ᐅ Eave height for photovoltaic system quotation

Hello,

we are currently requesting quotes for photovoltaic systems on our hip roof.
For this, we need to provide the eaves height and ridge height.

I checked our plans and got a bit confused.
I always thought the eaves height is the "drip edge," meaning where the gutter is attached.
Why is the eaves height marked so high on the plans?
In the final plans (which I don’t have at hand right now), it was indicated as 6.09 m (20 ft) and the roof ridge as 7.99 m (26 ft), so it can’t just be a one-time typo.
The top edge of the floor slab is at about 5.68 m (19 ft). The gutter was drawn at the same height on the final plans. This would mean the eaves height is 40 cm (16 in) higher than the gutter, making the roof surface significantly shorter. This would mean that on our already somewhat unsuitable hip roof, especially at the widest parts of the triangular or trapezoidal panels, we would lose a considerable amount of roof area.
Is that correct?

Best regards,
Musketier