In the News

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Solar Power for the Poor – March 3, 2013 Marc Gunther speaks with d.light’s Chairman and CEO, Donn Tice, about his efforts to prove the late C.K. Prahalad’s thesis, Tice’s mentor, that companies can make money and do good by creating products and services for the world’s poorest people.
Where There’s Smoke, There’s Fire:  A Call to Action for Better Indoor Air Pollution Research – February 27, 2013 Donn Tice, d.light Chairman and CEO presents a challenge to policy makers, researchers and others to investigate the effects of kerosene smoke from lanterns, as well as cookstoves as a major contributor to indoor air pollution (IAP).
Chairman & CEO of d.light offers thoughts on Crowdfunding – February 14, 2013 Jim Witkin, writing for the New York Times Environment section, recently spoke with d.light’s Chairman & CEO, Donn Tice about SunFunder, a new entry into the online crowdfunding sector.  Witkin queried Tice about whether crowdfunding can unlock a significant amount of financing for businesses to bring renewable energy products to off-the-grid areas.
d.light Rep Brings Solar Lanterns to brighten Afghans’ future – Jan. 25, 2013 Chikako Fujita wants to make a change  by selling solar lanterns in Afghanistan, to create a healthier and more prosperous future for its citizens.
d.light Wins Zayed Future Energy Prize – January 15, 2013 d.light design is honored to be chosen as the recipient of the prestigious $1.5M Zayed Future Energy Prize, the world’s largest annual award in the renewable energy and sustainability sector. d.light was selected in the small and medium size enterprise category. The prize, managed by Masdar on behalf of the government of Abu Dhabi, is presented annually to companies that have shown outstanding, innovative achievements and leadership in the global search for a sustainable energy future.
Bringing Sunlight to Africa, and Western Investors – December 31, 2012 Christopher F. Schuetze of the International Herald Tribune recently spoke with d.light’s Co-Founder and President Ned Tozun about the global impact the company is making. Solar power use in the United States is booming, however in parts of the world where access to any kind of electricity — let alone the green kind — is scarce, the news is not as bright, at least not yet.
d.light Celebrates Ten Million Lives Empowered - November 14, 2012 d.light design today announced that it has reached a major milestone of ten million lives empowered worldwide through its solar powered lighting products. The historic event was reached shortly after celebrating five years in business.
Delighting in Delivering Light to the World – October 17, 2012 Like many young, idealistic, and smart “tech” folks, Sam Goldman and Ned Tozun were told over and over that their idea would never fly.  But their drive, passion to succeed, and bit of naivety beat the odds and now d.light design is improving the lives of millions.
LivingSocial’s First Ever Glow-in-the-Dark 5K Dance Party – Sept 27, 2012 “The theme of the event is to light up the night in D.C.,” says Bram Levy, LivingSocial’s senior director of development. “Part of that will be by having our runners visually lighting up the night here.” . . . LivingSocial and Mercy Corps will send safe, bright, durable, and renewable energy solar lanterns designed by d.light. “We wanted to create the opportunity to light up their night, as well,” Levy says.
The Secretary General’s Sustainable Energy for All Report – Sept 21, 2012 The United Nations General Assembly took place the week of September 27, with a full day focused on Sustainable Energy for All. The resulting report is entitled “The Secretary General’s High Level Group on Sustainable Energy For All: Report of the Co-Chairs.” d.light, along with other practitioners, is noted under Business Actions Committed To.
Cheaper and Better Solar-Powered Electric Lights Promise to Do Away with Kerosene-Fueled Lanterns – Sept 1, 2012 Just as the spread of mobile phones in poor countries has transformed lives and boosted economic activity, solar lighting is poised to improve incomes, educational attainment and health across the developing world.
10 Solar Projects in India that Can Help Fight Grid Blackouts – Aug 12, 2012 While the massive blackouts in India are focusing attention on the opportunities for clean power in India, the country already has many solar projects under way. Here are some of the most notable and promising efforts… d.light recently celebrated its fifth anniversary and the company has reached the goal of 7 million people using its solar-powered products in 40 countries.
