The top of the stack is battery power, and the bottom of the stack is gasoline power.

FORBES: 2013 Chevrolet Volt - Not Quite Electrifying

The lower density means dramatically less drag force acting on the spinning disk stack so that mechanical power into the motor is substantially reduced.

ENGADGET: HGST develops helium-filled, high-capacity hard drives: no, they won't float away

But power generation starts to stack up as more people get in the saddle.

CNN: Virtuous cycles

Rogers is hoping to add a few nuclear plants to existing sites while he waits for more affordable technologies to remove the 100 million tons or so of CO2 (that would be 27 million tons of carbon) his power plants send up the stack each year.

FORBES: Magazine Article

When paired with the Qualcomm Atheros AR6003 or AR6004 chipsets, the mobile access point software stack enables customers to design high performance, low power portable and fixed 802.11n routers.

ENGADGET: Qualcomm's Gobi modem chipsets combine 84Mbps HSPA+, LTE-Advanced

Today, it is more widely appreciated that by moving an application to the cloud, less people are needed to rack and stack technology, demand for servers decrease, the need for cooling and power generation decreases as well, to take three prominent examples of costs savings.

FORBES: Three IT Trends for IT Execs to Pursue According to Informatica Co-founder and Current SnapLogic CEO, Gaurav Dhillon

With a combined heat and power plant, some of those 76 wasted BTUs that were going out the stack are captured, generally as steam or hot water that can get piped around and used for heat.

FORBES: Massachusetts Addresses "Biomass Loophole" and Limits Subsidies

Parekh and Perry declined to describe what changes they have made to the stack, other than to say they are drastically reducing the amount of material needed to store power, and that their concept can be applied to any number of different battery chemistries.

FORBES