I've gotten some correspondence about OTC financially cleared energy products supported by TT and a request for some pointers.
Actually, the first thing you need to do is to find out what OTC financially-cleared contracts your particular FCM supports with ICE and Nymex, and of course there is the issue of margin capital required for you or the firm you are trading for. From there, start the list and then pare it down. You can run some correlation analyses and you can also look at the exchange-published SPAN margin credits for OTC financially-cleared intramarket spreads. Personally, I would consult the exchange SPAN spread margins first, because by design those spreads and the ratios are highly correlated and well modeled. Also, by following the exchange SPAN guidance you will get the margin credit because in all likelihood you will be carrying positions overnight due to liquidity gaps. If you have some unique sort of spread there is the distinct likelihood that the exchange(s) will margin you for two ( or more ) outright positions. Also, while there are some cross-exchange margining credit agreements in place, this is not universally true. You will want to consult the exchange product manager about that.
TT will enable any product key you desire provided that your FCM and your firm's risk manager and in the case of OTC products the exchange approves of it in advance. And that always comes down to money and what kind of capital you or your firm wants to commit to the trade. And the OTC financially cleared products usually have very chunky capital requirements as compared to the well known futures names. Additionally, for OTC contracts the exchange product manager will likely have to approve you and your firm as well.
My BIG word of warning: you MUST execute the most illiquid contract FIRST - both getting into and getting out of the trade. Deviate from my advice with this particular detail and you will get sodomized.
In terms of quality third party intraday OTC data to model, Bloomberg T&S is absolutely hands-down the best but CQG is doable. I personally haven't traded this stuff for a few years, but as I recall when I had my TT screens up for OTC energy I also had a WebICE screen and the Bloomberg energy pages up. I also had a brokerage relationship with ICAP and Amerex, and had a voice line and IM's up so I could also trade through them depending on what they were showing but maybe more importantly I could follow along with what they were shopping around. Most other data providers are sketchy in terms of intraday OTC data. Please be advised that there will be voice or IM brokered trades in OTC financially cleared products that will have latency built into the price prints because the reporting requirements by the brokers are not immediate for practicality purposes. In other words, for example PJM-W monthly power forwards trade on TT but what you don't see on TT in a real-time sense are the PJM-W monthly forwards being brokered away from the screen by ICAP, TFS, Amerex, etc. etc.. It is what it is.