Renault managing director Cyril Abiteboul does not expect to see ERS issues hinder the team at the Australian Grand Prix this weekend.
Jolyon Palmer and Nico Hulkenberg both saw their track time at Winter Testing limited because of the problem, but Abiteboul believes a fix is now in place.
"We have addressed the ERS issue which caused us reliability concerns and do not expect to see a repeat of it in Australia," said Abiteboul.
"There is a balance between pushing the envelope of performance and maintaining the requisite reliability and the trick is to stretch the margins without overstepping them.
"We know we have a strong base with the R.S.17 which puts us in good stead for the relentless development race we expect to see.
"We are confident in the abilities of the team to improve and develop the car over the year."
Abiteboul also revealed that Renault are aiming for a fifth-place finish in the Constuctors' Championship this year.
"Our own target for Albert Park is the same target we will have for every race this year: points," he added.
"We want to score points throughout the year so when the final tally comes we have finished fifth in the Constructors' Championship.
"It will be a long battle, but we know what we need to do."