solar Archives – The Green Optimistic

New Texas Toyota Headquarters Going Green

Courtney Lepping — Sat, 18 Jun 2016 06:09:44 +0000

Toyota’s headquarters is moving to Texas and making a shift towards environmental practices. Toyota consulted the Texas energy management and consulting services firm, Priority Power Management (PPM), to design a plan for a headquarters based on renewable power. The Plano headquarters campus will be ‘going green’ with LED lights, solar panels, building shells designed to […]

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India Expands Solar Cover With the “Rent-a-Roof” Concept

Satya Sivani — Wed, 17 Feb 2016 21:25:38 +0000

Indian electric companies are using the ‘Make in India Week‘ campaign to encourage potential customers to rent out their rooftops to host solar panels. Last Saturday, the Prime minister of India, Sri Narendra Modi has started the ‘Make in India week’ exhibition in Mumbai to attract huge investments in various sectors. Around 2500 international and […]

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GoSun, a Solar Grill That Cooks Even On Cloudy Days

Mila Luleva — Mon, 04 May 2015 10:49:44 +0000

GoSun, a solar cooker that keeps grilling, baking and boiling even on a rainy day, is storming through its Kickstarter campaign. Cooking stoves, electric ovens, gas grills, barbeques, even outdoor coal grills, all have their limitations. For starters, everything electric consumes quite a lot of energy in order to cook you a pleasant meal, and even […]

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MIT Researchers Develop Cheap Material to Convert Solar into Steam

Mila Luleva — Tue, 22 Jul 2014 14:07:14 +0000

Scarcity of water, greenhouse gas pollution from power plants, raising electricity bills, all these factors that send an alarming message to our brain, triggering that guilty feeling inside, every time we go for a relaxing steam room time. But this might soon be over, as MIT researchers developed a new material that generates steam only […]

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Apple Secretive About FirstSolar Facility Purchase

Leigh Hutchens — Sat, 30 Nov 2013 04:44:04 +0000

First Solar’s solar module manufacturing facility in Mesa, Arizona has just been purchased by Apple for $113.6 million. The factory, which has the largest rooftop solar array in Arizona, never had a chance to begin making solar modules. During the Solar PV cost drop that happened a while back, the thin-film solar market was adversely […]

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New Solar Materials Could Lower Hydrogen Energy Cost

Danny Harper — Fri, 15 Nov 2013 07:12:35 +0000

Up to this point, solar has made big gains in efficiency, but nothing near what is needed to effectively compete with fossil fuels. While parity is still a ways off, researchers at Stanford have found that by making materials more resilient, producing hydrogen energy through solar could become cheap enough to compete with its dirty counterpart. […]

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Nanoscale “LEGO” Setup of Aluminum Studs Improves Solar Cell Efficiency

Adele Hall — Wed, 23 Oct 2013 18:04:04 +0000

Most often, precious metals like gold and silver are used in solar cell efficiency. Now, an international research team has found that aluminum may be the better option. They demonstrated that a nanoscale LEGO-style setup of aluminum studs can improve solar cell efficiency by up to 22 percent. Aluminum is already cheap and abundant, and […]

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Renewables Have A Bleak Future Thanks to Carbon Dioxide Regulations, Says GE

Leigh Hutchens — Mon, 19 Aug 2013 23:34:44 +0000

The US Environmental Protection Agency (EPA) is considering setting strict greenhouse gas regulations for existing power plants. Sounds good, right? Not according to General Electric. GE has reported to the Office of the President of the United States that if the EPA sets too stringent regulations for existing power plants, the amount of renewable energy […]

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Researchers Harness Photosynthesis to Produce Energy

Leigh Hutchens — Tue, 14 May 2013 03:18:22 +0000

For years, scientists have been trying to harness the energy of photosynthesis since plants themselves are the perfect solar technology. Plants use photosynthesis to produce energy at nearly 100% efficiency. Researchers at the University of Georgia have been able to tap into photosynthesis directly to produce electricity. They discovered a method to interrupt photosynthesis to […]

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Thin Film Solar Efficiency Record Set by First Solar

Leigh Hutchens — Thu, 28 Feb 2013 03:32:05 +0000

First Solar, an innovator in solar energy, has just set a new world record for solar cell conversion efficiency. The company set the record with its cadmium-telluride (CdTE) thin film solar cell. CdTE solar cells can be produced quicker and cheaper than conventional solar cells. First Solar hopes this will eventually decrease the cost of […]

