I think itâs a bit different, just I donât have exact formula for how regular hero power is calculated.

But, if formula is Power (hero) = Formula (attack, def, health)
Then Iâd assume team power is sum of new hero powers done like this:

Power (hero+troop) = Formula (attack * (1 + troop attack %), def * (1 + troop attack %), health * (1 + troop health %))

So you basically put influence of troop instead of regular hero attack, def or health

For example if normal formula for hero is something like attack / 2 + def / 2 + health / 10 (wild example)

Then for hero + troop where each troop ads 5% for each stuff it will be 1.05 * attack /2 + 1.05 * def/2 + 1.05 * health/10
and then youâd sum those values to get the team power

And thatâs why itâs bigger than just summing hero powers.
BTW, we donât have troop power, we just have value per each - attack, def, health, thatâs why I think we need to recalculate âhow much is hero powerful when combined with this troopâ

Edit: I just saw the formula for power probably also takes specials into the consideration, stars and whatnot. And no one knows it for now

edit2: you can test at least part of it - edit one of your teams, and delete all but one hero - compare hero power with âteam powerâ of that one hero and troop assigned to it
That will give you some feeling at least

I have one very approximate formula, that just uses att, def and hp

So, 0.5 * att + 0.5 * def + 0.02 * hp

Values are off, however, just for the illustration:

Both heroes have skill 1/8

Sonya 1.1, 286 / 344 / 476, by formula itâs 324, real is 330
with troop +13% / +17% / +4%, by formula is 372, real is 373
with troop +15% / +9% / +6%, by formula is 362, real is 365

Little John 1.1, 349 / 268 / 465, by formula itâs 317, real is 329
with troop +13% / +17% / +4%, by formula is 363, real is 372
with troop +15% / +9% / +6%, by formula is 356, real is 364

So this just proves that formula isnât simple linear stuff, but something more complex that I donât have an idea how to break currently.

Team Power of an individual hero seems to track/include a weighted average of attack, defense, and health, with health being worth a bit less than the other two.

At least for a 3* hero, each 1/8 of special is worth 5 points of team power. I watched my maxed Bane go from 5/8 to 8/8, and each time it went up, he gained 5 points.

It is also clear that a 5* is worth more TP than a 4* which is worth more TP than a 3* even if they have the same attack/defense/health and special fraction stats.

I havenât tried to check if each ascension rank is worth an extra bump in TP. beyond what is due for the stats increase / skill increase.

@JonahTheBard, I really donât know, but my GUESS is that the relative usefulness / uselessness of a special skill is not included in any way.

When I was curious about it, I did a bit of nominal fitting in a spreadsheet, and came up withâŚ
TP ~= att/3 + def/3 + hp/6 + special*5

If I had proper curve fitting tools, more data, and cared to spend the time, I could do better.

I didnât include hero stars in which I am certain plays into it (and messes up by making unmaxed 5* heroes appear much stronger than they are in practice!)

I also didnât try to figure out if ascension tier contributes besides the associated stat increases.

As far as I can see team power is simply a sum of all heros and troops.

With one hero in my team and a 1* troop I have a team power of hero power + 11. With two heroâs and two 1* troops I have a team power of heroâs power + 22.

With only Colen on team. Colen power is 556 (not fully leveled). Team power with a 1* troop is 567.
With only Natalya on team. Natalya power 777. Team power is 788 with a 1 * troop.
With 3 heroes that have a sum power of 1843 and with 3 1* troops I get team power 1876.

In all 3 examples it fits with a 1* troop having a power of 11.

@RedPython thanks for digging that out. It was quite a while ago, but Iâm guessing that plugging newer heroes into that data set isnât going to change much.

Interesting to see how much the stars are âworthâ (a lot, apparently too much) and also how much being a HotM or event hero is worth. (a minor bump)