In Turkmenistan the standard voltage is 220 V. The standard frequency is 50 Hz. The power sockets that are used are of type C / F. Your need for an adapter depends on the voltage, frequency and power plugs in the country you live in.
Voltage and frequency
You can use your appliances in Turkmenistan, if the standard voltage in your country is in between 220V - 240V (as in the UK, Europe, Australia and most of Asia and Africa). If the standard voltage in your country is in the range of 100V - 127V (as in the US, Canada and most South American countries), you need a power converter. To be sure, check the label on the appliance. If it states 'INPUT: 100-240V, 50/60 Hz', it can be used in all countries of the world (like chargers for tablets/laptops, photo cameras, cell phones, toothbrushes).
If the frequency in Turkmenistan (50 Hz) differs from the one in your country, it is not advised to use your appliances. But at your own risk, you can try. Be extra careful with moving, rotating and time related appliances like clocks and electric fan heaters.
Power sockets and plugs
In Turkmenistan the power sockets used are of type C / F:
Your need for a power plug adapter depends also on the country you live in. Check this map to see the use of different plugs and sockets in the world.
Presence and absence of electricity
Electricity is available in the vast majority of populated areas of Turkmenistan, with the exception of small desert settlements far away from the main roads, such as Damla, Akmolla, Murzachirla, Melegoch and Balishem) and most historical sites. Power supply is also not available at Darwaza and inside the Yangikala Canyons.
In hotels, motels, guesthouses and pilgrim guesthouses, electricity is available, but at camp locations there is no power supply.
It is advisable to bring extra camera batteries, especially if your journey in Turkmenistan includes desert safaris and at least 2 consecutive nights of camp accommodation.