When electricity was first invented, it was direct current. Current dropped rapidly over long distances and could not be transmitted efficiently. Nikola Tesla invented alternating currentand made it practical to generate large quantities of electricity and then transmit that power over long distances with much less loss. AC is certainly the dominant form of electricity for the world
In 1839, Edmond Becquerel discovered the process of using sunlight to produce an electric current in a solid material. But it took more than another century to truly understand this process. Scientists eventually learned that the photoelectric or photovoltaic (PV) effect caused certain materials to convert light energy into electrical energy at the atomic level.
Photovoltaic panels (PV panels) were invented in 1954 and provided power to satellites.
Although much of the use of PV panels is to provide electricity in remote areas, they are also being used more often by homeowners and commercial buildings in urban areas, as well as to power road signs, lights, etc.
For those who build homes or businesses at considerable distances from power lines, solar systems using PV panels are often more cost effective than extending the power lines.
For environmentalists and others concerned about global warming, PV panels offer one more step in the direction of complete renewable energy sources as opposed to fossil fuel or nuclear sources.
Wind energy has been used for centuries for windmills.
Renewable energy sources such as solar, wind, and geothermal are now expected to be one of the leading growth industries of the twenty-first century.
Do you need an energy consultant, energy auditor, green builder, or green remodeler in North Central Texas or the Dallas-Fort Worth area? Are you purchasing or building a home? Ready to add renewable energy? Interested in living more sustainably? Contact Terry Jensen Frugal Energy, LLC 972 251-1532 or 817 443-2553 Just have a question or two? Please call. If I can answer without seeing your home or business, I will do so at no charge.
Green & Renewable Energy 972 251-1532 or 817 443-2553
Subscribe to free Dallas-Fort Worth Renewable Energy e-newsletter
Sent periodically with home remodeling news and information. Also includes calendar of green events and classes.
Note: The opinions expressedherein are exclusively those of the writers or other participants and do not necessarily reflect theposition of CyberParent. They are not intended to take the place of advice of ahealth, legal, or other professional whose expertise you might need to seek.