"demonstrating impact" is a correct phrase and can be used in written English.
It refers to showing or proving the effect or influence of something. Example: The study used various methods to demonstrate the impact of climate change on local ecosystems.
The issue of demonstrating impact was another cause for concern among panellists.
Although there is a long way to go in impact measurement and its demonstration, we continue to work with both charities, supporting them to better communicate their transformational work, and with donors to encourage them to play a significant role in demonstrating impact too.
Access to solutions in agriculture are demonstrating impact on operations, leading to direct impact on household incomes.
These programmes also do not explicitly link their specific activities to their intended outcomes, making demonstrating impact impossible.
PIs saw nurturing research staff as more important than research integrity, generating income, demonstrating impact, and continuing their own professional development.
Acknowledgments - formal statements of indebtedness – in graduate theses and dissertations provide a rather unexplored area for demonstrating impact of the academic library on student learning.
The public has become more impatient for results, demanding more efficient uses of resources to combat intractable social and environmental problems and clear evidence demonstrating impacts achieved.
By demonstrating impacts on children, mothers and families, IRC research has provided evidence and analytical support to UNICEF and its partners in advocating for improved public policies.
The clearest way to demonstrate impact is by translating data into something donors want to read and listen to.
A charity that is failing to demonstrate impact may find it difficult to source funding, for example.
More than ever, those donors expect the groups to demonstrate impact before they write checks.
