The technology is not inherently frugal or green.It can be used to deliver not just clean renewable energy more efficiently, but also the grubby coal-fired sort.

• 技术并非内在的就是节约和环保的，它不仅可以被用于更有效的传输清洁的可再生的能源，对于肮脏的燃煤火力发电也是一样。