It is the energy provider's fourth increase this year
PrepayPower has announced that it is to increase its price for electricity by 9.9%, from 1 December.
It is the energy provider's fourth increase this year and will impact around 170,000 electricity customers.
The company said the changes will increase the average weekly cost for electricity for a typical customer by €3.89, or €200 a year.
However, there will be no change to the company's gas prices at this time, and the company said that no further increases in gas or electricity unit costs are expected this winter.
The increase will be applied to the unit rate of electricity and there is no change to the standing charges.
The company had previously increased prices already this month, with electricity prices having risen by 19% and gas prices rising by 29%.
Darragh Cassidy, from price comparison website, Bonkers dot ie, says it's a big blow to households:

80 Drug-Driving Cases Before Naas Court So Far This Year Amid Calls For Tougher Penalties
Electricity Bills To Increase Next Year As Households To Shoulder Majority Of Power Grid Overhaul
Bus Éireann Confirms January Expressway Fare Increase, Cites Insurance And Fuel Costs
NTA Plans 24-Hour Bus Linking Newbridge, Naas And Dublin City Centre
Visiting Only Allowed For Critical Or Compassionate Reasons At Naas Hospital Amid Surge In Flu Cases
Turn2Me Reminds Locals Feeling Down Over Christmas Period To Avail Of Supports Available
Four Naas Car Parks Go Free For Christmas - But Illegal Parking Still Enforced, Says Council
Up to €400,000 Spent, Answers Yet To Be Published: Fianna Fáil TDs Demand Aras Bid Campaign Review