The phrase "widespread deployment" means that something is being widely and extensively used or implemented in many different places or situations. Full definition
That would require widespread deployment of expensive «air capture» technology that actively removes CO2 from the atmosphere. (scientificamerican.com)
Political and financial support for CCS, alongside policy parity with other low emission technologies, will help to encourage widespread deployment. (worldcoal.org)
No one expects wind and solar to entirely replace coal and gas generation without widespread deployment of energy storage, as well as means to manage and shift electric demand. (pv-magazine-usa.com)