| 1985 - | Enerplus Global Energy Management (EGEM) is created to launch first royalty trust in Canada |
| 1986 - | Enerplus Resources Fund completes a $9 million IPO and begins operating as Canada's first oil and gas royalty trust |
| 1987 - | Enerplus Resources Fund initiates Series B and completes a $50 million IPO |
| 1988 - | Enerplus Resources Fund completes another successful IPO with Series C raising $75 million |
| 1989 - | Enerplus Resources Fund launches Series D raising $26 million |
| 1990 - | Enerplus Resource Fund completes $17 million rights issue |
| 1993 - | Enerplus mergers Series A, B, C, and D into one fund, Series G and changes to open ended fund |
| 1994 - | EGEM acquires contracts to manage two additional trusts Westrock Energy Income Funds I & II |
| 1995 - | Enerplus and Westrock Funds acquire $68 million in assets |
| 1996 - | EGEM converts Mark Resources, a $500 million energy company, into EnerMark Income Fund; $180 million raised through equity financings |
| 1997 - | EnerMark acquires Quest Oil & Gas and concludes a $100 million equity finanacing |
| 1999 - | The Enerplus Group raises $51 million through rights issues; purchases Derrick Energy and concludes $27 million finanacing |
| 2000 - | The Enerplus Group acquires over $850 million in assets; El Paso Energy acquires EGEM; Enerplus Resources Fund merges with the Westrock Funds and becomes the first Canadian royalty trust to trade on the New York Stock Exchange |
| 2001 - | Enerplus Resources Fund and EnerMark Income Fund Merge to create the largest conventional oil and gas income fund in North America with an enterprise value of over $2 billion |