At cell towers in extreme temperature environments, Nanophosphate EXT further reduces operating and maintenance costs by minimizing or eliminating the need for air conditioning or heating.

ENGADGET: A123 Systems' new lithium ion tech keeps EV batteries cool, your wallet in check

Boeing claims the 7E7 would cut fuel burn by 20 percent over current aircraft and save airlines 10 percent on overall operating costs, citing new, fuel-sipping engines and lightweight materials that will also cut maintenance costs.

CNN: Airlines warming to Boeing 7E7 jet

From that, subtract operating costs--insurance, property tax and maintenance.

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