San Juan power plugs and voltage
Check your plugs before you fly
San Juan uses Type A and Type B sockets at 120 V / 60 Hz. Pick the country you are travelling from to see exactly what you need.
- Plug types
- A / B Same as the rest of Puerto Rico
- Voltage
- 120 V Low-voltage grid
- Frequency
- 60 Hz 60 Hz
- Standard
- NEMA 1-15, NEMA 5-15 Puerto Rico
What to expect in San Juan
San Juan uses Type A and B sockets at 120 V / 60 Hz, the US standard. American plugs fit; European and British ones need an adapter.
Power in Puerto Rico comes mainly from oil, natural gas, renewables. Grid reliability is described as moderate.
Good to know: US standard — A/B sockets at 120 V / 60 Hz.
What to pack for San Juan
- A travel adapter with Type A and Type B on the socket side.
- A step-up transformer only if you are bringing 230 V appliances from Europe or Asia.
- A device label check: anything marked 100–240 V needs the adapter, nothing else.
The sockets
Puerto Rico in full
Voltage, frequency, socket standard and travel notes for the whole country.
Adapter checker
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