"Burning oil on the Gulf of Mexico," from the TEDxOilSpill expedition, June, 2010, photo credit: James Duncan Davidson; For more information on June 28 event: http://www.TEDxOilSpill.com

Despite my general rule that once a day is designated for a cause, the cause is likely lost (or at least in serious trouble), I found myself rooting mightily last Saturday for Solarday. Missed it? It is only in its second year, but with global aspirations and the power of the sun on its side.

The power of new sun that is, not the fossil kind captured by plants millions of years ago and transformed into oil, coal and gas. Old sun is best left underground, underwater, under salt seals, in mountains and far, far away from tail pipes and smokestacks. Old sun warms the Earth in all the wrong ways. New sun offers a way out of Dodge.

The “teachable moment” in the Gulf, now stretching into its third month and threatening to stretch for years, frames the debate in the starkest of terms: oils spills versus sun spills. Which one would you prefer to soak up?

We have loads of clean / cleaner energy options beyond solar (photovoltaic, water heating):

• wind power (macro and micro)

• wave power

• fuel cells (e.g., the Bloom box)

• efficiency (less is more, more for less, instant savings and sure-fire competitive edge)

• biofuels (check out Willie Smits’  on tapping sugar palms sap for ethanol - no tree-cutting required)

• Bill Gates’ scheme for what he promises is  better, safer version of nuclear

• distribution (distributed power generation and smarter grids)

Every week journals burst burst with news on ever-niftier applications for existing technologies (the solar light bulb) and breakthrough improvements, such as MIT professor Daniel Nocera’s efforts to biomimick photosynthesis for “personalized energy,” all the while improving water use and quality:

Energy start-up Sun Catalytix aims to scale up Nocera’s work in the lab for real-world application.

DEMAND: THE OTHER PART OF THE EQUATION

As Nocera points out, unless we get a hold of demand, energy supply is always going to be a game of catch-up – as it is for resources of every kind. Casting the issue in terms of per capita usage actually provides a perverse incentive for over-population.

Rather, the question isn’t how to most equitably divvy up a finite fossil fuel pie, but how much energy is needed for people to live happy, healthy, productive, environmentally-compatible lives.

The education of women in developing countries, which has been shown to correlate to family-planning, along with easier access to contraceptives, are key for a successful global energy strategy.

Business-as-usual means that “every three years, a new Saudi Arabia needs to be discovered and exploited just to maintain the level of output,” according to Antony Froggatt, a senior research fellow at British think tank, Chatham House and co-author on a new report co-produced with insurance giant Lloyd’s of London on business-smart energy strategies: Sustainable Energy Security: Strategic Risks and Opportunities for Business.

Global energy use is expected to climb a staggering 40% over the next two decades. Even if there were no risks or downsides to deep water drilling and tar sand mining, this would be a tall order to fill. “In an energy insecure world, resilience is an absolutely key function,” says Froggatt.

So how do we put more “bounce” back in the system?  Clearly not by continuing to pour money into vulnerable pipelines, pirate-friendly tanker ships, inefficient central power generation plants, “dumb” grids and top-down one-size-fits-all answers driving an ever-depressing downward spiral, greased by oil spills.

How do we transition to the dazzling variety of better technologies that are either already on the shelf or on the near-term horizon? This is a business and logistics question, not a technical question (which is not to say that substantial and steady R&D funding isn’t required – it most definitely is).

If the Chatham House report is right, things will start to get really dicey by 2013, when China’s domestic oil production is expected to peak and competition for global supplies becomes even more fierce.

REINVENTING FIRE

Few people have been as tenaciously focused on saving the world from its fossil fuel addiction as Amory Lovins, chief scientist and cofounder of the Colorado-based “think and do tank,” Rocky Mountain Institute (RMI). For over 30 years, Lovins, a geek’s geek, has relentlessly and with trademark statistic-laced cheer, shown how saving energy is almost always cheaper than generating it (“negawatts” and “negabarrels”) and how thoughtful design can translate, often immediately, to the bottom line.

When Detroit declared that cars were as efficient as they were ever going to be, Lovins set about reinventing the auto as a “Hypercar,” experimenting with carbon-composite plastics (light-weighting and saves on “paint shop” costs), LED lights, hydrogen fuel cells, better insulation to cut A/C needs and low drag design.  While the team was at it, they did away with the steering wheel in favor of joystick, too. Voila! 100 mpg.  Many of the technologies (though, so far, not the joystick) have been adopted by major manufacturers (video).

