Solar Greenhouse Cultivation Ecosystem: Green Tech for Winter Growing Challenges

In northern China’s harsh winters, when outdoor temperatures drop below -10℃, most crops stop growing or die from cold—long a key barrier to winter agriculture. Now, a solar greenhouse cultivation ecosystem, integrating multi-energy sources and smart control tech, breaks this limit: even at -12℃ outdoors, it keeps greenhouse temperatures stable at a suitable 16℃. Below is its core design and advantages, plus insights from SOLETKS Group.

Core Architecture: Multi-Energy "Temperature Safety Net"

The system’s core is a solar-based, multi-energy complementary heating setup. Its "energy heart" is the EFPC large flat-plate collector—using high-efficiency heat-absorbing materials and special structures, it captures and stores solar energy efficiently, with strong low-temperature resistance (even works in weak winter sunlight).

To handle extreme weather, it adopts a "solar +" multi-energy model: auxiliary heat sources (air-source heat pumps, natural gas boilers, or electric boilers) are chosen based on local resources (e.g., natural gas for resource-rich rural areas, electric boilers for areas with cheap electricity). This ensures stable heating while cutting energy use and costs.

SOLETKS Group underpins this architecture: with 7 subsidiaries, 6 production bases, and 7.0GW annual output of flat-plate clean thermal equipment (ranking 2nd globally), it’s the only firm capable of making both blue-film and black-film heat-absorbing layers. Its self-developed EFPC collector boasts large heat-collecting area, high integration, and long lifespan.

Four Core Advantages

1. Diverse Designs for Different Needs

Heat dissipation: Hot water (via underground pipes, ideal for root-sensitive crops needing stable soil temperature) or hot air (via fans, fast-heating for short-cycle leafy veggies).

Modular heat collection: Farmers adjust collector numbers by greenhouse size, avoiding waste and lowering initial costs.

SOLETKS supports this with a wide product range—including regional distributed heating collectors and ATPC hot air collectors (the world’s first integrated flat-plate hot air collector, CE-certified).

2. Intelligent, Unmanned Operation

A temperature difference circulation system automatically starts/stops the circulation pump when the collector-greenhouse temperature gap hits 5-8℃ (saving energy).

Sensors and smart modules monitor air/soil temperature, switching to auxiliary heat sources (e.g., natural gas boilers) on cloudy nights to keep temperatures stable.

SOLETKS enhances this with its smart energy system: integrating thermal-electrical digital twins and cross-seasonal energy storage, it optimizes energy allocation—prioritizing solar when available, and switching to auxiliaries seamlessly.

3. Low-Cost Advantage

Solar energy accounts for 60%-80% of total heating (free and clean), with auxiliaries only used in extremes—costs are far lower than coal-fired or pure electric greenhouses. The EFPC collector also cuts costs: 62% less floor space, 64% shorter pipelines, 80% faster installation, and 60% higher efficiency.

4. Industrial-Grade Reliability

An industrial PLC controller (anti-interference, 10+ year lifespan) acts as the core, adapting to humid, dusty greenhouse environments. It offers ±0.5℃ temperature control accuracy, plus remote monitoring (via mobile APP) and fault alerts—reducing crop losses from equipment issues.

Future Outlook

The system aligns with green agriculture: a 700㎡ greenhouse cuts 6 tons of CO₂ yearly. Future upgrades may add IoT soil/gas monitoring or "solar heating + PV power." SOLETKS will further explore solar-energy coupling, expanding the system’s global application to boost winter veg supply and farmers’ income.