The phrase "a substantial network of" is correct and usable in written English.
It can be used when describing a significant or considerable system of interconnected people, organizations, or resources.
Example: "The organization has developed a substantial network of partners across various industries to enhance collaboration and innovation."
Alternatives: "a significant network of" or "an extensive network of".
The new and old city has a substantial network of bike lanes and is relatively flat.
She built up a substantial network of international contributors and could find a warm welcome in any major city in the world.
In addition to its investment bank based in London, with a large presence on Wall Street, Deutsche Bank has a substantial network of retail banking branches in Germany.
But, to his credit, he managed to build a different career by touring Italy and playing in theatre after theatre, sports arena after sports arena, building up a substantial network of popular support independent of television.
We must build a substantial network of nongovernmental organizations that have demonstrated success both in the United States and abroad with small, customized, bottom-up efforts that have learned to unlock doors that governments aren't able or willing to enter.
Jack Nerad, executive market analyst at Kelley Blue Book, said in an interview that creating a substantial network of them will "require a pretty significant investment in infrastructure," adding, "We have a huge network of gas stations in the United States that's hard to compete with, but even strategically locating the swap stations where they'll do the most good is a daunting task".
That same agreement was also honoured by the defendants that were acquitted and the substantial network of friends that made up the Stoke Newington Eight defence committee.
The movement of this offshore money is an industry made possible in part by the secrecy on sale in tax havens, led by the UK's substantial network of offshore enclaves.
If YouTube leveraged copyrighted video for early audience building and video capturing plug-in VideoEgg is aimed to offer ads on its now substantial network of social network partners – in these kinds of partnerships Grouper clearly has a powerful distribution channel of its own.
