Shanghai 302.5 kWp Photovoltaic Rooftop Project
Case introduction

CASE

Case

Shanghai 302.5 kWp Photovoltaic Rooftop Project

The Shanghai 302.5 kWp Photovoltaic Rooftop Project is an innovative energy application that combines both economic and environmental benefits. The project is located on the company’s rooftop, taking advantage of the large rooftop area, unobstructed space, and ample sunlight. By fully utilizing the existing building space without the need for additional land acquisition, the project enables self-generated electricity, effectively reducing electricity costs.



Operational Performance

The system is installed with 302.5 kWp. Since the photovoltaic system has been operational, the company’s electricity costs have decreased, and excess electricity can be sold back to the grid, achieving a win-win situation for both economic and environmental benefits.

Site Selection Considerations

The rooftop was chosen as the location for the photovoltaic power generation project mainly because:

The rooftop area is large, unobstructed, and receives ample sunlight.

Utilizes the existing building without the need for additional land acquisition.

The electricity generated is for self-use, reducing power costs.

System Components

The photovoltaic system includes:

Photovoltaic Panels: Convert solar energy into electrical power.

Inverters: Convert DC power to AC power.

Energy Storage System: Stores excess electricity.


Project Video

Shanghai 302.5 kWp Photovoltaic Rooftop Project

Project advantages

Significant Economic Benefits
Significant Economic Benefits
After the installation of the 302.5 kWp photovoltaic system, the company’s electricity costs have been significantly reduced. Additionally, excess electricity can be sold to the grid, resulting in increased economic returns. The investment has provided substantial returns, effectively optimizing the company's energy cost expenditure.
Superior Site Selection Advantages
Superior Site Selection Advantages
The project is located on the rooftop, which offers a spacious area with no obstructions and abundant sunlight, providing an ideal location for photovoltaic power generation. At the same time, by utilizing the existing building, no additional land acquisition is required, saving land resources and construction costs, and achieving efficient use of space.
Complete System Composition
Complete System Composition
The photovoltaic system, consisting of photovoltaic panels, inverters, and an energy storage system, has complete energy conversion and storage functions.

Core products

Satellite Communication Energy Cabinet
Satellite Communication Energy Cabinet

The Satellite Communication Energy Cabinet is a PV energy storage cabinet from Highjoule Technology Group designed specifically for off-grid satellite communication sites. The system consists of PV modules, an MPPT solar controller, an LFP (Lithium Iron Phosphate) battery pack, a thermal management system, and a power distribution unit, forming a complete off-grid PV generation and energy storage system that provides stable power to satellite communication base stations. The system adopts a modular design and can be efficiently operated and maintained via local and remote monitoring. It supplies 48V DC and AC 120V–200V power to satellite and other industry communication equipment, supporting floor-standing and pole-mount installation.

Outdoor Battery Cabinet
Outdoor Battery Cabinet

The Outdoor Battery product line is centered on green low-carbon, high-efficiency, and intelligent coordination principles. It covers both indoor and outdoor configurations, with lithium batteries (or lead-acid batteries) forming battery energy storage cabinets. Each cabinet also houses environmental sensors, battery circuit breakers, battery cables, and thermal management accessories to form an integrated battery cabinet.

Hybrid Power System
Hybrid Power System

The Site Hybrid Power System is a next-generation multi-energy integrated power supply for 4G/5G base stations, communication equipment rooms, edge data centers, and outdoor compact sites. It breaks the traditional “single grid input, single DC output” architecture to achieve multi-source energy input + multi-voltage output + intelligent coordinated dispatch. At the site level, it accommodates grid power, PV, energy storage, diesel generators, and other sources, delivering a highly reliable, efficient, and simply deployable power framework for 5G equipment, transmission equipment, and IoT loads. Power range: 6 kW–36 kW; available in both 3U and 1U circuit breaker configurations.

Stacked-PV MPPT Solar Controller
Stacked-PV MPPT Solar Controller

The Stacked-PV MPPT Solar Controller is specially developed for PV capacity expansion at base station sites. Using a series-connection scheme, the system consists of PV modules, a stacked-PV MPPT controller, and a DC meter. Each PV string is series-connected to the controller, which steps down the module output voltage to −48V and injects it onto the rectifier output busbar to supply DC loads. Designed for communication base stations, it supports wall-mount and pole-mount installation. The product is available in outdoor and rack-mount versions.

Outdoor Hybrid Energy Cabinet
Outdoor Hybrid Energy Cabinet

The products deeply integrate AC/DC conversion, multi-energy intelligent scheduling, energy storage charge/discharge management, and remote monitoring technologies. Flexibly deployable in indoor equipment rooms, outdoor 5G base stations, and remote sites, they ensure uninterrupted power for communications and critical loads while maximizing green energy consumption, reducing energy use and carbon emissions, and upgrading traditional power supply to a clean, intelligent, integrated site energy solution.

Solution

Professional Integrated "Turnkey" Service System

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