Reductions in the cost of solar power, efficiency improvements, and sharply improved batteries and other means of electricity storage are helping to make possible a world of increasingly distributed energy generation, based on renewable sources. That, in turn, promises increasing freedom from the dangers created by our vulnerable electric grids and our reliance on oil.
太阳能成本降低、能效提高和大幅度改观的电池和其他储电方法正在实现以可再生资源为基础的日益分散化的能源发电。而这些反过来又让我们逐渐摆脱脆弱的电网系统和对石油依赖所带来的威胁。