In short
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Japan's current EV charging standards are J1772 and CHAdeMO, and infrastructure is being rapidly developed in urban areas.
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Home charging and quick charging make it highly practical for everyday use, and it is also more cost-effective than gasoline vehicles.
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Issues remain for regional and long-distance travel, but buying an EV now is quite realistic depending on the usage environment.
Introduction: Is buying an EV in Japan now a wise decision?
This time, I will stray slightly from topics such as ESG and renewable energy and consider the timing of purchasing an EV (electric vehicle).
In fact, I went on a business trip to Jakarta, Indonesia in July 2025.
During that trip, I was shocked to see so many electric vehicles made by BYD, a Chinese electric vehicle manufacturer.
When I visited Jakarta last year in 2024, I was amazed to see electric cars from South Korea's Hyundai and China's Wulin running around the streets of Jakarta, and this time the impact was just as great.
In Japan too, electric cars, especially Tesla, are becoming more and more common on the streets.
However, I think there are still many people who feel that it is not very user-friendly, so I decided to take a closer look at it.
We will provide a comprehensive explanation of EV charging standards and their current status in Japan, as well as consider from as many different angles as possible the question, "Is it a good idea to buy an EV now?", including practicality in urban and rural areas and the maturity of current charging technology.
The answer will vary depending on your usage patterns and living environment, but we hope this will be helpful when considering purchasing an EV.
Technical features and standardization status of Japan's EV charging standards
First of all, when it comes to EVs, a big concern or interest seems to be whether they can be charged properly, so I would like to explain the standard.
There are three main standards: "J1772", "CHAdeMO", and "NACS" (North American Charging Standard), which is the standard adopted by Tesla. We will explain them below.
J1772: National standard for normal charging
In Japan, the standard for regular charging is widely used as " J1772 ". This standard is commonly adopted in Japan and North America, and battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs) sold in Japan are basically compatible with J1772.
Standard J1772 chargers use an alternating current (AC) voltage of 100V or 200V, and output is typically in the range of 3kW to 6kW.
A major feature of this voltage range is that it is compatible with household power sources, making installation relatively easy.
A major advantage of standard charging is the low installation costs.
I think this is a huge deal for the average consumer.
If it is a wall outlet type, installation can be done for just a few thousand yen, and even a regular charger itself can be introduced for around 150,000 to 600,000 yen.
This is a significantly lower cost compared to the several million yen price range of quick chargers.
As a result, charging stations are being installed in places where cars are parked for long periods of time, such as homes, offices, and accommodation facilities, and are now establishing themselves as a basic form of charging infrastructure.
CHAdeMO: The international standard for fast charging
In the field of rapid charging, the " CHAdeMO " standard, which was developed under a Japanese leadership, has been widely adopted both domestically and internationally.
This standard was established in 2010, and currently there are approximately 61,000 units installed in over 112 countries around the world, making it a charging standard that is highly recognized internationally.
A notable feature of CHAdeMO is its ability to supply DC electricity with a maximum output of 400kW.
With this method, AC power is converted into ultra-high voltage DC power within the charger and sent directly to the EV's battery.
This standard is continually being updated, with the maximum voltage being expanded to 1000V in 2018, enabling an output of 400kW, and work is underway to support a maximum output of 900kW in 2021.
Such technological innovations are creating infrastructure that can accommodate future EVs equipped with large-capacity batteries.
NACS: Probably the future global standard
NACS was originally a Tesla-specific standard, but later, as part of efforts to standardize it, the name was changed to simply NACS.
The small size of the charging port makes it very convenient, and there is a growing trend for EV manufacturers, including Japanese ones, to adopt NACS.
Tesla cars sold in Japan are characterized by the fact that they use a unique charging port that is different from other vehicles. Tesla cars support both normal charging and quick charging with a single charging port, making them highly convenient.
However, if you want to use a standard Japanese charger, you will need a special adapter.
There are two types, one for normal charging and one for quick charging, and you need to use them depending on the situation.
As of June 2025, there will be 132 Tesla-exclusive superchargers in Japan, totaling 669 units.
Compatibility – Compatible with adapters
As mentioned above, there seem to be a variety of charging standards, but by using an adapter you can use a charging port of a different standard, so it seems that differences in charging standards will not cause any problems in use.
Also, as I mentioned regarding NACS, we are now seeing a lot of information that suggests that in the future, everything may be unified under NACS.
Nationwide EV charging infrastructure development status and regional disparities
According to GoGo EV , as of the end of December 2024, the number of EV charging spots installed in Japan will reach 24,592.
This represents an increase of 4,828 locations, or 24.4%, in approximately one year and nine months from 19,764 locations as of March 2023, indicating a steady expansion of charging infrastructure.
Looking at the breakdown, there are 11,804 CHAdeMO standard quick chargers, 31,432 200V regular chargers, 204 100V regular chargers, and 954 Tesla-specific chargers, meaning that the number of regular chargers is approximately 2.7 times that of quick chargers.
