Five nations have endorsed the Global Rooftop Solar Declaration, a voluntary plan to double the number of homes equipped with rooftop solar panels worldwide by 2030. The initiative, launched on the second day of the U.N. climate talks (COP31) in Antalya, Turkey, seeks to increase the global count of solar-powered households from approximately 150 million to at least 300 million. Bangladesh, Kenya, Nigeria, Vanuatu, and Australia are the primary national endorsers, joined by lawmakers from 21 other countries, including the United Kingdom and South Africa, and Indonesia’s state-owned electric power company, Perusahaan Listrik Negara.
What the Left Is Saying
Progressive advocates and renewable energy leaders frame the declaration as a critical step toward energy affordability and climate justice. Sonia Dunlop, CEO of the Global Solar Council, described the initiative as "the future of affordable energy," arguing that it allows average working people to "insure themselves from future price rises to come." Dunlop noted that the world is facing "the greatest energy cost of living crisis" ever seen, positioning rooftop solar as a direct solution to help families struggling with utility bills.
Supporters emphasize the decentralized nature of rooftop solar, which generates and stores electricity near the point of consumption. This model is viewed as particularly beneficial for remote communities, refugee camps, and disaster zones that are often underserved by traditional grid infrastructure. Bruce Douglas, CEO of the Global Renewables Alliance, argued that combining electrification with renewables creates a "killer combination" due to efficiency gains, stating that the pledge must be followed by national policies to upgrade power grids and subsidize panels and batteries to actually reduce emissions.
What the Right Is Saying
Conservative voices and fossil fuel industry representatives express caution regarding the feasibility of the targets and the stability of the grid. Michelle Manook of FutureCoal, an industry-backed group formerly known as the World Coal Association, warned that setting "ambitious renewable targets without addressing grid capacity, storage and the continued role of coal risks undermining energy security, reliability and affordability." This perspective highlights the tension between rapid renewable adoption and the existing infrastructure’s limitations.
Critics also point to the voluntary, non-binding nature of the declaration, noting that past U.N. climate promises have often fallen short. The focus on immediate energy security is underscored by recent global conflicts, including the Russia-Ukraine war and the Iran war, which have disrupted energy supplies and increased interest in all forms of energy generation, not just renewables. Skeptics argue that without concrete frameworks for funding subsidies and training qualified installers, the pledge remains symbolic. Sheryl Estella of New Energy Nexus noted that national policies must swiftly follow to address these logistical hurdles.
What the Numbers Show
The declaration aims to double the number of homes with rooftop solar panels from about 150 million to at least 300 million by 2030. Currently, one in three homes in Australia has rooftop solar, and more than 700,000 Australian homes have batteries to store excess energy. Despite this, coal still accounts for more than 40% of electricity generation in Australia, which remains one of the world's largest coal exporters.
In Turkey, solar and wind make up nearly 23% of energy generation, but coal remains the largest source of electricity, accounting for 33% of generation last year, according to Turkey's Ministry of Energy and Natural Resources. Globally, renewables generated more than a third of the world's electricity last year, overtaking coal for the first time, largely driven by solar installations in China and India. Turkey is also pushing for electricity from renewables to make up 35% of global energy consumption by 2035. Indonesia has pledged to install 100 gigawatts of solar power by 2029, and the Philippines became the second-largest destination for Chinese solar exports in the first quarter of 2026.
The Bottom Line
The Global Rooftop Solar Declaration represents a significant diplomatic push for decentralized energy, but its impact depends on national implementation. Experts note that energy storage deployment must catch up with the speed of renewables deployment to avoid "massive operational challenges for the grid," such as curtailment, where electricity output is limited because the grid cannot handle it. Nikit Abhyankar of the University of California, Berkeley, emphasized that insufficient transmission and storage capacity remain major hurdles in populous nations like China and India.
COP31 marks a shift toward focusing on electricity access and affordability rather than solely on emissions targets. However, the voluntary nature of the agreement means that binding commitments and specific funding mechanisms are still lacking. The coming months will reveal whether the participating nations can translate this pledge into the necessary grid upgrades, subsidies, and workforce training required to double rooftop solar adoption within four years.