Off-grid energy systems such as photovoltaics, solar water heating, and on-site water collection can keep basic services going.

非常规的能源系统例如光电科技，太阳能热水及就地取水都能运作建筑的基本设施。

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No one is sure just how many Americans live off the national public-utilities grid - relying on generators or alternate energy sources such as solar, wind and geothermal.

没人知道究竟有多少美国人靠国家公共事业的网络生活—依靠发电机或替代能源，如太阳能、风能和地热能。

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In the nearer term, such technology could at the very least power parts of the globe that are currently off the grid with clean, plentiful, and easy-to-come-by energy.

就算在近期，这项技术至少有望提供一种更洁净、更充足、更易获取的能源。

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The logistical challenges involved in sustaining military operations in remote areas where wars are commonly waged has convinced the U.S. Department of Defense to deploy a growing number of cutting-edge solar-energy technologies in off-grid combat zones.

FORBES: Solar Power Brings NetCentric Warfare to Afghanistan

We take off-the-shelf IT and Internet technology and transform the power grid and electricity transmission lines into an energy Internet.

FORBES: Jeremy Rifkin's Third Industrial Revolution