OEM/ODM Solar Water Heater Manufacturer & Supplier

Custom High-Performance Thermal Solutions for Global Commercial, Industrial, and Residential Projects. Backed by SES Solar Infrastructure.

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Explore our core industrial products matching clean thermal solar applications with electrical microgrid compatibility.

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Welcome to SES Solar

SES Solar, a professional solar integrated manufacturer and solution provider in China, is a high-tech enterprise dedicated to R&D of solar modules, on/off/hybrid solar systems, lithium batteries, and ESS. With overseas branches and a professional team in support, SES Solar not only manufactures solar products but also designs, invests in, and installs solar systems across the Chinese mainland.

We have invested in 100MW of solar systems, with our solar cell factory capacity exceeding 35GW and our solar panel factory capacity surpassing 1GW. In 2022, SES Solar invested in their ESS factory, further expanding our capabilities and offerings in the solar industry.

Welcome to SES Solar Facility
35GW+
Solar Cell Capacity
1GW+
Solar Panel Capacity
100MW
EPC Investments
16+ Yrs
Marketing & EPC Exp.

Industrial Whitepaper: Decarbonizing Thermal Energy via Advanced Solar Water Heating

Evaluating solar water heating under the Levelized Cost of Heat (LCOH) framework for heavy commercial and industrial procurement.

The Thermodynamics of Commercial Solar Thermal Energy Conversion

As global carbon regulations tighten, the industrial sector faces an urgent challenge: decarbonizing process heat, which accounts for over 70% of industrial energy demand. While photovoltaic (PV) systems dominate power discussions, solar thermal collectors capture solar energy with significantly higher thermodynamic efficiency (often exceeding 60-80% compared to 20-22% for premium PV modules). A robust, pressurized industrial solar water heating system represents the most direct route to reducing Scope 1 emissions in hotel chains, hospitals, agricultural processing, and manufacturing operations.

SES Solar leverages its extensive material science and semiconductor expertise to engineer thermal collectors that minimize thermal dispersion. Whether using vacuum tubes with selective absorption layers (such as Al-N/Al or SS-Al-Nx/Cu) or flat-plate collectors with tempered glass and ultrasonic copper-aluminum welding, our configurations are engineered for maximum LCOH performance. By combining high-density polyurethane (PU) foaming (up to 55mm to 60mm thickness with 40kg/m³ density) with food-grade SUS304-2B or SUS316L inner tanks, we ensure thermal energy is conserved over multi-day periods, even in high-latitude regions prone to freezing.

Key Technical Parameters of SES Solar OEM Collector Designs:

  • Absorptance Rate (α): ≥ 95% (Al-N/Al or SS-Al-Nx/Cu sputtering coatings)
  • Emittance Rate (ε): ≤ 5% at 80°C working temperatures
  • Working Pressure Tolerance: Up to 0.9 MPa (9 Bar) pressurized loops
  • Anti-Freezing Performance: Rated down to -35°C using propylene glycol closed-loop designs

Global Enterprise Procurement: Decisive Criteria for Solar Thermal Systems

B2B buyers, EPC companies, and utility developers require more than off-the-shelf equipment. They need flexible OEM/ODM partnerships capable of adapting components to regional architectures and regulatory standards. For instance, flat-plate collectors are preferred in regions with high wind loads or heavy snow accumulation due to their streamlined profiles and structural resilience. Conversely, in low-solar-radiation or sub-zero climates, evacuated tube solar collectors with heat pipes are preferred, as their vacuum insulation minimizes convective heat loss.

Our ODM workflows facilitate custom piping designs, manifold placement, and integrated backup options (such as dry-contact interfaces for auxiliary heat pumps or boilers). As a vertically integrated supplier, SES Solar bridges the gap between solar thermal collection and intelligent PV-ESS systems. This integration enables the optimization of both the thermal and electrical components of modern net-zero facility grids.

Comprehensive OEM/ODM Engineering Workflow

How we tailor solar thermal and PV systems from conceptual drawings to site-specific field integration.

1. Fluid Dynamics & Structural Design

We customize collector shapes, absorber materials, and internal piping layouts to align with local wind, snow, and water-chemistry specifications.

2. Automated Precision Fabrication

Utilizing CNC sheet bending, high-frequency ultrasonic welding, and high-pressure polyurethane insulation injection to secure thermal efficiency.

3. Quality Validation & Pressure Testing

Every storage tank and solar collector manifold undergoes high-pressure leak testing (up to 1.5x working pressure) for 24-48 hours prior to dispatch.

Supply Chain Excellence & Compliance Standards

Translating Chinese industrial capacity into high-quality, compliant solar thermal products for international markets.

China Supply Chain Integration: The Cost and Quality Advantage

As solar cell capacities exceed 35GW and solar panel output surpasses 1GW, SES Solar leverages the structural advantages of the Chinese industrial ecosystem. This includes raw material sourcing (such as high-grade borosilicate 3.3 glass tubing and food-grade stainless steel) and direct shipping access from major eastern ports. Our deep supply chain integration reduces manufacturing lead times, allowing us to manage large production runs and fast-track shipping container consolidation.

Moreover, the proximity to specialized tooling industries enables fast-turnaround prototyping. Whether you need customized mounting frames for pitched roofs, flat roofs, or ground structures, our structural design team can produce CAD/BIM models and physical prototypes within weeks, accelerating your project's time-to-market.

