In Grand Case, they use Type C, D, and E power plugs and outlets. The voltage is 220V, and the frequency is 50Hz.
⚠️ So, you’ll need a travel adapter in Grand Case. Their plugs and outlets are different from the Type A and B ones we use back in the States.
Quick Overview of the Plugs in Grand Case:
- Plug type in Grand Case: C, D, and E
- Standard voltage: 220V
- Frequency: 50Hz
- Need a travel adapter? Yes, you do need a travel adapter
- Need a voltage converter? Probably needed for some devices
- Recommended plug adapter: Vintar Universal Travel Adapter Kit
Our information is collected from local power authorities, verified with IEC international standards, and enriched by feedback from travelers worldwide.
Power Outlets in Grand Case
In Grand Case, they use Type C, D, and E power plugs and outlets.
Type C

Type C outlets have two round prongs and no grounding pin. Type E and F plugs usually fit too, but grounded plugs will need an adapter.
Type D

Type D outlets have three large round prongs in a triangular layout and typically only accept Type D plugs, although Type C plugs might fit loosely and are not recommended for safe use.
Type E

Type E outlets have two round prongs and a grounding pin at the top. Type C and F plugs will also fit.
The Only Travel Adapter You’ll Need in Grand Case
Planning a trip to Grand Case? Make sure you have the right adapter. We don’t sell them, but we’ve done the research to find the best one for your trip—safe, tested, and traveler-approved:
Recommended Travel Plug Adapter
by 1,000+ travelers on Amazon
If you’re already traveling or have arrived at your destination without a power adapter, don’t worry. You can usually pick one up locally. Still, having one with you from the start is the easiest way to avoid delays or surprises.
Grand Case is often combined with visits to nearby islands like Sint Maarten, Anguilla, or Saint Barthélemy. Check which plugs you’ll need before you go.
Do You Need a Voltage Converter?
Before plugging in your electronics in Grand Case, check the voltage. It’s different from the 120V used in the U.S., so you’ll likely need a converter.
Before traveling, always double-check the input voltage label on your device. If it states “100-240V, 50/60 Hz”, your device is designed to handle different power systems and won’t need a converter. This includes most phones, tablets, laptops, cameras, and rechargeable personal care items.

Which Travel Devices May Need a Converter?
Not sure which voltage converter to get? Take a look at the best-rated ones right here.
| Device | Need Converter? | Notes |
|---|---|---|
| Phone | ❌ No (usually) | Most modern phone chargers are dual voltage (100–240V) |
| Laptop | ❌ No (usually) | Check the power brick label for 100–240V |
| Hairdryer | ✅ Yes (often) | High wattage; many models are not dual voltage |
| Electric toothbrush | ⚠️ Check voltage | Some models are 110V only |
| Camera / DSLR | ❌ No (usually) | Most chargers are dual voltage |
| Power bank | ❌ No | Charges via USB, adapter is enough |
| Electric shaver / trimmer | ⚠️ Check voltage | Older or cheaper models may not support 230V |
| Tablet / iPad | ❌ No | All models are dual voltage |
| Portable fan | ✅ Yes (sometimes) | Many models are not compatible with 230V |
| Game console | ⚠️ Check voltage | Newer consoles like PS5 and Xbox are often dual voltage — check to be sure |
| Bluetooth speaker | ❌ No (usually) | Charges via USB |
| E-reader (Kindle, etc.) | ❌ No | USB charging only, no converter needed |
