In the competition to lead the energy transition, the field of stationary batteries has become a key scenario. For years, Tesla set the pace with its Megapacks, considered a benchmark in the sector.

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However, BYD's emergence with its new HaoHan system has changed the tone of the conversation: it's no longer just about keeping pace with Elon Musk, but about surpassing him on his own turf.

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The Chinese giant, which is already positioned as one of the largest manufacturers of electric cars and batteries in the world, you have decided to make a statement with a product that multiplies the capacity and efficiency of what was previously the benchmark. With HaoHan, BYD shows that it not only wants to compete, but also to lead in large-scale energy storage.

An unprecedented capacity

While Tesla updated its Megapack 3 to reach 5 MWh, BYD has decided to raise the stakes to another level. HaoHan offers up to 14.5 MWh in a single system, a figure that triples that achieved by its American rival.

In large containers, the system reaches 10 MWh, thus maintaining deployment flexibility for different types of projects.

The secret of this power lies in the 2,710 Ah Blade Battery, the heart of the system. It is the largest cell used to date in stationary storage, designed not only to offer greater capacity, but also to optimize space.

With a VCTS (volume-cell system ratio) of 52.1%, BYD claims to achieve the highest utilization in the world in this field.

Downward costs and maintenance

One of the biggest concerns in large-scale projects is the total cost of installation and operation. According to BYD, HaoHan allows a 21.7% in the costs associated with the development of energy projects thanks to the fact that fewer systems are required to deploy the same capacity.

But that's not all: the company claims to have managed to reduce system failures by 70% and,in parallel, also by 70% in maintenance costs.

This double benefit is especially attractive for electricity grid operators and companies that manage renewable installations, where efficiency and reliability are essential.

GC Flux: the technological ally

In the style of Tesla, which accompanies its batteries with integrated solutions, BYD also presented GC Flux, a scalable "grid-forming" inverter that goes from 2.5 to 10 MW. This device is not a simple accessory, but a key component of overall performance.

The company claims that GC Flux offers 38% more efficiency than the industry average, 130% higher power density, and a peak efficiency of 99.35%.

In addition, it has advanced features such as real-time voltage and frequency regulation, active inertia response of up to 25 seconds, and ultra-fast regulation in less than 100 milliseconds. These features make it a fundamental element for networks with a high participation of renewable energy and hybrid systems that require stability during operating transitions.

Proprietary software for energy management

BYD has not limited itself to hardware. The company also introduced GC Master EMS, a capacity management and optimization system for its new batteries.

The solution is reminiscent of Autobidder, Tesla's software designed to maximize revenue in electricity markets, and confirms that the Chinese company's strategy seeks to encompass the entire storage ecosystem.

With this software, operators can better manage demand, stabilize networks, and take advantage of business opportunities in increasingly dynamic electricity markets.

Saudi Arabia, first major deployment

HaoHan's commercial debut will not be long in coming. BYD has already secured massive orders, and its system will be the centerpiece of a 12.5 GWh megaproject in Saudi Arabia. This figure is equivalent to Tesla's entire deployment in an entire quarter within the energy storage sector, which gives an idea of ??the magnitude of this contract. Beyond the numbers, BYD's great value lies in the fact that it produces its own cells internally, the most expensive part of any storage system. This vertical integration gives it a strategic advantage over Tesla, which relies on external suppliers for part of its production.