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Ubiquitous Energy’s Transparent Solar Cells Just a Matter of Time

Leigh Hutchens — Tue, 26 Feb 2013 12:47:11 +0000

New startup Ubiquitous Energy is developing a host of technologies that enable seamless deployment of light-harvesting functionality. The company aims to develop affordable, transparent coatings and films that have the ability to harvest light energy when used on windows or screens of tablet devices or e-readers. Ubiquitous Energy created photovoltaics that take up light to […]

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Underground Greenhouse Allows Year-Round Gardening for $300

Leigh Hutchens — Mon, 25 Feb 2013 15:43:52 +0000

Taking a cue from the Aymara Indians, gardeners are realizing that walipini, an underground greenhouse (or pit greenhouse), allows them to grow year round. Typically, greenhouses are glazed structures. They are expensive to build and costly to heat during the winter. Greenhouses in colder climates also have shorter growing seasons. Walipini were originally developed in […]

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Huge Solar Parking Structure Planned in North Carolina

Leigh Hutchens — Fri, 22 Feb 2013 06:32:29 +0000

Envision Solar plans to use some of the 160 billion square feet of paved land in the world used as parking lots for cars to accommodate a solar parking structure the company calls “solar tree.” In addition to their usefulness, the solar panels act as shade for the cars in the parking lot. This allows […]

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NASA Uses World’s Largest Solar Sail for Asteroid-Exploring Missions

Leigh Hutchens — Wed, 13 Feb 2013 22:38:42 +0000

In 2014, NASA will be launching the world’s largest solar sail ever built. Sunjammer, the solar sail spacecraft, will act as a test bed for the new technology. If successful, the technology will be used in future missions to near-Earth asteroids (NEAs) and maybe even missions beyond the solar system. The name Sunjammer was taken […]

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US Army Goes Green, Creates Largest Solar Array in the World

Leigh Hutchens — Fri, 18 Jan 2013 10:58:39 +0000

The US Army has just unveiled its brand new White Sands Missile Range Solar Power System in New Mexico. This system is the largest solar installation anywhere in the world and has a solar carport of 375 kilowatts and a 4.1 megawatt ground-mounted, low-concentration photovoltaic power plant. The White Sands solar array system covers 42 […]

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Silicon Photovoltaic Wafer Screening System Will Save Solar Industry Billions

Leigh Hutchens — Wed, 16 Jan 2013 07:54:26 +0000

The industrial material production process is very hard on silicon wafers. In fact, between 5 and 10% of these expensive wafers used to make photovoltaic solar cells are damaged during the process, translating annually into billions of lost dollars by the solar industry. Researchers at the National Renewable Energy Laboratory (NREL) have created a Silicon […]

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US Military Embraces Microgrids for Security, Self-Reliance

Leigh Hutchens — Thu, 10 Jan 2013 09:00:29 +0000

The US Department of Defense (DoD) consumes more petroleum than any other organization in the world, and the DoD’s military operations create the biggest demand for all forms of energy. To add a layer of complication, military bases in the US and abroad currently use aging transmission systems that are prone to cyber-terrorism and are […]

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Military Solar Chargers on the Way, According to Alta Devices

Leigh Hutchens — Sun, 06 Jan 2013 05:44:40 +0000

Not long after achieving a 23.5% efficiency rating with its standard solar panel, Santa Clara-based startup Alta Devices is claiming to have the worlds’ lightest solar mats. Alta Devices claims that its solar mats are more efficient, despite challenges to the claim, and the company also claims greater versatility and portability. The company’s tiny military […]

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Cost of German Solar Installations Markedly Lower than US

Leigh Hutchens — Fri, 28 Dec 2012 13:35:49 +0000

Researchers at Lawrence Berkeley National Laboratory have determined that solar installations cost more in the US than in Germany. They verified the total amount of solar power installed in Germany and the US is markedly different – with over five times as much installed in Germany. Both US and German installers paid about $1.80 per […]

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Apple’s Data Center and the Clean Energy Paradox

Leigh Hutchens — Thu, 06 Dec 2012 07:32:57 +0000

According to the North Carolina Utility Commission, Apple intends to double the amount of fuel cells it will use at its data center in Maiden, North Carolina. In November, Apple filed to increase its fuel cell size but kept the endeavor completely confidential. Bloom Energy is installing 50 Bloom boxes for Apple to produce 10 […]

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Is the Downfall of SolFocus a Harbinger of Doom for CPV Modules?