Head Post Offices to Sell Solar Lanterns – Aug 10, 2012 d.light solar lanterns will be available in all head post offices in [Chennai] from 16 August. “It was a huge success and now we are making it available in all the head post offices also,” said a senior India Post official …
Outdoor Retailer Summer Market: Products for Sailors – Aug 7, 2012 d.light lanterns caught the eye of DK Howe at the Outdoor Retailer Summer Market’s trade show held August 2-5 in Salt Lake City… The d.light is a solar powered LED light that is ultra-light and resistant to sun and rain. The light was developed by a Peace Corps worker who wanted to provide an alternative to kerosene lanterns in remote places where there is no electricity.
Interview with Mandeep Singh, MD India – June 8, 2012 Mandeep Singh is no stranger to social engineering; his first job was with Amul. Now, after many years, taking on the mantle of Managing Director at d.light Energy India has reintroduced the 43-year-old to his first love–connecting with the masses. As the company goes about its ambitious mission of eradicating kerosene lanterns, Singh focuses on scoring in the numbers game.
Low-Cost Solar Brightens Lives in the Developing World – June 6, 2012 A decade ago, Katherine Lucey oversaw a heavily subsidized $1,500 solar-light installation in the rural district of Mpigi in central Uganda. “It was such a simple, fundamental intervention,” said Lucey, who now runs a solar lamp nonprofit called Solar Sister. Today, solar lights are making similar differences in millions of lives in the developing world–at a fraction of what they cost when Lucey did the installation at Mpigi…
BRAC Comes Up with Low-Cost Solar Lights – May 29, 2012 BRAC announced the launch of d.light design solar lights that are safe for health and can play an important role in education and agricultural activities at night. The partnership was organized by the Agriculture and Food Security Programme (AFSP) of BRAC. “This initiative will help rural poor with an alternative low-cost light source to kerosene lamps and reduce the health risks related to kerosene,” said Mahabub Hossain, executive director of BRAC…
d.light’s Approach to the Energy Poverty Challenge – June 8, 2012 ONE invited friends and supporters to share ideas on how to provide energy for the world’s poorest people as part of the Energy Poverty Challenge. In this piece, Sandra R. Curtis, International Marketing Fellow of d.light, discusses how companies can increase access to modern energy and provide solar lighting options to poor or overlooked communities.
d.light’s CEO on Innovation, Energy, and Emerging Markets – April 10, 2012 Donn Tice, the CEO and Chairman of d.light design, responded to the question of how does an entrepreneur make a difference in emerging markets like China or India… “Cleantech is necessary but insufficient for success. It’s great and important–once you have technology, you’re in the game. It’s not ‘build it and they will come.’ It’s ‘What is the appropriate technology for these consumers and these markets?’”
Forbes’ List of the Top 30 Entrepreneurs – Nov 30, 2011 A fifth of the world’s 7 billion people do not have access to reliable electricity, instead using dirty and dangerous kerosene lamps.Sam Goldman and Ned Tozun, of d.light design, manufacture inexpensive lamps and sell them in communities that don’t have reliable electricity.
Around the World in 100 Objects – November 7, 2011 The d.light S250, our solar-powered lantern and mobile phone charger, is currently on display in the British Museum as the 100th object in BBC Radio Four’s “A History of the World in 100 Objects.” Neil MacGregor, the museum’s curator, has written a book called “A History of the World in 100 Objects.” MacGregor appeared on PBS NewsHour to talk about his book. The d.light S250 was one of the objects Jeffrey Brown interviewed MacGregor about.
Entrepreneurs Crowd Social Ventures – November 7, 2011 Zolli says relatively few social entrepreneurs will succeed. One company that has is d.light. Almost 2 billion people worldwide live without electricity. Mainly they use dangerous and dim kerosene lamps for light. So d.light has developed a line of safe and affordable substitutes.
A History of the World in 100 Objects – November 6, 2011 The d.light S250, our solar-powered lantern and mobile phone charger, is currently on display in the British Museum as the 100th object in BBC Radio Four’s “A History of the World in 100 Objects.” Neil MacGregor, the museum’s curator, has written a book called “A History of the World in 100 Objects.” MacGregor appeared on Comedy Central’s Colbert Report to talk about his book. The d.light S250 was one of the objects Stephen Colbert interviewed MacGregor about.
