根据世界银行和一个独立的离网太阳能组织的一项研究，未来四年需要约114亿美元的投资，才能让数亿人接入可靠的离网太阳能电力。
An investment of about $11.4 billion is required over the coming four years to connect hundreds of millions of people to reliable off-grid solar electricity, according to study done by the World Bank and an independent off-grid solar organization.
世界银行能源部门管理援助计划和全球离网太阳能协会（GOGLA）指出，虽然太阳能现在占全球新增电力装机容量的最大份额，但离网产品对许多人来说仍然负担不起。
And while solar now makes up the largest share of new power capacity added worldwide, off-grid products remain unaffordable for many, according to the World Bank’s Energy Sector Management Assistance Program and the Global Off-Grid Solar Association, or GOGLA.
报告称：“离网太阳能仍然是至少3.98亿无电人口的最低成本解决方案，也是电网的有力补充，往往服务于电网无法覆盖的社区。”
“Off-grid solar remains the least-cost solution for at least 398 million people without access to electricity and a strong complement to the grid, often serving communities beyond its reach,” it said.
根据最新的《离网太阳能市场趋势报告》，预计投资包括每年约13亿美元的赠款和补贴，以及每年另外16亿美元的股权、债务和应收账款融资。
The estimated investment includes about $1.3 billion annually in grants and subsidies, and another $1.6 billion in equity, debt and receivables financing each year, according to the latest Off-Grid Solar Market Trends Report.
报告称，总体而言，到2030年每年平均需要3万亿至5万亿美元的能源转型投资。
Overall, there’s need for $3 trillion to $5 trillion in average annual energy transition investment needed by 2030, it said.
报告显示，截至2025年的两年间，使用离网太阳能产品的人数增长了26%，达到1.49亿人。在过去15年里，离网太阳能产品为客户创造了约280亿美元的额外收入和节省。
The number of people using off-grid solar products rose 26% to 149 million in the two years to 2025, according to the report. And over the past 15 years, off-grid solar products have generated about $28 billion in additional income and savings for customers.
在撒哈拉以南非洲，2025年太阳能家庭系统销售中有47%集中在肯尼亚、尼日利亚和赞比亚，而西非和中非大部分其他地区的销售增长甚微。约三分之一的无电家庭能够负担得起按使用付费模式的入门级太阳能家庭系统，支出最高可达家庭消费支出的5%，而另外三分之一则勉强能够负担，支出高达10%。
In sub-Saharan Africa, 47% of solar home system sales in 2025 were in Kenya, Nigeria and Zambia, while sales in most of the rest of West and Central Africa showed little growth. About a third of homes without power can afford an entry-level solar home system on a pay-as-you-go basis, spending up to 5% of household consumption expenditure, while another third could afford it at a stretch, spending as much as 10%.
“离网太阳能已证明，它能够在电网未覆盖的地区大规模供电，”全球离网太阳能照明协会（GOGLA）执行总监莎拉·马尔姆（Sarah Malm）表示。“除非政府、投资者和发展合作伙伴将其视为已然成为的基础设施来对待，否则数亿人等待用电的时间将比应有的更长。”
“Off-grid solar has proven it can deliver at scale” in places the grid has not reached, GOGLA Executive Director Sarah Malm said. “Until governments, investors and development partners treat it as the infrastructure it has become, hundreds of millions of people will wait longer than they should for power.”