The peak power of a single flash charging pile can reach 1,500kW, which can add about 400km of battery life to an adapted model in 5 minutes. However, during holidays, you may see its "stop charging" speed plummeting to several hundred kilowatts, and the anxiety of queuing will instantly return.
In the high-speed service area, vehicles came like a tide. You plug in the gun, and the numbers on the screen drop all the way from "full", and the car owner's expression changes from expectant to helpless. This is not a black box operation, nor is it a deliberate slowdown by the manufacturer, but a real game between energy storage cabinets, power grids and traffic flow at peak times.
Since March 2026, BYD's megawatt flash charging has been rapidly rolled out, and the advantages are obvious: the standard station is equipped with two sets of 200kWh energy storage cabinets, with a total capacity of 400kWh; the flagship station has been expanded to four sets of 225kWh, with a total capacity of 900kWh. Energy storage is that "instantaneous big furnace" that takes the blame for the power grid at ordinary times and supplies energy to the cars in one go at peak times. However, when the chimney (recharge) is not wide enough, the furnace fire will beco
The peak power of a single flash charging pile can reach 1,500kW, which can add about 400km of battery life to an adapted model in 5 minutes. However, during holidays, you may see its "stop charging" speed plummeting to several hundred kilowatts, and the anxiety of queuing will instantly return.
In the high-speed service area, vehicles came like a tide. You plug in the gun, and the numbers on the screen drop all the way from "full", and the car owner's expression changes from expectant to helpless. This is not a black box operation, nor is it a deliberate slowdown by the manufacturer, but a real game between energy storage cabinets, power grids and traffic flow at peak times.
Since March 2026, BYD's megawatt flash charging has been rapidly rolled out, and the advantages are obvious: the standard station is equipped with two sets of 200kWh energy storage cabinets, with a total capacity of 400kWh; the flagship station has been expanded to four sets of 225kWh, with a total capacity of 900kWh. Energy storage is that "instantaneous big furnace" that takes the blame for the power grid at ordinary times and supplies energy to the cars in one go at peak times. However, when the chimney (recharge) is not wide enough, the furnace fire will become smaller.
When the standard station is fully charged, it can support full-power flash charging of one vehicle for about 16 minutes, or continuously replenish energy for seven 70kWh models. The scene is very intuitive: from 11:00 to 15:00 on weekends, the peak discharge rate is three times that of weekdays. More than 90% of the sites have experienced energy storage less than 20%, and the power has dropped below 300kW. In other words, after the energy storage is "emptied out", the magic of flash charging disappears.
This also involves the carrying capacity of the power grid. About 15% of sites have only 300kW of energy storage and recharging power due to power grid conditions, and cannot make ends meet during peak hours. Imagine that the total power of 4 guns working at the same time may exceed 6000kW. Ordinary transformers cannot handle it at all, and energy storage is needed to "shaving peaks and filling valleys". When there are many cars coming, the discharge speed far exceeds the recharging speed, and speed loss is inevitable.
The good news is that the station is not passively beaten. Operators have worked out a complete set of secrets for "replenishing energy and ensuring supply" in actual combat, from hardware to operations, from power generation to grid coordination, and have gradually controlled the speed drop problem.
After expanding the capacity of the standard station from 2 sets of energy storage to 4 sets and increasing the total capacity from 400kWh to 900kWh, the probability of peak speed drop is reduced by 80%. Many stations use modular energy storage. When the traffic flow is heavy, the "plug-in" can be pulled in immediately, and then removed when the traffic is low, which is flexible and saves money.
Installing photovoltaics on roofs has also become a common practice at sites. Actual measurements show that the integration of light, storage and charging can replenish 15%-20% of electricity for energy storage cabinets every day, and the continuous service capability during holidays in places with good sunshine has been significantly improved. The electricity generated by the sun during the day directly "recharges" the energy storage, giving it more confidence to be self-sufficient during peak hours.
Smarter at the operational level: Install an EMS energy management system to monitor power, load, and vehicle status in real time, and dynamically allocate power. Priority is given to vehicles that are in urgent need and with low battery power, and the power of vehicles that are nearly fully charged is automatically reduced. In this way, the resource utilization rate is greatly improved. Actual measurement data tells us that intelligent scheduling can extend the "life" of energy storage cabinets by about 40%.
Staggered peak guidance is also very useful. Using the APP to make the price difference, appropriately increase the electricity price from 10:00 to 18:00, reduce the price by 20% from 00:00 to 06:00, and prompt the peak time in the station, which can move about 30% of the traffic flow away from the peak, and the energy storage pressure will be reduced accordingly. The flexible charging pile and group control system can automatically limit power when energy storage is insufficient to preserve the output of the core flash charging pile.
By increasing the capacity of the power grid, the recharging power is increased from 300kW to 600kW, and the energy storage full time is almost shortened by half, achieving a dynamic balance of "discharging and charging at the same time". This requires collaboration between operators and the power sector, but the policy level is tilting towards simplifying approvals and the implementation speed is accelerating.
The real test results are a slap in the face to those who only complain. Sampling actual measurements after March 2026 show that: the peak full power duration of the site with capacity expansion and scheduling has increased by 65%; the self-sufficiency rate of optical storage and charging sites has reached 22%, and the service capacity during holidays has doubled; peak shifting + flexible scheduling can disperse the traffic flow by 32% and keep energy storage in a safe range of more than 30%. Car owner satisfaction increased from 72% to 94%, and complaints dropped by 85%.
The optimized site makes "flash charge and stop eating" a controllable event instead of the norm. This shows that technology is not a panacea, but combined punches can solve problems at the operational level, rather than relying on a single propaganda caliber to appease car owners.
Sound expensive? Not exactly. Energy storage expansion, intelligent dispatch, photovoltaic installation, flexible stack control and other solutions are cost-controllable and can be rolled out step by step. In 2026, the industry is transforming from "re-construction" to "re-operation". The goal is to build 20,000 flash charging stations by the end of the year while ensuring that the user experience does not shrink.
The exhaustion of energy storage caused by too many cars is not unique to BYD, but is a common feature of the ultra-fast charging industry, and the solution is also being replicated across the country.
Speaking of which, there are three very realistic options: you can choose to charge at staggered peak times to avoid queues and speed drops during peak times; you can choose to support or supervise the site for capacity expansion and intelligent upgrades; or, you can continue to count on a perfect experience of full power and zero waiting every time. The reality is that perfect service requires costs. Who will bear the costs? Is it market pricing, public-private partnership, or is it regulated by electricity fee structure and policies?
When capacity replenishment changes from a technical issue to a cost and operational issue, who should pay for capacity expansion?