Green building design has always been a central part of the RMI’s work, starting with Lovins’ own home, The Banana Farm, nestled in the Rockies of Snowmass, CO. The most ambitious project so far: a $13.2 million retrofit of the Empire State Building, designed to save just under $4 million in energy costs per year.

As impressive as these projects are, they are the warm up for what may very well be Lovins’ masterwork: Reinventing Fire. RF, a new research initiative just getting underway,  builds on work from an earlier project, “Winning the Oil Endgame,” a business-driven road map for weaning the U.S. off oil by 2050. Lovins explains in this TED talk from 2005:

For Reinventing Fire, once again Business is targeted as the engine of change, with competitive edge as the carrot motivating Business. CO2 and pollution reduction are almost incidental benefits. Rather, RF aims to make virtuous circles possible: Do the right thing and all kinds of good things follow.

With the clear-headed cunning that comes from decades at the front lines, the RMI team has carefully chosen its battles:

In the web of interconnections spanning how energy is produced, transported, distributed and used, all the points along the way are fair game for intervention. But decades of research into how energy moves from fossil-fuel sources to uses have revealed key leverage points in four sectors: transportation, buildings, industry and electricity.

Although RF’s focus is on the U.S., the lessons can be applied anywhere and everywhere. The good news only gets better.

SMALL PEOPLE POWER

There is no need for the rest of us to wait on the sidelines while Business gets its profit-priorities in gear. Plenty of revolutions – maybe most – start with “the small people,” as English-as-a-second-language-challenged BP Chairman Carl-Henric Svanberg dubbed us.

In addition to seeking out energy-smart products, insulating our homes and lobbying for more and better public transportation options, we can begin to think more about what we eat and where it comes from.

Much of what appears an America’s dinner plates took thousands of miles to get there. Calves born in Florida might be “finished” in a feedlot in Nebraska and shipped as hamburger to a grocery story in Illinois. Fresh fruits and vegetables are no longer about the bounty of season, but flight logistics. The loss of shrimping in the Gulf from the oil spill doesn’t only mean lost jobs, it means more imports from overseas.

From running farm machinery, to inputs for pesticides and herbicides and, of course, shipping, an enormous amount of fossil fuel goes into food. It is time we put a fork in it: “Small people for locally or regionally-produced food!” If we can up the percentage to just 25% of our collective plate, not only would it force a change in production logistics, but we would be healthier for our efforts. A lot of vitamins get lost in transit…

The urban agriculture movement, which puts farms in the middle of cities, shortens the loop about as much as it can be shortened. As pioneered by MacArthur fellow Will Allen at Milwaukee- based Growing Power’s flagship farm, fish can be added to the harvest through a closed loop aquaponics set up where plants filter water while fish fertilize plants (see TrackerBlog post: “The Farm Next Door”).

BP: BEYOND PROPOGANDA

In a recent interview with the New York Times, the wife of a Gulf coast oil worker spoke about her conflicting feelings between the need for  jobs right now and the high environmental costs of drilling.

“I mean, eventually we might figure out a way to switch over to something else for us to use for energy,” she said. “But is it going to be affordable for everybody?

If we remain loyal to oil, it is a sure thing that it will not be affordable for all. There is simply too much global competition, too much geopolitical risk and no deadline for “eventually.”

Jon Stewart / "The Daily Show": Presidents promising energy independence...

Imagine what the present would have looked like if Nixon (!) had delivered on his promise for energy independence by 1980. Or his successors been a bit more successful pushing green alternatives. What wars might have been averted? What industries would be creating jobs? What would Nigeria look like? And what hole in the ocean floor wouldn’t be gushing?

There is no time left for “eventually.” You want that better future back? Let’s go get it.

RELATED READING/VIEWING:

• TEDxOilSpill: June 28, 2010 – livestreaming from Washington D.C.

