In 2012, a power company developed two high-head power stations in Hawkes Bay, named The Esk Project after the Esk Valley near the site. Maskell supplied the two penstocks in FRP/GRP Flowtite pipe for both the Rimu and Toronui stages of the project.

This is the third hydropower scheme in New Zealand to utilise fibreglass pipe for the penstocks.
Maskell was selected for this aspect of the project, as both Maskell and Flowtite have proven experience in the supply of fibreglass pipe for penstocks projects.