The fight against climate change can be turned into a global mission for new jobs and clean growth according to the speaker.
The prime minister will say that it's important that nations stick to their commitments.
Mr Sunak is going to give funding to boost jobs and clean energy.
He is in Egypt with other world leaders
Mr Sunak, who became prime minister last month, is in Sharm el-Sheikh for the first time.
After initially declining the invite, the PM faced backlash as he said he was too busy preparing the budget.
The topic of migrants crossing the English Channel in small boats will likely be raised by Mr Sunak at the summit.
The importance of ending dependence on fossil fuels was reinforced by Russia's invasion of Ukraine, according to Mr Sunak.
He will say that the move can boost green industries.
He wants leaders to limit global warming to 1.5C above pre-industrial levels to avoid the worst effects of climate change.
The world came together in Glasgow to try and come up with a plan to limit global temperature rises to 1.5C. Can we summon the collective will to fulfill those promises?
Our children can inherit a more prosperous future.
The 1.5C target is "barely within reach" according to the Secretary General of the World Meteorological Organisation.
Since 1993, the rate at which sea levels are rising has doubled, according to a report by the UN's weather and climate body.
The report was described by the UN Secretary General as a "chronicle of climate chaos" and urged governments to answer the planet's stress signal with "ambitious, credible climate action".
The clean energy innovation facility, which provides grants to researchers and scientists in developing countries working on clean technologies, will be announced by Mr Sunak at a later date.
The UK will support indigenous and local communities with over sixty million dollars in funding.
The UN warns that there is currently no credible pathway to meet the 1.5C goal intended to avoid the worst impact of global warming.
According to the UN's climate scientists, global temperatures have risen 1.1C and are on their way to 1.5C.
Half the word's population could be exposed to life threatening heat and humidity if temperatures rise 1.7 to 1.8C above 1850s levels, according to the Intergovernmental Panel on Climate Change.
The UN warned that rich countries are falling short in providing the finance needed to help developing nations adapt to a changing climate.
Mr Sunak had to be dragged kicking and screaming to go to the summit in order to be able to lead on climate change.
"Rishi Sunak is the man who had to be dragged kicking and screaming to go toCOP, so it's implausible for him to claim the mantle of climate leadership," said the shadow climate change secretary.
Hiro Sunak is a fossil fuel prime minister.
The Labour Party has pledged to boost green industries and invest in net zero jobs in the region.
The plans are part of Labour's commitment to end the use of fossil fuels in the UK by 2030.