Stanford Gets $150 Million to Fight Poverty – November 4, 2011 More than 20 projects have continued after students completed the course, and some are now on the market. Examples include d.light, a company that makes solar-powered lights for people without access to reliable electricity.
d.light Cofounder and President Ned Tozun on WOR Radio – October 31, 2011 Joan Hamburg chats with cofounder of d.light Ned Tozun about his mission to enable households living without reliable electricity to attain the same quality of life as those with electricity.
d.light Launches Solar Lantern for $8 – May 20, 2011 d.light design has launched one of the world’s most affordable solar lanterns. Priced at $8, this lamp is designed for millions of people who have no access to electricity. “The d.light S1 makes bright and clean solar lighting accessible for base-of-the-pyramid households who want a better life for themselves and a better future for their children,” Donn Tice, CEO, d.light design said.
d.light Launches an Ultra-Cheap Solar Lantern for Studying – May 19, 2011 A few years back, d.light, a start-up that began as a Stanford design school project, announced that it had created the world’s cheapest solar lantern. For you, with your electric lights, this doesn’t seem like a big deal. For everyone who relies on kerosene (and all of its associated fumes) for lighting, it’s a life-changer. It’s newest offering, the S1, is designed specifically to help students.
The Humanitarian Side of Solar and Renewables – March 22, 2011 The energy market is ruthlessly competitive. American consumers want cold beer and warm showers from low-cost utilities, and the “green-ness” of the electricity is of minimal concern to the average user. This pits solar firm versus solar firm and wind power firm versus wind power firm. More broadly, this mindset pits renewable energy against the entrenched incumbents of coal, gas and nuclear, which are armed with their $0.09 per kilowatt-hour power…. Amidst this furious economic struggle, it’s easy to lose track of some of the softer benefits of distributed energy and renewables, as well as the humanitarian aspects of the green energy business and its people.
Gaining the Green Advantage – March 17, 2011 When number 100 in the BBC and British Museum’s “A History of the World in 100 Objects” was unveiled last year, the judges’ choice was surprising. The list that started with the Olduvai handaxe – man’s first tool to control the environment – would end with the d.light solar-powered lamp. The lamp can potentially transform the lives of the 2bn people globally who have no access to power, spending an estimated 70 per cent of their income on firewood and kerosene.
5 Hot Start-Ups to Watch – December 20, 2010 Next year could be an inflection point for Kiran – the kerosene killer. d.light, the company that makes these solar power lanterns, has just reorganized its supply chain in anticipation of a scale-up. “We moved the entire design operation to Hong Kong from India and we now have a manufacturing facility in Shenzhen, China,” says Sam Goldman, co-founder, d.light design.
This Product Can Change Your LIfe: the d.light story – December 2, 2010 Imagine, as a manufacturer, that your potential market is two billion consumers worldwide. This almost inconceivable figure is the ultimate scale of d.light’s ambition, a consumer-products company set up by a pair of social entrepreneurs in 2007 to design and produce lighting solutions for the one in four people on this planet who live without electricity. With two million lives already positively affected by d.light’s innovative solar-powered lamps and counting, the company’s story is only just beginning.
Bringing Clean Light to Poor Nations and Moving Beyond Charity – October 20, 2010 Ask a developer of off-grid lighting about a solar lantern and he’ll tell you about a kerosene tragedy. A child killed in Benin. A dormitory burned to the ground in Tanzania. Countless men and woman across Asia, Africa and elsewhere suffering — and some dying — from respiratory ailments. The poorest people on the planet together spent almost $40 billion last year on kerosene and other rudimentary and dangerous fuel-based lighting.
Want to Help Developing Countries? Sell Them Good Stuff – Cheap,September 27, 2010 That’s why, at next year’s G-whatever meeting in France, world leaders would do well to rip up those big checks to tin-pot autocrats and channel the cash to startups instead. Help those companies make cheap, useful products to sell to the world’s poor, who will use them to become less poor, and everybody wins.
Lighting Up – September 16, 2010 The runaway success of a newly-designed solar lantern has come to spell new hope for the power-starved hinterland of the country. Launched in October last year, the Kiran, or S10, a kerosene lantern replacement for rural India and Africa, is priced at Rs 549 and lasts up to eight hours on a single day of solar charging.
Marketing to the Bottom of the Pyramid – September 9, 2010 Almost a third of the world’s population earns $2.50 or less a day. The enormity of this disparity takes my breath away, but there’s an interesting flip side to it: That’s a market of more than five billion dollars a day. Add the next segment ($5 a day) and it’s easy to see that every single day, the poorest people in the world spend more than ten billion dollars to live their lives.