Leigh Hutchens — Thu, 22 Nov 2012 07:30:59 +0000

San Jose-based SolFocus may serve as a harbinger of things to come for the solar panel industry. Admitting financial difficulty, SolFocus has announced that the latest rounds of venture capital investment have fallen through, and in order to survive, the company needs a buyout. SolFocus manufactures concentrating photovoltaic modules (CPV) which uses lenses or mirrors […]

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EU Planning on Building An European Renewable Energy "Supergrid"

Ovidiu Sandru — Tue, 05 Jan 2010 19:45:52 +0000

The first electricity grid dedicated to renewable power becomes a political reality this month, because nine European countries draw up plans to link their clean energy projects around the North Sea.

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Japan Plans to Deploy Space-Based Solar Power Station

Ovidiu Sandru — Tue, 10 Nov 2009 18:11:25 +0000

JAXA, the Japan Aerospace Exploration Agency, wants to compete with the United States' PG&E project for collecting solar power from outer space and beam it on Earth through clusters of lasers and microwaves.

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Nano-Abrasive Material Makes Self-Cleaning Solar Cells

Ovidiu Sandru — Fri, 27 Mar 2009 16:21:12 +0000

Scientists from GIT (Georgia Institute of Technology) have invented a new solar cell surface treatment that could be applied to existing solar cells technology, and that could boost the light absorption into the cell. It also has self-cleaning capabilities.

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How to use solar energy at night or during rainy days

Cristi — Sun, 22 Feb 2009 11:23:38 +0000

In Granada- Spain, German scientists of Solar Millennium AG, have developed a solar-thermal power plant called Andasol 1. The most interesting thing about this power plant is that it can produce energy even when the sun is not shining: at night, on clouding or even rainy days.

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Jim Duke`s Free Electric Car Solar Charging Station

Cristi — Thu, 29 Jan 2009 11:07:45 +0000

A great man on a great mission: Jim Duke, a known environmentalist of the tiny Aspen community El Jebel , Colorado, gives free of charge electricity to electric car owners.

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German Solar Cells Prove New Efficiency Record

Cristi — Wed, 21 Jan 2009 22:30:54 +0000

Recently, German scientists have broken a new record in solar cell efficiency: 41.1%. It seems like the scientific world is in a continuous race towards more and more efficient harvesting of solar energy, but few use it at its maximum power.

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Ian`s Solar-Heated Air Balloons Could Harness 500kW Each

Ovidiu Sandru — Sun, 18 Jan 2009 17:52:51 +0000

How would you like an engine producing your dear electricity? How would you like that engine to have pistons as high as heat-powered balloons? Well, an environmental consultant from Solartran in Brisbane, Australia, by his name Ian Edmonds, has designed such an energy producing "engine" from the classic and romantic air balloon.

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Gold Nanoantennas Could Harvest Solar Power at Night Time

Ovidiu Sandru — Wed, 13 Aug 2008 08:04:03 +0000

While the most high performance classic solar cells only use up to 20% of the solar power falling onto them, researchers from DoE, the laboratory from Idaho, found out a way to capture much more from the Sun's energy, the invisible light spectrum, even at night.

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Nanotube Solar Cells Improve Efficiency 10 Times

Ovidiu Sandru — Thu, 19 Jun 2008 12:45:59 +0000

Nanotechnology seems to help a lot in solar cells improvement. Recent research in solar cell technology shows that a film of carbon nanotubes could replace two of the layers normally used in a solar cell, with improved performance and reduced costs.

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New Solar Panels: 80% Efficient

Ovidiu Sandru — Thu, 29 May 2008 19:18:41 +0000

A team of scientists from the Rensselaer Polytechnic Institute has been developing a brand new solar energy technology that is about to revolutionize the way we collect and distribute solar energy.

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Solar Cells Now Cheaper Than Coal!

