Here is a list of popular Canadian Energy ETFs:

Title
FHE.TO – First Trust AlphaDEX U.S. Energy Sector Index ETF
HEE.TO – Horizons Enhanced Income Energy ETF Common
HEU.TO – BetaPro S&P/TSX Capped Energy 2x Daily Bull ETF
HED.TO – BetaPro S&P/TSX Capped Energy -2x Daily Bear ETF
HPF.TO – Harvest Energy Leaders Plus Income ETF
NXF.TO – CI First Asset Energy Giants Covered Call ETF Common Units (CAD Hedged)
HXE.TO – Horizons S&P/TSX Capped Energy Index ETF
XEG.TO – iShares S&P/TSX Capped Energy Index ETF