• “The Spill, the Scandal and the President” by Tim Dickinson, Rolling Stone

• “Obama’s Sherriff” by Tim Dickinson, Rolling Stone

• “Far From Gulf, a Spill Scourge 5 Decades Old” by Adam Nossiter, New York Times

• “Energy (R)evolution: A Sustainable World Energy Outlook” - Greenpeace website / pdf report

]]> http://trackerblog.trackernews.net/2010/06/20/the-future-fossil-fuels-are-so-yesterday/feed/ 0 J.A. Ginsburg Bookmark and Share oiltedxoilspill oilpresdailyshow http://trackerblog.trackernews.net/2009/10/27/poptech-2009-take-aways/ http://trackerblog.trackernews.net/2009/10/27/poptech-2009-take-aways/#comments Tue, 27 Oct 2009 15:58:55 +0000 J.A. Ginsburg http://trackerblog.instedd.org/?p=977 ]]>

It was a wonderful little bubble while it lasted. Getting up before dawn. Dressing in easy-to-peel layers for whatever the day might bring. Walking over to Boynton-McKay, a diner of rare perfection, where the wi-fi was as reliably good as the pancakes (a boon in connectivity-challenged Camden…) Ascending the stairs and more stairs of the town’s famous 19th century Opera House. A few minutes to mingle-navigate among tables of nibble-food before settling down for a morning of things worth thinking about.

But first, a little music. Logan Richardson’s soulful, playful, questioning sax riffs on “America the Beautiful” one day. Zoe Keating’s clear, deeply layered, architecturally precise, transcending cello pieces another. How lovely to start each day by not thinking. Just being. In the moment. Together. Brilliant.

And then it was off and running, from economics to education, urban decay to urban agriculture, environmental catastrophe to conservation hope, design theory to food design, cardboard robots to paper diagnostics, communications to comics, art to dance to music. To, to, to…

But as the last note of the Mark O’Connor-anchored jam session finale faded into festive applause and we trundled off in buses through the rainy dark to a cavernous transportation museum for one last party, the bubble had begun to weaken and thin. Faces, now familiar, circled by against an improbable backdrop of vintage automobiles, sci-fi bicycles and disconcertingly disembodied airplane parts.  A few final conversations and business cards. Some hugs and toasts. Promises to keep in touch, follow up, finish that thought. We stayed up until we couldn’t. By morning, the bubble was lost in the dazzling clarity of a New England fall day. One by one we left the the small town – Maine’s answer to Brigadoon – journeying back to the chaotic urgency of our daily lives. With each mile down the highway to Boston, and each minute in the sky back to Chicago, I could feel experiences recasting into memories, ready for sorting and analysis.

TAKE-AWAYS

Throughout the conference, Michelle Riggen-Ransom, Rachel Barenblat, and Ethan Zuckerman were absolutely brilliant live-blogging the talks and I recommend reading their posts, along with Kristen Taylor’s, on the PopTech blog to get a more detailed view of goings on.

Among the overarching themes: the serendipity of the amateur and the common sense of a cross-disciplinary approach. In short, the easiest way to see outside the box is to be outside the box.

Take, for example, the tale of the $12 computer (can be haggled down to $10). PopTech 2009 fellow Derek Lomas, who was working in India on”ethnographic design research on uses of mobile phones in urban and rural contexts,” found just such a miracle browsing a crowded electronics marketplace. It’s bare bones – hooks up to a television for a screen and runs on the 8-bit chip that powered 1980s-era Apple II computers and Nintendo game systems. So “vintage” is the tech, patents have run out, making it, for all intents and purpose, open source. Funded by a $180,000 MacArthur grant, Lomas and his collaborators the Playpower Foundation are developing software that combines educational aims with game-playing appeal. “It occurred to me that if this platform had just a few decent games, and one good typing game, it could be economically transformative,” notes Lomas, “because touch-typing can make a difference between earning a dollar a day or a dollar an hour.” Why invent an answer from scratch when you can assemble one cheaper? Innovation through shopping…

______________________________

Another theme: The most effective way to to trigger change is to provide a better alternative to the status quo.

For preventive medicine pioneer Dean Ornish, the shift from the “fear of dying to the joy of living is the key to the healthier future. For materials scientist Neri Oxman, it is moving from a Miesian reality where each building material has a specific function (steel for support, glass for light) to one inspired by Nature, where a single material yields a range of benefits (e.g., the structure of an egg shell evolved to provide strength as well as gas permeability). For clinical psychologist, Naif  Al-Mutawa, it is tackling Muslim stereotypes through the compelling comic book stories of Muslim superhero kids (“The 99″). Better is better.

MIT architect Sheila Kennedy, who has helped spearhead PopTech’s portable lighting project, points out the importance of opening up a space to new ways of thinking.  FLAP – Flexible Light & Power – is a Timbuk2 messenger bag outfitted with small solar array, battery and LED. A removable panel lined with reflective material amplifies the light from a tiny bulb cleverly tucked into a strap. AfriGadget’s Erik Hersman recently took some prototypes to Africa for field testing. But no matter whether a bag design turns out to be a viable answer or not, the thinking has shifted: Solar is not just for roofs and calculators any more. Now you can literally wear power on your sleeve.