Ovidiu Sandru — Wed, 26 Mar 2008 14:11:47 +0000

Nanosolar has created a thin film solar battery, much more efficient than anything existing on the market nowadays. Its thin film technology transfers the sun light in a very efficient way. The Nanosolar power plant will begin producing energy in 2008 and will cover 430 megawatts/year. That’s more than all the capacity of the currently […]

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Moth Eyes Inspiration For New Generation Solar Cells

Ovidiu Sandru — Tue, 26 Feb 2008 18:18:48 +0000

Most moth eyes are made up of adjacent hexagonal sectors. Each sector is filled with thousands of orderly rows of miniscule bumps, or nipple-like protrusions. Though formed so perfectly they appear almost manufactured, each protrusion measures less than 300 nanometers, or 300 billionths of a meter – a size that renders them invisible to all […]

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Bluenergy: Wind and Solar Power in One Piece

Ovidiu Sandru — Tue, 26 Feb 2008 17:32:59 +0000

The BSWT is a vertical wind turbine based on sailing engineering. The wind rotor is rotated by two spiral-formed vanes. For best performance, these vanes are covered in solar cells, so that sun and wind produce electricity as one element. The BSWT installation costs relatively little, produces no noise or significant shadowing, can be easily […]

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How Solar Parabolic Dish Concentrators Work

Ovidiu Sandru — Mon, 25 Feb 2008 10:35:26 +0000

Parabolic dish concentrating systems use parabolic dish shaped mirrors to focus the incoming solar radiation onto a receiver that is positioned at the focal point of the dish, like it’s illustrated in the image below: The fluid in the receiver is heated to very high temperatures of about 750oC. This fluid is then used to […]

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A Soda Can Powered Solar Garage Heater

Ovidiu Sandru — Sun, 24 Feb 2008 17:42:25 +0000

I found out the ingenuity of some people exceeds “common sense” and their inventions are really helpful to humanity. Not on large scale, but for those tech-guys who do nothing but sit all day long in their garages and invent crazy things nobody would have imagined. Most of these inventions stay there, in the respective […]

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A Solar Powered Boat – the perfect gift for a summer day

Ovidiu Sandru — Fri, 15 Feb 2008 15:47:31 +0000

Would you like going on your nearest river or sea or ocean in a summer day? Would you like cruising all day powered only by a solar battery? Well, for 10,500$ you could. Hammacher Schlemmer has built a small solar powered boat for two. Because the batteries hold up to a 6-hour charge, the boat […]

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The Solar Table That Powers Your Laptop!

Ovidiu Sandru — Tue, 12 Feb 2008 18:01:13 +0000

Sudia Design Labs, located in New York, has created a table that you can put out in the sun. What for? To charge it, of course! It has a big solar panel on top of it, is made 90% from recyclable materials and weights 20kg. You can charge your laptop, small appliances, etc. Its 64 […]

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Nano Flakes: more power from the Sun

Ovidiu Sandru — Sun, 10 Feb 2008 20:25:33 +0000

Dr. Martin Aagesen, a researcher at the University of Copenhagen and director of SunFlake Inc. is currently developing a technology called “Nano Flakes”. Nano Flakes are semiconductors with a perfect crystalline structure, and they can absorb about 30% of the solar energy applied to them. “I discovered a perfect crystalline structure. That is a very […]

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Free Energy From Water Mists

Ovidiu Sandru — Sun, 10 Feb 2008 20:16:39 +0000

“Oh, yes! In 25 years we could take over the world” – says Dan Zaslavsky, professor at the Institute of Agriculture of Israel. He and his team devised an Energy Tower working on the principle of rising hot air and lowering the cold one. That is the simple idea. They work on the project since […]

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The Tornado Solar Tower: Get Power From Recycled Heat

Ovidiu Sandru — Sun, 10 Feb 2008 20:10:18 +0000

Did you know electrical power can be generated by using various sources, including the sun, wind, warm air from the ground? The list goes on… The most interesting is the tower resemblant to a solar tower, in which a controlled tornado is created. Engineer Luis Michaud, from Canada, who has proposed this system, has already […]

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Get Free Water Using The Sun!

