On another note, how many people continue turboing through summer? It's the first year I'm considering it, and I feel like its more because I'm rehabilitating my knee that I want to keep going, but I've made noticeable power gains since coming back and power/speed work just seems much easier on the turbo. Never thought I'd be considering it in summer though!
It's got me back to looking at power meters as well, given that the info I get out of TR seems wildly inaccurate at times. Doubt I'll ever get permission for that though.
Last year I didn't in favour of enjoying the outdoors and also my garage turns in to a sauna 25+ degrees as the sunlight beats down on the metal door all day
So unless it was raining or cool enough I was outside. Changes in weather too tend dictated my training days as well as I'd rather be outside though don't find indoor training monotonous at all.
My focus during the last half of 2016 was primary cycling, no longer lifting, and until the recent turn in the weather have been on the turbo 4-5 times a week setting myself up for a strong start to 2017
Ride quality, rather training benefit, will suffer in some regard outdoors due to undulation in grade, change in road surface and other unavoidable hazards interrupting any intervals. But you can mitgate this by not coasting and endeavouring to keep your power output continuous and gauge this by HR zone if you don't have a PM.
I won't be following a plan religiously but will continue to periodise my volume, work on any weak areas and structure outdoors rides & route profiles to replicate an indoor session/workout as much as possible. So climbing/riding at the same power as an interval on the trainer with similar recoveries. Fortunately I have a PM so know this with certainty. I will probably get a few AM sessions in before work during the peak summer months when it's cooler.
If you do train with Power outdoors you'll notice that it can take quite a bit of work to achieve a similar average or notional power outdoors as it does on the turbo.