chamber

The EFPC Collector applies innovative "heat insulation chamber" technology. Through integrated design, its thermal insulation performance is fully optimized, resulting in a heat loss coefficient of only 2.2—far below the industry average. This technology enables efficient, stable operation in cold northern winters and continental climate areas with large day-night temperature differences, greatly expanding the product’s applicable regions.

 Product Parameter

Join Hands with EFPC for a Green Future

With exceptional performance, versatile scenarios, and groundbreaking technology, the EFPC Collector leads the solar thermal utilization field. It delivers higher efficiency, lower operating costs, and reliable heat supply for enterprises (seeking cost reduction), public institutions (committed to sustainability), and households (pursuing comfort). Choosing EFPC means embracing a green, low-carbon energy future.

Why Choose SOLETKS?

(I) Core Materials & Tech Leadership

SOLETKS holds exclusive global "film technology" . Its core film uses 0.4mm aluminum as the substrate, with a 150-nanoscale seven-layer structure—achieving over 95% solar absorption and less than 5% thermal emission, which is key to the EFPC Collector’s 0.813 efficiency. Covering the full technology chain, it has built a "technical moat" with 117 patents. The EFPC Collector, certified by national laboratories, works stably at -30℃ and has won the Shandong Provincial Science and Technology Progress Award.

(II) Full Industry Chain Layout

SOLETKS’ unique "five-dimensional industry chain system" solves traditional enterprise pain points: upstream (Jinnai’er New Materials) controls core material production; midstream (Feitian New Energy for components, SOLETKS Technology for integration) ensures quality; downstream (Tibet SOLETKS for construction, Shenggao Thermal Energy for operation) forms a "R&D-Production-Construction-Operation" closed loop. This layout reduces floor space by 62%, installation time by 80%, and leakage risk by over 90%.

(III) Market & Production Strength

SOLETKS has a world-leading intelligent production line—rolling out one collector every 55 seconds. In 2024, EFPC collectors covered 1.18 million square meters of heating area, with annual output ranking second globally. Its products are exported to over 40 countries (CE-certified, popular in Germany and Israel) and hold 60% of China’s black film market, adapting to 12 industry scenarios.

(IV) Innovation Ecosystem

Collaborating with 19 institutions (including the Chinese Academy of Sciences and Tsinghua University), SOLETKS has 6 R&D centers and 1 key laboratory. 16% of its employees are researchers (half with over 20 years of experience). This ecosystem drives continuous breakthroughs: from 60% efficiency growth (ordinary to EFPC collectors) to evolving into a "thermal-electric digital twin + cross-seasonal energy storage" system—turning solar energy from an "auxiliary" to a "primary" energy source.