Compare the plug shapes, voltage and frequency in Saint Kitts and Nevis and Solomon Islands, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Saint Kitts and Nevis, you will need a travel adapter for Solomon Islands. Saint Kitts and Nevis uses Type A/Type B/Type G plugs, and Solomon Islands uses Type I, so the pin shapes will not fit any wall socket. The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Saint Kitts and Nevis (home)
Solomon Islands (destination)
Electrical specifications in Solomon Islands
More about plugs in Solomon Islands
In Solomon Islands, the standard power plug is Type I. The country runs on 230 volts at 50 Hz. That means every wall socket in Solomon Islands is the same shape — Type I, and your plug needs to physically match the socket to fit.
Full Solomon Islands plug guide