английский => русский Общественные науки Энергетика / Энергопроизводство

Возобновляемые источники энергии.

Regardless of the technology used, different types of integration are possible: centralised and decentralised.
Centralised, where the collector field feeds the district energy system at a sole location.
...
Centralised plants can, in turn, be located on the ground or above roofs or other constructions.
Decentralised or distributed, where the solar collector fields, installed at suitable locations anywhere on the DHC network, are connected to the DHC primary circuit on site.

Не могу понять, где подлежащее в последнем предложении...или пропущено слово "plants"? (т. е. должно быть "Decentralised or distributed plants")

Спасибо