07 · The Matter Stack物质的层级

Solar Energy太阳能

Level · Photon层级 · 光子

"The sun delivers in one hour what civilization burns in one year.""太阳一小时给地球的能量，等于文明一年烧掉的全部。"

Plane位面

Energy能量

Value价值观

Bringer of Light光明使者

Cosmic name其名

Singularity Energy奇点能源

The frontier前沿概述

Energy is the master input — every other technology in this atlas runs on it. Solar is the form that scales: a fusion reactor 150 million kilometres away, free, with a five-billion-year warranty. The remarkable fact of the last twenty years is that humans figured out how to harvest its output for less than a cent of value per photon. Silicon panels obey their own Moore's-law-of-cost (Swanson's Law): every doubling of cumulative shipped capacity drops module cost about 20%. The result is the steepest cost decline of any major industrial good in history.能量是总输入——这本图谱中的其他每一项技术都靠它运行。太阳能是能规模化的那种：一台距地 1.5 亿公里的聚变堆，免费，质保五十亿年。过去二十年最惊人的事实是，人类学会以远低于一分钱的代价收割每个光子的价值。硅板服从自己的“摩尔定律”（斯旺森定律）：累积出货量每翻一倍，组件成本约下降 20%。结果是历史上任何主要工业品中最陡峭的成本下降曲线。

Historical evolution历史演化

1839
Photovoltaic effect光伏效应
Edmond Becquerel observes electricity from light at 19 years old.19 岁的贝克勒尔观测到光能转电。
1954
Bell Labs silicon cell贝尔实验室硅电池
First practical PV — 6% efficient, $1,800/W.首块实用光伏——效率 6%，每瓦 1800 美元。
2000s
Chinese manufacturing scale-up中国大规模制造
Cost per watt falls below $1, then below $0.20.每瓦成本跌破 1 美元，继而跌破 0.20 美元。
2009
Perovskite arrives钙钛矿登场
A new PV chemistry that goes from 3.8% to 26% efficiency in 15 years.一种新光伏化学，15 年间效率从 3.8% 飙至 26%。
2024
Solar overtakes coal in new build新增装机光伏超煤炭
More than half of new global generating capacity added is solar PV.全球新增发电装机一半以上来自光伏。

State of the art今日状态

Silicon panels are at 24%+ commercial efficiency, perovskite-silicon tandems are crossing 33% in the lab, and unsubsidized utility-scale solar is the cheapest electricity ever generated by humanity in many sunny markets. The bottleneck has moved to the grid (intermittency, transmission) and to storage. Battery and grid-form-engineering are now the choke points, not the panel.硅板商用效率已逾 24%，钙钛矿–硅叠层在实验室突破 33%；在许多日照充足的市场，无补贴的大型光伏，是人类有史以来最便宜的电。瓶颈转移到电网（间歇性、输配）与储能。如今的卡脖子，是电池与电网形态工程，而非组件本身。

Where it goes next未来走向

→
Sub-$0.01/kWh solar in best sites; energy becomes a near-free background utility.最佳厂址的光伏跌至每度 1 美分以下；能量沦为近免费的背景公用事业。
→
Space-based solar power beamed to Earth via microwaves.天基太阳能通过微波回波至地面。
→
Dyson swarm thought experiments stop being thought experiments.戴森云的思想实验，开始不再仅是思想实验。

Applications today现今应用

Electrification of everything (transport, heat, industry).一切的电气化（交通、热力、工业）。
Off-grid energy access for the unconnected billion.为尚未联网的数十亿人提供离网用电。
Powering AI training and inference at scale.为大规模 AI 训练与推理供能。