Solar to Dominate Global Energy by 2035, Yet AI Data Centers Sustain Fossil Fuel Demand

A groundbreaking report from BloombergNEF projects that solar power is poised to become the world's largest source of electricity within the next decade, surpassing traditional fossil fuels like coal, oil, and natural gas by 2035. This monumental shift is primarily driven by the plummeting costs of solar technology, making it an economically irresistible option. This transition coincides with an unprecedented surge in global energy consumption, fueled by the rapid expansion of artificial intelligence and the widespread electrification of various industries. As Matthias Kimmel, head of energy economics at BloombergNEF, succinctly puts it, "Solar is winning the race." The economic imperative behind solar's ascendance is undeniable. BloombergNEF's analysis indicates that solar's cost-effectiveness alone will drive its dominance, even without more aggressive climate policies. A compelling example is Pakistan, which has rapidly added 25 gigawatts of solar capacity in just two years, a direct response to the spike in natural gas prices following Russia's invasion of Ukraine. Should nations adopt more proactive measures to curb carbon emissions, the transition to solar could accelerate even further, solidifying its position as the cornerstone of future energy grids. However, the burgeoning demand from data centers, particularly those powering AI, presents a complex challenge to a full fossil-fuel phase-out. Investors are increasingly viewing energy, especially for data centers, as a prime growth opportunity. BloombergNEF's data underscores this, forecasting that data centers will necessitate an additional 1 terawatt of utility-scale solar, 400 gigawatts of distributed solar, 370 gigawatts of natural gas, and 110 gigawatts of coal. Crucially, due to the inherent 24/7 operational capability of gas and coal, these fossil fuels are expected to provide 51% of the incremental generation required by data centers through 2050, giving tech companies a significant influence over the future energy mix. While fossil fuels maintain a foothold, other innovative technologies are actively competing for a share of the data center energy market. Long-duration energy storage, geothermal, and nuclear power are emerging as viable alternatives. Google, for instance, has invested $1 billion in 100-hour batteries from Form Energy for a recent data center project, showcasing the potential of advanced storage solutions. Furthermore, the successful IPOs of Fervo Energy (geothermal) and X-energy (nuclear) highlight growing investor confidence in these promising, always-on energy sources. Nevertheless, the relentless decline in solar panel costs, expected to drop another 30% by 2035, ensures stiff competition for these alternatives. The dramatic reduction in solar costs stems from a confluence of factors: China's industrial policy, which has heavily subsidized manufacturers and flooded the market, and the efficiencies gained through mass manufacturing. As Kimmel notes, "costs fall with every doubling of installed capacity," and for solar, this trend has been even faster. This abundance of cheap solar is now catalyzing a similar cost reduction trajectory for grid-scale batteries. In regions like Spain and Italy, a surplus of daytime solar power has made standalone solar farms less profitable, prompting developers to build hybrid plants that pair solar with batteries to capitalize on higher evening prices. BloombergNEF likens the current battery market to where solar was in 2020, predicting nearly a threefold increase in grid-scale battery installations by 2035. Beyond the immediate energy landscape, the report also touches upon broader geopolitical implications. While the Iran War was too late to be fully integrated, BloombergNEF explored scenarios for energy independence. Under an "economic transition" scenario, driven by cost-efficiency rather than strict regulations, every country, including major oil exporters like Saudi Arabia, would reduce its reliance on foreign energy. A more ambitious "net-zero" scenario, driven by regulations, could virtually eliminate dependence on energy imports. Kimmel emphasizes that this "cost-efficient" transition is inherently beneficial for energy independence, aligning economic incentives with strategic autonomy.