German to English Tech/Engineering Energy / Power Generation Power plant construction project

"Der AN wird bei der Anfrage von Unteraufträgen für Kleingewerke die am Kraftwerksstandort örtlich ansässigen Firmen in den Wettbewerb einbeziehen und im Falle wettbewerbsfähiger Angebote beauftragen."

I'm checking a translation for a power company that is doing a major project. Where 'Gewerk' was mentioned previously, I have - following research on Proz - amended the original translation ('work') to 'project phase' as this seems more appropriate for the context (the construction of a "Duo-Dampferzeugeranlage" as part of the wider project). However, I have now come across 'Kleingewerke'. The translator has chosen 'minor work'. I'm not sure if that would be appropriate in the context and what indeed 'Kleingewerke' would be.

The amended translation, as it currently stands, is as follows:
"When requesting proposals for minor work from subcontractors, the Contractor will involve companies based in the local area of the power plant in the bidding process and will appoint them if their bids are competitive."

I welcome any input.
Thanks