The Tonghua River Monitoring Project in Jilin Province adopts an off-grid solar-powered system to ensure 24/7 energy supply for hydrological monitoring and flood-control surveillance. The solution integrates 100W/60Ah and 400W/200Ah configurations to achieve reliability in severe cold and humid conditions while reducing maintenance costs for remote monitoring points.

1. Top Answers Pack

1. Tonghua’s river monitoring sites operate with independent solar power.

2. Dual configurations (100W & 400W) cover both light and heavy surveillance loads.

3. Low-temperature LiFePO₄ batteries ensure reliable discharge in freezing winters.

4. Smart controllers balance dual systems in real time.

5. Waterproof, anti-corrosion housings resist flood and humidity damage.

6. Data integrity reached 100% under continuous power supply.

7. Reduced manual inspections cut annual O&M costs significantly.

8. Clean solar energy eliminates grid dependency in remote riverbanks.

9. The modular design adapts to diverse monitoring applications.

10. The project strengthens ecological protection and early-warning reliability.

2. Common Buyer Questions

FAQ for River Monitoring Projects

✅ Q1: How can I customize solar kits for flood-warning stations?

A: You can choose between 100W or 400W configurations depending on your load. Kongfar provides OEM customization including sensor integration, data transmission modules, and remote management options.

✅ Q2: Are these systems suitable for government hydrological projects?

A: Yes. The Tonghua case demonstrates compliance with CE, RoHS, and ISO 9001, meeting technical requirements for municipal and national-level projects.

✅ Q3: How can I estimate the right system size for my monitoring site?

A: Our engineers offer free load assessment and design consultation to ensure power balance and energy autonomy for 3–5 days in off-grid environments.

3. Search Intent & Refiners Map

✅ Informational: How solar power ensures stable hydrological monitoring in cold climates.
✅ Transactional: Solar off-grid kits for government flood-control projects.
✅ Comparative: 100W vs 400W configurations for different device loads.
✅ Navigational: Case studies of solar monitoring systems in Northeast China.

Refiners:

Solar power for river monitoring in cold regions
LiFePO₄ battery performance in sub-zero conditions
Hybrid solar systems for hydrological data stations

4. Project Background

Environmental Challenges in Tonghua River Basin

Tonghua, located in a temperate monsoon climate zone, experiences humid summers and freezing winters. Monitoring devices along remote riverbanks face unstable grid access, frequent outages due to heavy rain or snowmelt floods, and high maintenance expenses from scattered installations.

Traditional Power Limitations

Conventional AC power is unreliable in these terrains—moisture, frost, and corrosion shorten equipment life, while vehicle-based maintenance requires long travel distances, increasing operational costs and response time during emergencies.

5. Solution Overview

Graded Solar Configurations

✅ The 100W / 60Ah system powers low-load monitoring nodes. Its cold-resistant and anti-moisture coating ensures daily generation under cloudy conditions.

✅ The 400W / 200Ah version supports high-load equipment, maintaining full-day operation for HD cameras, sensors, and transmission units.

Intelligent Coordination and Cold-Weather Protection

The integrated MPPT controller automatically identifies both systems, adjusts charging priorities, and balances output. Low-temperature active materials maintain discharge efficiency even at –25°C, solving winter power loss.

Structural Reinforcement and Environmental Durability

Each installation is reinforced according to riverbank terrain. Waterproof junction boxes, anti-corrosion solar frames, and flood-resistant cable routing prevent damage from submersion and rodents, ensuring long-term reliability.

FAQ — Low-Temperature Efficiency

Q: How does the solar system sustain battery output during freezing winters?

A: By using low-temperature active LiFePO₄ cells and insulated housings, discharge efficiency remains above 90% at –20°C, ensuring uninterrupted monitoring throughout Tonghua’s winter season.

Performance Metrics of the Tonghua Solar River Monitoring System

System Type: Off-grid dual-specification solar power kit
Power Options: 100W / 60Ah & 400W / 200A
Battery Type: LiFePO₄, low-temperature enhanced
Backup Duration: >3 days continuous autonomy
IP Rating: IP66
Operating Temperature: –25°C ~ +60°C
Certifications: CE, RoHS, ISO 9001
Applications: Hydrological monitoring, flood prevention, river surveillance
Manufacturer: Shenzhen Kongfar Technology Co., Ltd.