Power to the People,September 2, 2010 Around 1.5 billion people, or more than a fifth of the world’s population, have no access to electricity, and a billion more have only an unreliable and intermittent supply. Of the people without electricity, 85% live in rural areas or on the fringes of cities. Extending energy grids into these areas is expensive: the United Nations estimates that an average of $35 billion-40 billion a year needs to be invested until 2030 so everyone on the planet can cook, heat and light their premises, and have energy for productive uses such as schooling.
Solar Energy Brings Power to Rural Africa – August 23, 2010 In rural communities of Africa — where more than 95 percent of homes have no access to electricity — solar energy has the power to transform lives. Globally, 1.5 billion people, one quarter of the world’s population, live without electricity, according to a United Nations report. Those who can afford any power at all spend large proportions of their income on kerosene for lamps or travel to larger towns to charge their batteries several times a week.
eBay Founder Steps Up India Philanthropy – August 17, 2010 Omidyar Network, the philanthropic investing firm of eBay Inc. founder Pierre Omidyar, plans to plough as much as $200 million into India in the next five years. The organization’s target: businesses and non-profits that can make a “social impact” and improve life for people on the lowest economic rungs.
d.light Lamp Made by Indian Company Wins Green Oscar – July 3, 2010 A solar lamp designed by an Indian company in California and marketed successfully in India has won the Green Oscar, a top award for new sources of energy. The solar lamp has brought light to many a dark home and after a resounding sales success in India, the solar lamp – d.light – has been awarded the Ashden Award for sustainable energy.
Affordable Solar Lamp Four Times Brighter than Kerosene Wins Ashden Award – July 2, 2010 We’ve followed the Ashden Awards before because they find and bring attention to technologies around the world that are helping to drive a sustainable energy revolution… They’ve just announced the latest round of winners, and the solar lantern from India-based d.light design is among them.
Solar Lamp Wins Award for Helping Developing Countries – July 2, 2010 The developers of a solar lamp that aims to replace kerosene-burning lights in developing countries have won a prestigious environmental award. d.light says its lanterns contribute to the reduction of carbon emissions.
eBay Founder Omidyar Leads $5.5M for d.light’s Solar Lanterns – June 24, 2010 d.light, the startup making solar-powered LED lanterns to improve lighting in the developing world, landed $5.5 million earlier this week. But it’s made news again, revealing the identity of its lead investor: the Omidyar Network, the do-good investment firm founded by eBay founder Pierre Omidyar and his wife Pam.
d.light’s Lofty Goals Meet Practical Challenges in India – May 24, 2010 Every night at 6 p.m., the electricity in Bhojaka, India, shuts off. Until recently, the residents of this quiet, rural hamlet — several hours’ drive from bustling Delhi — had no recourse after dark. Electricity was supplied to meet the needs of the owners of rice, wheat, and sugarcane fields around town. When the farming stopped at sundown, the lights went off.
He’s Lighting up Countless Lives – May 11, 2010 Experience of extreme conditions can provoke change—and innovation. Sam Goldman spent four years as a Peace Corps volunteer in the Republic of Benin in West Africa between 2001 and 2005. He lived without electricity, relying on kerosene lamps for light. A meeting with his neighbour’s son in Benin—who had been badly burned in a kerosene-lamp fire—convinced Goldman that an alternative to the hazardous kerosene lamp had to be found.
Cleantech Startups Heat Up in India – February 22, 2010 Everyone knows cleantech is a hot investment category in the US. But what about in such emerging markets as India? On a recent tech tour of Bangalore, Delhi and Mumbai, I found that India has its share of entrepreneurs and investors who want to save the world.
Say Goodbye to Kerosene Lamps, Here’s Kiran! – December 23, 2009 Their mission is to bring light to millions of households that do not have access to electricity. Betting big on solar lighting products, Sam Goldman and his team have embarked on an enduring journey to remove darkness from the remotest corners of the world.