This makes sense given that standard chargers have lower installation costs.
Furthermore, the government has set a target of installing 300,000 charging infrastructure points by 2030, making it necessary to accelerate the current installation pace.
In response to this, national and local governments are implementing measures such as subsidy systems, support for technological development, and collaboration with private businesses.
Looking at the installation situation by prefecture, Tokyo has the most charging infrastructure in the country, with 2,665 200V regular chargers and 860 CHAdeMO rapid chargers.
I think this is something you can imagine.
Next are Aichi Prefecture (1,952 regular units and 786 rapid units), and Osaka Prefecture (1,612 regular units and 502 rapid units).
On the other hand, the development of charging infrastructure is relatively lagging in rural areas. For example, in Tottori Prefecture, there are only 225 regular chargers and 90 rapid chargers, creating a clear gap with urban areas.
Also, when looking at the installation status by facility, the most common locations for quick chargers are convenience stores, followed by shopping malls/retail stores, and roadside stations.
On the other hand, the most common locations for standard chargers are accommodation facilities and hot spring facilities, followed by leisure and sports facilities, and shopping malls and retail stores, suggesting that installation trends are based on the usage scenario.
Ease of charging and practicality in everyday use
Analysis of the relationship between charging time and driving distance
I think the relationship between charging time and driving range is an extremely important issue when evaluating the practicality of an EV.
For example, with a typical 200V standard charger (3.2kW), it takes approximately 12.5 hours to fully charge a 40kWh battery from zero.
This figure is equivalent to the standard model of the Nissan Leaf, and converts to an actual mileage of approximately 250 to 300 km.
However, for everyday use, there is no need to fully charge it every time, and it seems that a few tens of kilometers per day would be sufficient for commuting and shopping.
For example, charging for 40km takes about two hours using a standard 200V charger, but only takes about one hour using a high-output standard 6.0kW charger.
With a standard quick charger with an output of 50 kW, it is possible to charge the battery to about 80% in approximately 30 minutes.
This characteristic makes it extremely useful at motorway service areas and for intercity travel, making it a practical choice.
However, due to the fact that the charging speed decreases as the charging rate increases, the actual charging time may vary depending on the remaining battery charge and the vehicle model.
Comparison of economy and convenience
From an economic perspective, the charging costs of EVs have a clear advantage over gasoline vehicles, meaning they are considered to be good value for money.
Assuming a monthly drive of 800km (9,600km per year), a gasoline vehicle would cost approximately 8,570 yen per month in fuel costs, assuming a fuel efficiency of 14km/l and a gasoline price of 150 yen/l. On the other hand, for an EV, assuming an electricity cost of 7km/kWh and an electricity rate of 35 yen/kWh, the monthly cost would be approximately 4,000 yen, a cost reduction of approximately 53%.
As of July 2025, gasoline prices will likely be a little higher, meaning the gap will widen even further.
In addition, the costs of installing charging equipment at home are relatively reasonable.
The initial cost for a wall charger is around 200,000 to 500,000 yen, while a standard charger can be introduced with an initial cost of around 300,000 to 1,000,000 yen.
By installing it as shared equipment in apartment buildings and offices, costs can be spread among users.
In terms of convenience, EVs also seem to offer great advantages.
In particular, the ability to charge at home overnight is a major benefit for users, as it means they can use the car without disrupting their daily lives.
The fact that there is no need to stop at a gas station and you can set off every morning with a nearly fully charged battery is likely to be a major attraction for everyday use.
Charging anxiety and practical solutions
One of the most commonly cited concerns about purchasing an EV is "charging anxiety."
However, given the actual usage, this concern does not appear to be significant.
For example, an EV can travel 6 to 7 km per kWh, so if your commute is about 20 km one way, you will only need to charge it for one day for less than 10 kWh.
If it's only this much, charging at home overnight will be sufficient.
For long-distance travel, rapid charging infrastructure is also being developed, and rapid charging stations are being installed along major routes such as expressways at intervals that allow vehicles to travel to the next charging spot with just 30 minutes of charging.
The problem is in rural and mountainous areas, where the distances between charging spots are long and advance charging planning is necessary. For those who travel frequently in these areas, purchasing an EV will likely require careful consideration, including how often they will use the vehicle and checking the details of charging spots.
In order to alleviate such concerns about charging, it is thought that utilizing a system that provides information on charging spots in real time would be effective.
By using information sharing sites such as "GoGoEV" mentioned above, you can easily find out the operation status and location information of charging stations around your current location, which may be useful when planning trips or long-distance journeys.
Evaluating the appropriateness of purchasing an EV at this time
Appropriateness analysis by usage pattern
As explained above, the decision of whether or not to purchase an EV appears to vary greatly depending on a user's area of residence and driving patterns.
For example, if you live in an urban area and use your car primarily for daily commuting and shopping, purchasing an EV at this time seems like an extremely rational choice.
