The combination of photovoltaics (PV) and energy storage is becoming an effective pathway for industrial and commercial enterprises to reduce electricity costs.
While self-generated PV power directly lowers electricity bills, energy storage leverages peak-valley price differentials; together, they smooth out output fluctuations and perform peak shaving and valley filling.
As an active practitioner of this model, Toyon Energy has successfully connected its integrated solar-storage project—built at the headquarters of its parent company, Tongyuan Environment—to the grid. This project serves as a tangible, quantifiable, and replicable model for other industrial and commercial enterprises.
Efficient Construction Demonstrates Professional Expertise
Located on the roof of the group's headquarters, the project makes full use of previously unused rooftop space. The Toyon Energy team managed the entire process—from design and construction to commissioning—efficiently completing module installation and system integration, and achieving successful grid connection on the first attempt.
PV Installed Capacity: 73.84 kWp (DC side) / 60 kW (AC side)
Energy Storage System Capacity: 125 kW / 261 kWh
Solar-Storage Integration: Achieving a "1+1 > 2" Effect
Unlike standalone PV installations, the core highlight of this project is the deep integration of PV and energy storage. The supporting energy storage system employs an industry-leading "two-charge, two-discharge" operational strategy:
During the day, PV-generated electricity supplies the building first, with excess power automatically stored in the battery system;
When PV output is insufficient, the energy storage system discharges to supplement the supply;
The system charges during off-peak (valley) hours at night and discharges during morning "peak" and evening "peak" periods, completing two charge-discharge cycles daily to maximize revenue from peak-valley price differentials.
Additionally, the energy storage system smooths out fluctuations in PV output. It supports the load alongside the PV system during peak usage times—relieving pressure on transformer capacity—and can provide short-term backup power to critical loads in the event of a grid failure. Through this complementary interaction of charging, discharging, storing, and supplementing, the system truly achieves an energy efficiency value where the whole is greater than the sum of its parts (1+1 > 2). Anchored at Headquarters, Extending Across the Industry
The successful operation of the solar-plus-storage project at Tongyuan Environment’s headquarters not only supplies green electricity and reduces carbon emissions annually but, more importantly, serves as a "real-world showcase platform." It vividly demonstrates Toyon Energy’s technical prowess across the entire value chain—spanning investment, construction, management, and operations.
Toyon Energy is a core subsidiary of Tongyuan Environment (Stock Code: 688679). Leveraging the Group’s deep expertise in environmental protection and infrastructure, the company is rapidly transforming into a comprehensive energy service provider.
Toyon Energy’s business spans diverse sectors—including residential green power, multi-energy complementary systems for industrial and commercial clients, centralized renewable energy projects, smart O&M (operations and maintenance), and power trading—delivering solutions for energy applications across all scenarios. With capabilities covering the entire industry chain—from investment and development to smart O&M—the company provides one-stop new energy solutions for both enterprises and households.
The successful implementation of this headquarters solar-plus-storage project reflects Toyon Energy’s confidence in its technological capabilities. Moving forward, the company will continue to uphold its core principles of professionalism, efficiency, and safety, providing one-stop services to help more industrial and commercial partners achieve their zero-carbon transitions.