AMSTERDAM, Oct 26 (Reuters) - Dutch pension fund ABP will divest 15 billion euros ($17.5 billion) of investments in fossil fuel producers by 2023, it said on Tuesday, citing environmental concerns.

After the planned sale, which represents 3% of the fund's total assets, the fund intends to increase investment in renewable energy where possible, chair Corien Wortmann said in a statement. ($1 = 0.8593 euros) (Reporting by Toby Sterling Editing by David Goodman )