Global Compliance, Certifications, and Testing Protocols

Entering international markets requires adherence to local certifications. SES Solar products conform to major international testing standards, ensuring smooth customs clearance and utility-connection approvals:

  • CE Marking: Verification of safety and electromagnetic compatibility across the EEA.
  • ISO 9001:2015: Ensuring rigorous quality management systems are applied throughout the design, production, and testing phases.
  • Solar Keymark & SRCC Compliance: Direct integration alignment with European (EN 12975) and American (OG-100/300) standards for efficiency and reliability.
  • AS/NZS 2712 Compatibility: Engineering configurations designed to withstand high UV indexes and marine environments in the Oceania region.

Integrated Solar Solutions

SES Solar, a professional solar integrated solution provider in China, is a high-tech enterprise dedicated to R&D of solar modules, on/off/hybrid solar systems, lithium batteries, and ESS. With overseas branches and a professional team in support, SES Solar not only manufactures solar products but also designs, invests in, and installs solar systems across the Chinese mainland. We have invested in 100MW of solar systems.

Easy to Install

Easy to Install

The industry's most comprehensive repair, maintenance and monitoring program.

Easy to Install

Reliable Performance

The industry's most comprehensive repair, maintenance and monitoring program.

Easy to Install

Comprehensive Program

The industry's most comprehensive repair, maintenance and monitoring program.

Proven New Energy Installation Cases

Explore real-world EPC applications engineered and integrated by SES Solar teams.

10KW hybrid solar system
New Energy Case for Residential Solar System
10KW hybrid solar system installation
5KW on-grid solar system
New Energy Case for Residential Solar System
5KW on-grid solar system installation
2KW off-grid solar system
New Energy Case for Residential Solar System
2KW off-grid solar system installation
5MW solar system
New Energy Case
5MW large scale utility solar system

Create Maximum Value for Customers

We provide a comprehensive suite of solar PV solutions that can optimize a wide range of project applications.

  • Solar cell & solar panel & ESS factory
  • Professional technical team
  • 16 years Solar marketing & EPC experience
  • Customization requirements for solar panel, solar system & ESS
  • Overseas technical support
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Value creation graphics

Localized Application Scenarios

Analyzing thermal profiles, temperature configurations, and auxiliary integrations across standard use cases.

Hospitality & Health Facilities

Hotels and hospitals require continuous hot water delivery at consistent temperatures (55°C to 60°C) to prevent bacterial growth while managing operating costs. Our large-scale centralized solar thermal installations feature intelligent control units that monitor thermal stratification in storage tanks and activate auxiliary heat pumps during peak-demand periods.

Industrial Process Heat (IPH)

Food processing plants, chemical facilities, and industrial laundries require high-temperature preheating (up to 85°C). SES Solar provides high-pressure evacuated tube collectors and flat-plate collector arrays with specialized high-temperature heat transfer fluids. These systems integrate with pre-existing steam generation boilers to reduce natural gas consumption.

Off-Grid Agricultural Integration

For greenhouses, aquaculture, and remote farming communities, combining solar water heating with solar PV and energy storage (ESS) systems ensures operational resilience. Our localized configurations offer hybrid support, powering irrigation pumps and heating soil or washing facilities without relying on unstable power grids.

Technical Q&A: Industrial Solar Water Heating Systems

In-depth technical answers addressing sizing, pressure management, hybrid configurations, and return on investment (ROI).

Q1: What are the main differences between evacuated tube and flat plate collectors in OEM designs?
Evacuated tube collectors utilize concentric borosilicate glass tubes with a vacuum layer between them to minimize conductive and convective heat losses. This design makes them highly efficient in cold climates and low-irradiation environments. Flat plate collectors, on the other hand, feature a structural copper/aluminum sheet absorber inside a weather-sealed, insulated metal enclosure. They offer high efficiency in high-radiation regions, durability under physical impact, and a lower profile for high-wind installations.
Q2: How does SES Solar ensure corrosion resistance in industrial storage tanks?
We use food-grade SUS304-2B or SUS316L stainless steel for our pressurized inner tanks. To prevent galvanic corrosion at welding joints, we apply automated argon arc welding. We also integrate sacrificial magnesium anodes to protect against aggressive chloride ions in local municipal water supplies.
Q3: Can a solar water heater be integrated with a heat pump?
Yes. Commercial solar thermal arrays can be integrated with air-source or water-source heat pumps. The solar collectors act as the primary heat source during sunny hours. If the temperature in the storage tank falls below a set point (e.g., 50°C), the control system routes the fluid through the heat pump, optimizing system efficiency and COP (Coefficient of Performance).
Q4: How do pressurized solar thermal systems prevent boiling or stagnation?
Stagnation occurs when the solar collector absorbs energy without fluid flow. To prevent this, our systems are designed with high-temperature rated expansion vessels, safety relief valves, and intelligent controllers that execute nocturnally active cooling cycles to dissipate excess heat back through the collector when necessary.
Q5: What is the typical ROI period for industrial solar water heating systems?
Depending on local fuel replacement costs (such as natural gas or electricity tariffs) and solar irradiance levels, typical payback periods range from 3 to 6 years. With an operational lifetime exceeding 15-20 years, these systems deliver long-term operational savings and help insulate businesses against future energy price volatility.
Q6: How does the thickness of polyurethane insulation affect thermal losses?
Our systems utilize high-pressure, CFC-free polyurethane foaming with a thickness of 50mm to 60mm. The high density (40kg/m³) ensures that heat loss is minimized to less than 2°C per 24-hour period, preserving stored hot water for overnight use.
Q7: Can SES Solar customize bracket systems for specific wind and seismic loads?
Yes, our engineering department designs structural frames using aluminum alloy (6005-T5) or hot-dip galvanized steel, capable of withstanding wind loads of up to 55 m/s and high seismic activity zones. We provide full structural calculation reports for municipal permitting requirements.

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Ensure performance across your entire solar array with certified balance-of-system (BOS) components.

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