Can I specify which fleets can see my site?

Yes, when creating or editing a site, you specify who can see it under Visibility. With Visible to all fleets on Depotcharge, every fleet on Depotcharge, BGL Charge and ASTAG charge will find it, whereas Visible only to fleets with an agreement will show it only to your partners.

Please note that being visible does not mean being usable, as only fleets with an agreement are permitted to charge. You control which fleets charge at what price through your agreement offers, for example with a community tariff for the BGL Charge community.