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August 20, 2013
Photovoltaic Crystalline Silicon Cell Basics

To separate electrical charges, crystalline silicon cells must have a built-in electric field. Light shining on crystalline silicon may free electrons within the crystal lattice, but for these electrons to do useful work—such as provide electricity to a light bulb—they must be separated and directed into an electrical circuit.

August 19, 2013
Crystalline Silicon Photovolatic Cell Basics

Crystalline silicon cells are made of silicon atoms connected to one another to form a crystal lattice. This lattice comprises the solid material that forms the photovoltaic (PV) cell's semiconductors. This section describes the atomic structure and bandgap energy of these cells.

August 16, 2013
Solar Energy Technology Basics

Solar energy technologies produce electricity from the energy of the sun. Small solar energy systems can provide electricity for homes, businesses, and remote power needs. Larger solar energy systems provide more electricity for contribution to the electric power system.

August 7, 2013
Charting the Future of Energy Storage

As we continue to incorporate more renewable energy into the grid, technologies that store energy like batteries will be key to providing a continuous flow of clean energy even when the wind isn’t blowing and the sun doesn’t shine.

July 29, 2013
Taking Battery Technology from the Lab to the Big City

A small New York City startup is hoping it has the next big solution in energy storage. A video documents what the company's breakthrough means for the future of grid-scale energy storage.

July 24, 2013
Students and instructors at Oglala Lakota College designed, connected and built a mobile solar energy system over the course of two days. | Photo courtesy of Oglala Lakota College.
Sioux Students Kindle Solar Knowledge

How one U.S. army veteran's interest in solar energy created opportunities and possibilities for an entire community.

July 8, 2013
Solar Impulse Lands in New York

Solar Impulse has made history by finishing a cross-country journey across America. Watch breathtaking shots of this solar-powered plane in flight.

July 3, 2013
The Solar Classroom Lesson Plan

Summer activities for parents, teachers and kids to expand their solar energy knowledge.

June 25, 2013
Urban Electric Power Takes Energy Storage from Startup to Grid-Scale

Learn how a New York startup is trying to change the way we store energy.

June 24, 2013
This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system (top of roof) supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography.
Passive Solar Home Design

Passive solar design takes advantage of a building’s site, climate, and materials to minimize energy use.