The New Recruits: Can Capitalism Save the World? – October 29, 2009 What do you get if the 1960s and a banker on Wall Street had a baby? Social entrepreneurism. Though it has a long history, it’s been a buzzword since Muhammed Yunnus and his Grameen Bank won the 2006 Nobel Peace Price for lifting people out of poverty through microloans.
d.light: Bringing Light to the Developing World – October 22, 2009 At first glance, the Kiran solar-powered lamp made by d.light is just plain cute–it would look right at home in an Apple store. But the real news is that it could save people in the developing world a substantial amount of money, and spare the atmosphere millions of tons of carbon dioxide.
d.light’s $10 Kerosene Killer – October 22, 2009 On Tuesday, d.light released its latest product, the Kiran… Quite frankly, this little lamp is a big deal. There are more than 1 million deaths every year attributed to kerosene lamps; 62% of the people who die are under the age of fourteen.
Cheapest Solar Lantern Aims to Displace Kerosene Lamps – October 22, 2009 d.light has dubbed their newest solar lantern “The Kerosene Killer.” That’s because it is the cheapest, relatively high quality solar lantern on the market. d.light has been aiming to wipe kerosene from the face for awhile now, and they might have just come out with something that could do the trick.
Will the World’s Cheapest Solar Lantern Pull in Profits While Igniting Economic Development? – October 21, 2009 When the sun goes down, much of the world goes dark. At home productivity sinks–you can’t read or learn without light–unless you can afford to buy kerosene, which emits noxious fumes.
Kiran by d.light is World’s Most Affordable Solar Lantern – October 21, 2009 d.light has designed the world’s most affordable solar lantern which will be available on the market shortly. The Kiran solar lantern is designed specifically for families living in developing countries who do not have access to a reliable source of electricity.
$10 Solar-Powered Lamp to Help the Poor – October 18, 2009 Costing just $10 dollars the “Kiran” solar lantern aims to illuminate the lives of the 1.6 billion people in the world who live without access to mains electricity, relying instead on dangerous and dirty kerosine lanterns to light their homes.
An Update from one of BW’s America’s Most Promising Social Entrepreneur Finalists – October 15, 2009 Last spring, when we first wrote about Sam Goldman and Ned Tozun, founders of d.light, they were one of BusinessWeek’s America’s Most Promising Social Entrepreneur Finalists… d.light checked in to tell us they are about to globally launch the Kiran lamp.
Small companies throw up winning teams in downturn – October 9, 2009 Companies which design products for rural markets and focus on the ergonomics and usage requirements have done well. New Delhi-based d.light is one of those companies whose vision is to equip households without electricity in rural areas with affordable solutions.
3 Indian Firms on Global CleanTech 100 List – September 11, 2009 Three Indian companies have found place on the list of 100 promising private clean technology companies in the world. The list, the first-ever of its kind, recognises companies offering solutions to the world’s most pressing environmental challenges.
For American Consumers, a Responsibility Revolution – September 10, 2009 It’s a playful name for a serious company: d.light sells $10-to-$25 solar-powered lamps in more than a dozen countries where people lack electricity and often spend a lot on kerosene, which gives off noxious fumes.
Lighting up Lives – September 5, 2009 Five entrepreneurs are quietly lighting up the homes of millions who still have no access to electricity.
‘Social Entrepreneur’ Has Venture Backing to Light Up the World – August 20, 2009 d.light, which manufactures and sells solar-powered lamps in poor areas of the globe, is an example of a company that seeks to bring entrepreneurship to a social mission.
International Initiatives: Simple Local Solutions to a Complex Global Issue – July 10, 2009 “We’ve spent hundreds of hours in towns and villages in developing countries to find out what our customers need,” Ms Dorcas Cheng-Tozun, the communications director of d.light, says. It is no surprise that they want products that are durable, efficient, cheap to purchase and inexpensive to run.
Project Launched for Green, Affordable Lighting in Rural India – June 4, 2009 The Shell Foundation has teamed up with d.light, a lighting and power company, to deliver affordable and high quality lighting solutions to rural households living without adequate electricity in India.
Safer and Affordable Solar Lamps for Rural Households – June 4, 2009 d.light, a lighting and power company, has joined hands with UK-based NGO Shell Foundation to deliver affordable and high quality lighting solutions to rural households living without adequate electricity in the country.
India’s First 100% Solar Village – April 16, 2009 New Keringa is a model village in Southern Orissa, India, with 47 families. It is the first village in Orissa to be lit by solar energy, thanks to the unique joint initiative of d.light and Beyond Solar.
America’s Most Promising Social Entrepreneurs – April 3, 2009 Sam Goldman and Ned Tozun first met while MBA students at Stanford University’s Institute of Design, where they worked together on projects in a class called Designing for Extreme Affordability.
