Energy transfer from accessory pigments to reaction centers. Light energy absorbed by accessory chlorophyll molecules or other pigments can be transferred to reaction centers by resonance energy transfer (yellow arrows), where it drives photoinduced charge separation.
[Source: D. L. Nelson and M. M. Cox, Lehninger Principles of Biochemistry, 5th ed. (W. H. Freeman and Company, 2008), Fig. 19.52.]