Hi, have a look at
https://www.autodoc.co.uk/car-parts/...%5B0%5D=monroe
I'm not sure if that is the one for your car but Monroe are the manufacturers of Volvo electric shock absorbers so at least it gives you a place to start.
I've just realised it's possible you have nivo's which can be surprisingly expensive. If you have, conversion kits are available( for both sides) which are far cheaper than one nivomat shock.
Cheers
John