Ovidiu Sandru — Sun, 10 Feb 2008 15:28:03 +0000

Max Whisson has developed a device that captures water from the atmosphere and pours it into your glass, so you can drink it. There are many inventions regarding this subject, but his is the most interesting to me, because it’s fuel-free and electricity-free. By “electricity” I mean the electric current you take from the wall […]

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Solar Tower – Produce Energy Using Air Turbines

Ovidiu Sandru — Wed, 06 Feb 2008 14:40:45 +0000

SolarMission owns the license to breakthrough Solar Tower large-scale renewable energy technology with the potential to challenge the energy industry as it is operates today. The technology is based on the concept developed by renowned German structural engineer Professor Jirg Schlaich, founder and principal of leading structural engineers, Schlaich Bergermann and Partners. Solar Towers operate […]

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Solar Islands Bring Electricity From Desert and Sea

Ovidiu Sandru — Wed, 06 Feb 2008 14:36:22 +0000

CSEM, the Swiss Center for Electronics and Microtechnology, has signed a contract with the government of the Emirate of Ras Al-Khaimah (RAK) in the United Arab Emirates (UAE), to develop a prototype of a “Solar Island”. The aim of the project is to validate a concept for the large-scale transformation of solar energy into hydrogen […]

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Solar Electrolysis for Dummies

Ovidiu Sandru — Wed, 06 Feb 2008 14:03:05 +0000

Electrolysis: Obtaining hydrogen from water: The Basis for a Solar-Hydrogen Economy This project involves a fascinating experiment in electrochemistry that illustrates several important energy related processes, and provides an ideal context for discussion of several issues related to electricity generation. Introduction to Electrolysis: Hydrogen from Water As covered in the discussion section below, it is […]

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Nanotubes Produce Hydrogen

Ovidiu Sandru — Wed, 06 Feb 2008 07:29:57 +0000

The prospect for the wide spread use of hydrogen as a portable energy carrier is dependent on finding a clean, renewable method of production. At Penn State University, a research group headed by professor of electrical engineering Craig Grimes in the Materials Research Institute is “only a couple of problems away” from developing an inexpensive […]

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Green energy device patents

Ovidiu Sandru — Sat, 02 Feb 2008 14:23:44 +0000

Disintegrating polystyrene Foam polystyrene is a major environmental concern. It is used as a protective packaging for all sorts of products, but it is not biodegradable. Various manufacturers have experimented in making it more environmentally friendly, for example by incorporating cellulose and starch which microbes can break down, or by adding light-sensitive polymers that degrade […]

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The Latest innovations in solar powered hydrogen production

Ovidiu Sandru — Sat, 02 Feb 2008 08:40:13 +0000

Scientists at the US Department of Energy’s (DOE) Brookhaven National Laboratory have developed new ways to make or to modify nanorods and nanotubes of titanium oxide (TiO2). The methods and new titanium oxide materials may lead to improved catalysts for hydrogen production, more efficient solar cells, and more protective sunscreens. The research is published in […]

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Solar Power Gets Cheaper (video)

Ovidiu Sandru — Sat, 02 Feb 2008 08:38:19 +0000

There have been many trends posted involving solar power but in the US it still only accounts for 1% of the electricity generated. Even though it is getting cheaper the main barrier is still the cost. Although growing investment, technological breakthroughs and lower prices have lead to an increase in sales, which lowers prices further […]

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Exfoliation used to produce cheaper and lighter solar cells

Ovidiu Sandru — Wed, 30 Jan 2008 09:28:49 +0000

An ultra-thin solar cell that could provide a cheaper, lighter alternative to existing devices has been created by researchers in the US. James Zahler from Aonex Technologies, together with colleagues from Harry Atwater’s group at the California Institute of Technology and researchers at EMCORE PhotoVoltaics made the device by replacing the relatively thick semiconductor substrate […]

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Why is the natural light dimming?

Ovidiu Sandru — Tue, 29 Jan 2008 13:40:56 +0000

Global dimming is the gradual reduction in the amount of global direct irradiance at the Earth’s surface that was observed for several decades after the start of systematic measurements in 1950s. It is thought to have been caused by an increase in particulates such as sulfur aerosols in the atmosphere due to human action. The […]

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How to build a solar car for your kids

Ovidiu Sandru — Tue, 29 Jan 2008 20:32:33 +0000

Not only is the sun a source of heat and light, it’s a source of electricity too! Solar cells, also called photovoltaic cells, are used to convert sunlight to electricity. Solar cells are used to provide electricity all kinds of equipment, from calculators and watches to roadside emergency phones and recreational vehicles. Visit sandi.net/energy/pdf/playground/cp_solarcar.pdf for […]

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