國際貨幣基金（International Monetary Fund）執行董事Christine Lagarde表示，「非常欣慰G20聚焦氣候變遷、永續發展目標和低收入國家的困境。」
G20領袖宣言肯定經濟合作發展組織（Organization for Economic Cooperation and Development，OECD）5月的報告「投資氣候，投資成長」（Investing in Climate, Investing in Growth）。這份報告詳述轉型低碳世界所需的結構、財務和政治改變。這是G20中19國會採取的作法，無論川普的態度為何。
他們同意G20漢堡氣候與能源行動成長計畫（G20 Hamburg Climate and Energy Action Plan for Growth）的主張：「永續和乾淨能源創新是G20的首要任務。」
President Donald Trump’s decision to pull the United States out of the Paris Agreement on climate overshadowed this year’s G20 meeting in Hamburg, but did not change the determination of the other 19 members to limit damaging greenhouse gas emissions.
Chancellor Angela Merkel said the G20 nations would not try to conceal the dissent in their ranks. “With a view to the fields of climate and energy, discussed at the G20 summit,” Merkel said, “Where no consensus can be achieved, the Declaration must reflect dissent.”
The leaders of the other 19 members declared that the Paris Agreement is “irreversible,” and reinforced their commitment to help developing countries cope with the changing climate.
“We reiterate the importance of fulfilling the UNFCCC commitment by developed countries in providing means of implementation, including financial resources to assist developing countries with both mitigation and adaptation actions in line with Paris outcomes,” they state in the G20 Leaders Declaration.
While acknowledging disagreement with the United States, the 20 most industrialized nations tried to put a good face on it saying, “The United States of America states it will endeavour to work closely with other countries to help them access and use fossil fuels more cleanly and efficiently and help deploy renewable and other clean energy sources, given the importance of energy access and security in their nationally determined contributions.”
After the first face-to-face working session in which President Trump and Russian President Vladimir Putin both participated, the Russian leader told reporters Saturday, “A very big and very sensitive issue is climate change. I think in this respect the Federal Republic of Germany chairing the G20 has managed to reach the best compromise in a difficult situation the chairing nation has found itself in, namely due to the US quitting the Paris Climate Agreement.”
“An agreement was reached, a compromise, when all the countries have recorded that the United States pulled out of the agreement but they are ready to continue cooperating in certain areas and with certain countries on addressing climate change challenges,” Putin said. “I think this is a positive result in itself, which can be credited to Chancellor Merkel.”
British Prime Minister Theresa May said at the close of the G20 meeting on Saturday, “Like other world leaders here, I am dismayed at the U.S. decision to pull out of the Paris Agreement and I have urged President Trump to re-join it.”
“The UK’s own commitment to the Paris Agreement and tackling global climate change is as strong as ever,” said May.
Christine Lagarde, managing director of the International Monetary Fund, said as the meeting closed, “I strongly welcome the G20’s focus on climate change, the sustainable development goals, and the challenges facing low-income countries.”
The G20 Declaration welcomed the May report from the Organization for Economic Cooperation and Development, OECD, “Investing in Climate, Investing in Growth.”
The report describes the structural, financial and political changes that can enable transition to a low-carbon world. That is the path the other 19 members of the G20 say they will take, regardless of the position of the Trump administration.
They agreed to the G20 Hamburg Climate and Energy Action Plan for Growth, which states,
“Innovation in sustainable and clean energy technologies is a top priority for G20 members.”
The Plan excludes the United States, noting, “The United States is currently in the process of reviewing many of its policies related to climate change and continues to reserve its position on this document and its contents.”
But the other 19 members of the group state their urgency to limit climate change as soon as humanly possible because the dangers are real and increasing.
The G20 leaders declared, “We recognise the opportunities for innovation, sustainable growth, competitiveness, and job creation of increased investment into sustainable energy sources and clean energy technologies and infrastructure.”
“We remain collectively committed to mitigate greenhouse gas emissions through, among others, increased innovation on sustainable and clean energies and energy efficiency, and work towards low greenhouse gas emission energy systems,” they said.
Nevertheless, U.S. President Donald Trump views the G20 meeting as a success for the United States. “The G 20 Summit was a great success for the U.S.,” Trump tweeted at 4am on July 9. “Explained that the U.S. must fix the many bad trade deals it has made. Will get done!”