A total capacity of 62.5MW was added to the National Grid last month by Greencells GmbH through completion of five of its PV solar projects.
The completed installations of the solar parks follows the granting of planning permission at the end of last year.
The company employed more than 500 engineers to complete the projects, which are eligible for Renewable Obligation Certificaion (ROC) funding.
The German-owned company has now installed more than 200MW of solar PV across the UK.
Following its increasing workload, Greencells has also announced the construction of a new facility near Bristol.
It now accounts for nearly 10% of all ROC-funded PV installations.