Calories in a baked potato?

[hugoagogo]

I am confused how a baked potato with it's skin is 136 cals per 100g and without the skin is only 77 cals per 100g (from my collins gem calorie counter)?

What am I missing? I like the skin on a baked potato, but cannot see how it can be so much more calorific that the rest?

Sounds like a big difference, but there will be much more water in the potato flesh, which will have 0 calories.
In the skin, there is much less water, so more potato calories, iyswim?
So 100 potato is, say 60g potato, and 40 water,
But potato skin is 80g potato, and 20g water?

I have been googling (I am that bored) and discovered that all the recipes I have found for baked potatoes tell you to rub oil or butter on them before cooking, so that may be the answer.

I don't do this, so I am going to assume the lower count for my spuds.

MFP lists jacket potato as 100 cals per 100g so I'd go for that personally!