Before revision:  Treating carotenoid molecules as transmitters and chlorophylls as receivers, a throughput of about 1 Gbit/s is achievable with  bit error rate below 10-3 , average transmission delays about 20 ps, and energy consumption c.a. 2.0x10^-18 J per bit.
After revision:  Treating carotenoid molecules as transmitters and chlorophylls as receivers, and the energy transfer between them as a way to encode information, a throughput up to 1 Gbit/s is achievable with bit error rate below 10-3 , average transmission delays about 20 ps, and energy consumption c.a. 2.0x10^-18 J per bit.