Too bad the forum search doesn't work better but this has been discussed a few times in the past so perhaps using the 'Google' option and search for real time pricing and ComEd --- I myself went for a fixed rate of 6.6 cents/month for 18 months with Champion Energy over ComEd and so far it still beats any of the other 3rd party power resellers that continue to send me mailings about how low they are. Unless you are already a heavy power user I don't believe the 'real time' pricing is really going to be worth it but do your research and then make a decision based on your own electricity usage --- I expect only a marginal increase with charging the LEAF and that will be offset by the lower rate I'm getting now.
2018 smart ED Brabus (leased)
Sapphire Blue Metallic
2017 Tesla Model 3 LR RWD; FSD; 19" sport wheels
2015 VW e-Golf LE (traded-in for Model 3)
2012 Nissan LEAF SL (traded-in at 5 yrs; 46K miles)
EVSE: 10/07/11 Schneider EVlink