气候专家和能源领导者联合发表公开信，呼吁到2030年为全球提供太阳能电力。1公开信签署者包括作家比尔·麦基本、前联合国气候秘书克里斯蒂亚娜·菲格雷斯和加拿大前环境气候变化部长凯瑟琳·麦肯娜。1这一倡议的目标是为近10亿缺电人口和依赖化石燃料的数十亿人提供清洁、廉价的电力。1
全球太阳能产业正加速发展。2025年全球太阳能增长达到30%，创下8年来最高增速，自2015年以来增长超过10倍。12025年可再生能源首次在全球电力结构中超越煤炭，这是100年来首次。1然而，现实与目标仍存在巨大差距——全球目前安装太阳能容量为3TW，每年新增约1TW，但要实现全球能源转型需要达到50TW。1
实现2030年目标面临多重挑战。全球约6.55亿人仍无电力供应，撒哈拉以南非洲的电气化速度需增加三倍才能在2030年前实现普遍用电。1专家认为这一目标雄心勃勃但可行，但需要政治意愿和国际融资支持。1德国可能在2至3年内完成能源转型（若有政治意愿），但全球范围可能需到2040年才能实现80至90%的可再生能源目标。1
Climate experts and energy leaders have issued an open letter calling for worldwide solar power expansion to reach approximately one billion people currently without electricity access, as well as billions more dependent on fossil fuels.1 The signatories include author Bill McKibben, former United Nations climate chief Christiana Figueres, and former Canadian Environment and Climate Change Minister Catherine McKenna.1
The initiative aims to deliver clean, affordable electricity globally, though it faces significant scaling challenges. Current global solar capacity stands at 3 terawatts, with annual additions of approximately 1 terawatt, while achieving a complete global energy transition would require 50 terawatts of installed capacity.1 Despite this ambitious gap, experts regard the target as achievable with sufficient political commitment and international financing support.1 Global solar energy grew by 30 percent in 2025, marking the highest annual growth rate in eight years and representing more than tenfold expansion since 2015.1
Progress on renewable energy is accelerating on a broader front. Renewable energy sources surpassed coal for the first time in 2025's global electricity mix, a milestone not seen in a century.1 However, substantial regional disparities remain: roughly 655 million people still lack electricity access, and sub-Saharan Africa must triple its current electrification pace to achieve universal electricity by 2030.1 While Germany could potentially complete its energy transition within two to three years if political will materializes, reaching 80 to 90 percent renewable energy globally may not occur until 2040.1
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