Lotus has officially confirmed a new partnership with Renault to be supplied with its power unit "for 2014 and beyond".

Renault has supplied Lotus with engines since withdrawing from the sport as a constructor at the end of the 2009 season, but the previous deal ran out at the end of 2013. Lotus has since been trying to negotiate an enhanced partnership after Red Bull and Renault entered in to a "premium technical partnership" ahead of the 2012 season, but no deal had been agreed.

However, a new partnership is now in place which starts with Renault supplying the team with its 2014 power unit, and Lotus CEO Matthew Carter said he hoped it would lead to continued success.

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"Lotus F1 Team and Renault Sport F1 have enjoyed a successful partnership these past few years and we look forward to continue to build on our relationship and collaboration in 2014 and beyond," he said. "It is the beginning of a new era in Formula 1 and we are pleased to embrace it together with Renault Sport F1."

Renault Sport F1 president Jean-Michel Jalinier welcomed the deal and said the engine manufacturer had been working closely with Lotus on its new car for some time.

"We are pleased to see our partnership officially confirmed as the E22 takes to the track for its first official test," Jalinier said. "The relationship between Viry and Enstone has gone from strength to strength over the past few years. This is illustrated in no better way than the excellent - and very close - collaboration on the 2014 car, which is more technically complex than any previous designs. We hope this spirit will pay dividends on track this season and going forward into the new F1 technical era."