Installing a standard charging station at home eliminates the need to stop at a gas station and reduces charging costs, making it highly rated in terms of both economy and convenience.
Even for business use such as sales vehicles or delivery vehicles, purchasing an EV seems like a more reasonable option if the driving route is consistent, power consumption is predictable, and charging is possible at the vehicle's base.
In particular, for jobs that mainly involve short- to medium-distance travel in urban areas, EVs have an advantage in terms of environmental performance.
However, for tasks involving long-distance transportation or frequent travel in mountainous areas, the current infrastructure may limit its practicality, so careful consideration is needed.
On the other hand, people living in rural areas or those whose lifestyle involves long-distance travel need to be extra cautious when purchasing an EV.
This may not be a problem for people who charge at home and find that the charge is enough for their travels, but if you travel long distances frequently, it seems that finding a charging spot can be stressful.
Due to regional differences in the development of charging infrastructure, there is a risk that freedom of movement will be restricted.
Considering sudden travel and emergency response, electric vehicles are less flexible than gasoline-powered vehicles, so it will be necessary to thoroughly examine the compatibility of usage patterns with the infrastructure.
Purchase timing evaluation from a technical perspective
Current EV charging technology has reached a certain level of maturity in terms of both standards and performance, and from a technical perspective it cannot be said that there is any disadvantage to "buying now."
For example, the CHAdeMO standard, the international standard for rapid charging, is continually being updated to increase power output, and is now capable of supporting a maximum output of 900kW.
Even existing EVs are designed to be able to enjoy the benefits of such high power output to a certain extent, so there seems to be no need to worry too much about the risk of the vehicle becoming obsolete after purchase.
In addition, battery technology is improving year by year, and we are seeing performance improvements such as longer driving range and shorter charging times.
Many of the current models have sufficient performance for everyday use, and it can be said that we are no longer at the stage where we need to be wary of them as "developing technologies."
The government is continuing to provide policy support toward the goal of installing 300,000 units by 2030, and this trend is expected to accelerate further in the future.
For all of the above, purchasing an EV can be said to be a realistic option from a technical standpoint as well.
Economic justification for the investment
When economically evaluating the purchase of an EV, it is important to balance the payback period of the initial investment with the potential savings in operational costs.
In general, EVs tend to be more expensive than gasoline-powered vehicles, but it is likely that EVs have an advantage in terms of total cost due to significant reductions in fuel costs and reduced maintenance costs due to less frequent regular inspections and part replacements (this seems especially true given the recent rise in gasoline prices).
In addition, by taking advantage of subsidy programs offered by the national and local governments, it is possible to significantly reduce the initial investment amount.
In addition to subsidies at the time of purchase, subsidies may also be available for the installation costs of charging equipment, so if you make good use of the system, it is possible to reduce the financial burden.
However, since these subsidy systems are easily affected by budget and policy changes, it will likely be necessary to plan purchases carefully after keeping up with the latest information.
Additionally, value retention of EVs in the used car market also needs to be considered.
Due to the rapid evolution of EV technology, it is difficult to accurately predict future resale prices, and it is true that there remains risk as an investment.
On the other hand, as regulations on internal combustion engine vehicles progress in various countries, it has been pointed out that the asset value of EVs may increase relatively in the long term.
At the moment, we are hearing that resale prices are lower than those of gasoline-powered vehicles, so there may still be a way to go in this regard.
Conclusion: Comprehensive purchase recommendation based on charging standards
In light of the above, the conclusion on whether or not it is OK to or should I purchase an EV now is likely to be that it is OK and should be purchased, subject to conditions based on usage patterns and area of residence.
The technical foundations are already in place thanks to the established charging standards J1772 and CHAdeMO, and the charging infrastructure is steadily expanding, particularly in urban areas.
It seems that purchasing an EV at this time is a good idea, especially if you live in an urban area and will mainly use your car on a daily basis.
By creating a charging environment at home, you can enjoy the benefits of both convenience and economy, and also minimize "charging anxiety."
There also appear to be benefits for applications such as commercial and delivery vehicles, as long as driving patterns are predictable.
On the other hand, if you live in a rural area or plan to travel long distances, you will likely need to carefully evaluate regional disparities in charging infrastructure before considering a purchase.
In particular, when sudden movements or emergency responses are required, restrictions on the placement of charging spots and charging times may affect actual operations.
However, with the government's infrastructure development policy and the expansion of the charging network through investment from private companies, the environment is certainly being put in place.
As mentioned above, it seems fair to conclude that, under certain conditions, purchasing an EV is a rational choice that combines sufficient practicality at the present time with future potential.
When considering a purchase, it is important to consider your own usage environment, the area where you live, and the details of the subsidy system.
After looking at each company's website, it doesn't seem like the prices are excessively higher than gasoline vehicles, so I would like to consider purchasing an EV myself.
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