Frydenberg offers olive branch over controversial emissions target

Exclusive: Energy minister says targets can be reviewed in five years if states sign up to energy guarantee

Josh Frydenberg has offered an olive branch on the national energy guarantee, telling state energy ministers the emissions reduction target can be reviewed after five years - stepping back from an ambit claim that it be locked in for a decade.

The concession is flagged in a commonwealth paper circulated to the states late on Tuesday night. It sets out the Turnbull's government's position on how emissions reduction in the Neg will work.