Forester (pictured) was focused on the same asset classes at Foresight, where she was a senior manager in the institutional capital team.
She has previously worked at Barclays Capital and Quest Fund Placement, where she raised capital for European private equity clients in the mid-market buyout and distressed debt space.
At Impax, which now has £14.5bn assets under management, she will report to Meg Brown, managing director for marketing and business development.
In a press release, Brown said Forester’s experience would aid Impax’s capabilities in the renewable energy infrastructure space.
“With the European economy seeing an acceleration in the transition of the power sector to lower carbon technologies, the long term investment opportunity in renewable energy infrastructure is becoming increasingly attractive,” she said.
Pension mandates and St James’s Place have aided Impax flows this year.
In its quarterly results for the period to the end of June, the California State Teachers’ Retirement System (Calstrs) was estimated to have contributed $200m to flows.
In July 2018, SJP announced it was dumping Aberdeen Standard Investments on its Ethical fund and replacing the funds giant with Impax.