Hotels do not all need the same EV charging setup. A resort guest may leave a car parked overnight, while someone visiting a hotel restaurant or attending a conference may stay for only two hours. Both guests want convenient charging, but they place very different demands on a charging space.

That is why comparing a 20–40 kW compact DC charger with a 22 kW AC wallbox requires more than comparing their rated power. For hotel operators, the better question is: Can the charger deliver enough energy during the guest’s stay, at a cost and utilization level that makes sense for the property?

Start with how guests use the parking area

For overnight guests, AC charging is often the natural starting point. A vehicle parked for most of the evening has time to charge without requiring the driver to return and move it. The hotel can focus on providing enough accessible charging spaces and managing the combined electrical load.

Compact DC charging serves a different need. At hotels with restaurants, meeting facilities or frequent daytime visitors, some drivers have much less time. A dedicated DC space may help them obtain a useful top-up before departure and allow the space to serve another vehicle later in the day.

This does not mean every hotel must choose one technology. A property with both overnight and short-stay demand can assign AC wallboxes to long-stay spaces and compact DC chargers to faster-turnover spaces. OLINK offers both 20/30/40 kW wall-mounted DC chargers and 7–22 kW AC wallboxes as product options for project evaluation. Exact configurations should be confirmed for the site.

Why rated power does not tell the whole story

A 22 kW AC wallbox does not make every vehicle charge at 22 kW. The vehicle’s onboard charger converts incoming AC power for the battery, and its capability affects the charging rate. DC charging takes a different route, but its actual power can still vary with the vehicle and battery state.

Consider a guest who needs approximately 30 kWh during a two-hour visit. If their vehicle accepts only 11 kW on AC, the theoretical maximum over that period is about 22 kWh, before losses and other limits. A 20 kW DC unit has a theoretical two-hour maximum of 40 kWh, but the vehicle may draw less at points during the session. The example illustrates the decision; it is not a guaranteed charging result.

The practical comparison is therefore energy delivered during a typical visit, measured with vehicles the hotel expects to serve. That is more useful than placing “22 kW AC” and “20 kW DC” side by side on a specification sheet.

Where does the operating value come from?

For an overnight charging space, value may come from offering a reliable amenity to more guests. A driver who plugs in after check-in and leaves the next morning may care more about finding an available charger than about the highest possible power rating.

For a short-stay space, value may come from time and turnover. If a DC charger helps several visitors obtain the charge they need in a day, it may support a different service or revenue model. But higher power creates little benefit if the space is rarely used—or if a vehicle remains parked there long after charging ends. Parking rules and the guest experience are part of the equipment decision.

Hotels should compare each proposed layout using the number of vehicles expected to charge, typical parking duration, energy delivered per session, installation work, available electrical capacity and ongoing costs. If charging is paid, expected revenue matters too. These figures must come from the property’s own plans or pilot data; a charger’s rated output cannot establish a project return on its own.

Choosing between 20, 30 and 40 kW DC

Within the compact DC range, more power is useful only when the site and its customers can use it.

A 20 kW unit may be worth considering where available electrical capacity is limited and the goal is a moderate top-up. 30 kW may suit a property seeking more energy during shorter visits. 40 kW deserves consideration where quick top-ups and parking turnover are especially important. None is automatically the best hotel model.

Before selecting a rating, confirm the vehicles and DC connectors the hotel expects to serve, the available site capacity and the desired energy per visit. Then compare the proposed models under those conditions. Connector type alone is not proof that a particular vehicle will achieve the expected charging result.

Test the proposed setup before a wider rollout

A small site pilot can resolve questions that product specifications cannot. Test representative vehicles on the proposed AC and DC equipment, ideally during the parking periods the hotel actually serves. Record whether sessions start successfully, how much energy is delivered before departure, whether any sessions stop unexpectedly and how easily guests can access the service.

The hotel should also test its operating process: Can staff tell when a charger needs attention? How will a blocked DC space be handled? Does the planned payment or access method work for guests? A technically successful charging session is only one part of a useful hotel service.

Frequently asked questions

Is a 22 kW AC wallbox as fast as a 20 kW DC charger?

Not necessarily. AC charging depends in part on the vehicle’s onboard charger, while DC charging power can also change during a session. Compare the actual energy delivered within the guest’s parking time.

Does a hotel that mainly serves overnight guests need DC charging?

It may, particularly if it also serves restaurant, conference or other short-stay visitors. If demand is almost entirely overnight, the first question is usually how many guests need access to AC charging spaces.

Is 40 kW always better than 20 kW for a hotel?

No. The additional output has value only if the target vehicles can use it, guests need it during their stay and the site can support it at an acceptable project cost.

Make the decision around the property

For most hotel projects, the choice begins with a map of who parks, where they park and how long they stay. Use that information to plan AC charging for extended stays and assess whether compact DC charging solves a distinct short-stay need. Then verify the proposed equipment with representative vehicles and the site’s electrical conditions.

OLINK can review the hotel’s parking layout, expected vehicles, available power and operating requirements to recommend specific AC and DC configurations. Request a Project-Specific Quote with these details so the proposed models can be checked for your project.