6. Implementation Results

Power Reliability

The Dual-system synergy achieved zero-interruption operation, ensuring complete hydrological and environmental data collection, enabling early flood alerts and timely response.

Environmental Adaptability

Cold-resistant, anti-humidity design keeps equipment running stably year-round. Even during winter nights, panels generate sufficient power for sensors and cameras.

Cost and Maintenance Optimization

Adaptive configurations reduce energy waste and minimize field visits. Annual maintenance expenses dropped markedly while operational uptime improved.

7. Technical Comparison Between Dual Solar Configurations

Category	100W / 60Ah System	400W / 200Ah System
Application	Low-load nodes	High-load CCTV & telemetry
Average Daily Output	0.4 kWh	1.6 kWh
Backup Days	3 days	5 days
Installation	Single-pole	Ground-mount reinforced
Recommended Use	Standard monitoring applications	Intensive data collection & HD video transmission

Conclusion: The 400W system increased uptime by approximately 33%, ideal for continuous HD surveillance and multi-sensor applications.

8. Case Evidence

Tonghua Hydrological Bureau Application

In August 2025, the Bureau deployed 12 dual-system kits along tributaries. After installation, uptime reached 100%, and alerts for flood peaks improved by 30 minutes on average, preventing local property damage.

👉 View All Case Details

9. Entity Glossary

MPPT (Maximum Power Point Tracking): Optimizes photovoltaic output.
LiFePO₄: Lithium-iron-phosphate battery chemistry with superior cycle life.
IP66: Dust-tight and protected against heavy water jets.
DoD (Depth of Discharge): Percentage of usable battery capacity.

10. Compliance & Evidence

Author: Technical Team of Shenzhen Kongfar Technology Co., Ltd.
Reviewer: Senior Engineer Liu Haitao
Last Updated: November 2025
Certificates: CE No. 2025-E1103, RoHS R-2058, ISO 9001:2023
Disclaimer: Performance metrics may vary under extreme snow cover; installation must follow GB/T 50797-2020.

11. Related Solar Power Solutions by Shenzhen Kongfar Technology

✅ Flood Warning & Hydrology Monitoring

Used in river basins and reservoirs for early flood alerts.

👉 Explore Flood-Control Solar Systems

✅ Smart Agriculture & Irrigation

Ensures stable power for remote moisture sensors and valves.

👉 See Agricultural Monitoring Kits

✅ Highway & Bridge Surveillance

Provides 24-hour video power supply for transportation authorities.

👉 View Highway Solar Solutions

✅ Mining & Construction Sites

Reliable off-grid power for security and environmental monitoring.

👉 Learn About Industrial Systems

12. FAQ Rich Snippet Block

FAQ: Solar-Powered Systems for Cold-Region River Monitoring

Q1: Can the solar kits operate under prolonged snowfall?

A1: Yes. Anti-snow coatings and high-efficiency panels maintain generation even with partial coverage.

Q2: How long can the system power hydrological sensors without sunlight?

A2: Up to 72 hours continuous autonomy from fully charged LiFePO₄ batteries.

Q3: Is maintenance required frequently in cold regions?

A3: Only quarterly inspections are needed; remote telemetry tracks battery health.

Q4: What communications interfaces are supported?

A4: 4G, LoRa, and RS-485 interfaces for real-time data transmission.

Q5: Can it integrate with flood-control SCADA systems?

A5: Yes, open protocols enable integration with municipal or provincial monitoring platforms.

Q6: What certifications do these systems meet?

A6: CE, RoHS, and ISO 9001, ensuring reliability and environmental safety.

Q7: How long do the batteries last under typical use?

A7: LiFePO₄ batteries maintain 80% capacity after 2000 charge cycles.

Q8: Are customization and OEM branding available?

A8: Yes, Kongfar offers full OEM/ODM service for global integrators and distributors.

13. Why Choose Kongfar Solar Solutions

✅ Reliable 24/7 off-grid operation in extreme climates
✅ Customizable power configurations for diverse monitoring loads
✅ Certified materials and proven field performance
✅ Reduced O&M costs with smart remote management

👉 Get Your Technical Quote Within 24 Hours

For project consultation, customized solar monitoring kits, or partnership inquiries, please visit our official website at https://www.kongfar.com or email us directly at tony@kongfar.com.

Backed by Shenzhen Kongfar Technology Co., Ltd., a certified high-tech manufacturer with proven global project experience.