Justin Slaughter
The new co-COO said the firm has tackled larger debt and equity deals in Asia.
Daniel Garant left the Canadian pension plan, which has 8% of its assets in infrastructure, to pursue other career aspirations.
The debt vehicle is one of 38 private funds at the Canadian firm.
The Canadian pension grew its infrastructure holdings to $8.3bn, or 8.2% of its total assets, over the year to end March.
NMERB has previously committed a total of $90m to Stonepeak funds.
The Australian firm is currently raising MIP IV, which it launched last year with a reported target of $4bn to 5bn.
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The Philadelphia-based firm already manages $5bn of energy-related assets.
Dan Rudgers will join the global placement agent focused on private funds to manage its US and Canadian business.
The US firm has raised twice as much for the two-year old vehicle as it did for its predecessor, launched in 2010.