Products for the Other 3 Billion – April 1, 2009 The mission of the Stanford class Entrepreneurial Design for Extreme Affordability: to teach a new generation of entrepreneurs to use their business and engineering smarts to design and sell products – profitably – for the developing world. Two such budding entrepreneurs are Nedjip Tozun and Sam Goldman, founders of d.light.
In Pictures: 10 Eco-Friendly Innovations – March 23, 2009 Harnessing a mix of creative thinking and engineering know-how, entrepreneurs have come up with a host of affordable, eco-friendly solutions to everyday problems ranging from cheaper solar panels in California to irrigation challenges for small farmers in Myanmar.
A Social Solution, Without Going the Nonprofit Route – March 4, 2009 It used to be that people who wanted to solve a social problem – like lack of access to clean water or inadequate housing for the poor – created a charity. Today, many start a company instead. d.light, a company cofounded by Sam Goldman, is an example.
Let There Be Light: Stanford Startup Aims to Bring Light to 1.5 Billion – January 12, 2009 Sam Goldman and Ned Tozun are hard at work figuring out how to bring light to the more than 1.5 billion in this world without it. In 2006, Sam, now the CEO, and Ned, the President, founded d.light with the assistance of classmates in an entrepreneurship class at Stanford’s Graduate School of Business.
Angel-Backed Startups Find Favor with First-Round Funding – November 17, 2008 Start-ups backed by angel funds and networks are becoming popular with venture capitalist (VCs) for first-round, or so-called Series A, funding. Angel funds and investors, entrants to the Indian start-up landscape in the last couple of years, back start-ups with initial funding that usually helps managements of such firms to begin operations.
Do-Good Light Company d.light design Approved by Investors – November 7, 2008 d.light, a company started in Silicon Valley and now resident in New Delhi, India, has a mission to replace toxic kerosene lighting for developing world villagers with solar-powered LEDs.
Acumen Fund Announces New Energy Portfolio Investments in Power and Lighting Solutions for Low-Income Households – November 4, 2008 Acumen Fund, a social venture fund that invests in sustainable, scalable businesses that provide affordable healthcare, water, housing, and energy services to underserved households in South Asia and Africa, announced today the following new investments as part of its expanding energy portfolio in India.
Making a Clean Profit – November 2, 2008 Deploying clean tech solutions like solar or bio-gas power in rural areas sounds more like a government welfare scheme or an NGO programme. But now entrepreneurs are jumping in as they see a business opportunity.
Rural Lighting, Minus the Kerosene – June 18, 2008 This post is being written without lights. That’s a decision made because of where I am in western Canada and the time of day this is being written. But electricity isn’t so abundant everywhere in the world.
Startup Sees Big Business in Replacing Kerosene – July 2, 2008 About 1.6 billion people still rely on kerosene lanterns to read, work or study after dark, according to a fledgling company that hopes its LED lights will replace those lanterns, eliminating both pollution and fires.
d.light Rolls Out Affordable Solar LED Lamps – June 17, 2008 Billions of people continue to burn dangerous and costly kerosene in lamps to see at night. Start-up d.light, which aims for no less than to eliminate kerosene around the world within a decade.
Stanford Graduates Bring an Idea and Rays of Light for Rural India – June 17, 2008 Rural India is the new developmental marketplace as some new age entrepreneurs fueled by venture funds take it upon themselves to shed some light on the India that still survives without electricity.
Lighting Up Rural India – June 16, 2008 Some 1.6 billion people around the world live without access to regular electricity. A start-up company founded by some ambitious recent graduates of Stanford Business School aims to ease that problem–and make a profit at the same time.
d.light: Solar-Powered LED Lights For the World’s Neediest – June 16, 2008 Designing sustainable products for the consumer that spends just $2 a day can be a dual challenge: The goods have to be cheap and eco-friendly.
d.light Shines Light Where Energy Doesn’t Flow – June 16, 2008 Startup d.light wants to give customers in developing countries a safe, cheap and modern-day lighting solution to the kerosene lantern.
d.light Sets Out to Replace the Kerosene Lamp – June 16, 2008 A San Francisco-based company with plans to help the developing world snuff out its kerosene-burning lamps and replace them with cheap, solar-powered LEDs and compact fluorescents has finally unveiled its production models and announced the details of its for-profit business plan.