PHS capacity

[pypsa]

PHS capacity

[FabianHofmann]

thanks @martavp, I'll retag them as reservoirs then.

[ebbekyhl]

Duration is defined here

powerplantmatching/powerplantmatching/data.py

Line 420 in ae06ab5

.eval("Duration = StorageCapacity_MWh / Capacity")

But this issue mentions that the 'StorageCapacity_MWh' attribute might not be very accurate: energy-modelling-toolkit/hydro-power-database#1 (comment)

Furthermore, the 'Villarino Almendra' (id 487) might be the main source of error, with a power capacity of 851 MW and a duration of 3666 hours.

[FabianHofmann]

@ebbekyhl there was a bug in the aggregation of duration values (missing values distorted the weighted average computation). With the newest version of ppm, the capacities are at 9.05 TWh again. Where the missing 1 TWh comes from I cannot say atm... If this solves the initial issue, feel free to close it.

[ebbekyhl]

Thanks for checking up on this, @fneum. I will close this issue. My initial remark concerned whether 4 (or now 9) TWh was a realistic estimate of current PHS capacity. But this might more relate to the hydro-power-database by the JRC - and thus not a bug in powerplantmatching.

[FabianHofmann]

Sorry for not reading the initial issue properly again. You are right, this seems to be an issue with JRC, for example the largest storage reservoir are

	Name	Country	StorageCapacity_MWh
2643	Svartisen	Norway	4.86983e+06
2385	Saurdal	Norway	3.19291e+06
2905	Villarino Vllrino Almendra Villarino Spain	Spain	3.12e+06
2186	Rana	Norway	2.4474e+06
1339	Kobbelv	Norway	2.12101e+06

which seem to be too high I'd say.

[martavp]

Hi,

The Villarino is one of the hybrid (PHS + reservoir) hydro plants in Spain.
It is mostly used as a reservoir plant (i.e. it shows a seasonal pattern) as shown in the next image
(It has two official names 'Villarino' and 'Almendra')
https://www.embalses.net/pantano-71-almendra.html
I would suggest not considering it a PHS plant since its energy capacity (3TWh) is two orders of magnitude larger than the estimated energy capacity for PHS in Spain (around 72 GWh). I suggest a conservative approach in which those 5 plants are not assumed to be PHS so that we avoid giving extra energy for free to the system