______________________________

photo: Growing Power

Which segues into a third theme: Just add sunshine. Three ideas presented at the conference that are either dependent upon or inspired by photosynthesis have the potential to help significantly move the dial on climate change.

• Will Allen is a teacher and an inspiration for the potential of urban agriculture. His suite of Growing Power farms in Milwaukee and Chicago are designed as a series of nested ecosystems. Vermicomposting – turning garbage into wildly fertile worm castings – is the lynchpin. You start by creating soil so rich, it doesn’t require petro-based chemical additives.  From aquaponics set ups to raise fish by the thousands to a biodigester for converting food waste into energy, everything that can be harvested or recycled is. It is cleaner, healthier, oil-independent food system, with local “farm to fork” distribution networks designed to turn urban “food deserts” green.

• Willie Smits has plans for a similar polyculture fix, only rainforest-size. Trained in forestry, Smits career took a turn when he came across a sick orangutan in a Borneo market. Saving orangutans meant saving habitat, an increasingly difficult task when easy profits for palm oil led to wholesale conversion of ancient forests into modern superficially-efficient monocultures. Beyond the staggering loss of biodiversity, forest clearing fires, especially in peat-land forests, have led to “CO2 volcanoes,” spewing vast amounts of sequestered greenhouse gases skyward. Smits’ fix centers around the sugar palm, a short tree common in second-growth forest, which thrives only when grown as part of a polyculture and has a talent both for sequestering carbon (deep roots) and gushing a liquid that can be turned into sugar or ethanol. Smits has come up with a way to process the quick-to-ferment “juice” efficiently off-site. With the “juice” as the economic anchor, a suite of other forest products can also be sustainably harvested. Recently Smits set up a company, Tapergy, to implement his ideas. Notably, both Smits and Allen focus on jobs. Commodity monocultures destroy jobs and communities. Urban agriculture and tropical agroforestry create them.

• Chemist Daniel Nocera, by contrast, doesn’t want to raise plants but mimic them to generate vast amounts of energy. His epiphany: Plants routinely rebuild the mechanisms for splitting water in their leafy “fuel cells.” Scientists’ decades-long quest to find stable catalysts was not only futile but utterly misguided. Instead, his lab developed a resilient catalyst that could rebuild itself, making it possible to create both a better, cheaper fuel cell and process dirty water into drinkable water.

NEXT…

Perhaps the most exciting announcement at the conference was about a new fellows program for scientists, which takes us back to cross-disciplinary common sense. As the speaker list already demonstrates, science is an essential part of creating change for the greater good.

The further promote and support collaborations, some suggestions:

1) Develop a session or a workshop focused on tech transfer, focusing on both the legal and marketing angles.

2) Add data visualizations to the program and on the website showing connections between speakers. With such a multi-disciplinary list, connections transcend program groupings.  For example, Smits could just as logically been grouped with Michael Pollan and Will Allen.

3) Open the PopTech Creative Reuse Workshop at 8 a.m., one hour before the conference. Put out coffee as bait for early risers. I completely missed the workshop. The daily speaker sessions tended to go long, so there wasn’t much time to scoot over afterward. During breaks, the tendency was to mingle, network and nosh on site. Restaurants chosen for lunches were all located in the opposite direction.

4) Develop an online book store search-able by title, author and subject.

Now to wait for the videos to post, just in time for the long winter cozy season…

Blame it on the birds. And the elephants, lions, biochar, Indonesian agroforestry, dirt batteries, mechanical caterpillar waves, global maps, messenger bag-cum-lighting systems, a cyber-dance experience and one very lovely essay about migration. But not too far into the first day of PopTech, the conference’s “Reimagining America” theme disappeared. Which was fine. It seemed too limited for a confab about Big Thoughts, even here in a small, charming  American town (that could use a little reimagining itself – connectivity way, way too spotty). In any case, you can’t really reimagine, or even imagine, America without including the rest the world in the equation.

And nobody brought that point home with more heart-wrenching eloquence than Chris Jordan with his slide show of photographs of dead albatross on Midway Island, killed by a diet of plastic from the Great Pacific Garbage Patch.

Photograph after photographs of birds, heads twisted by pain, guts split by a bounty of all too familiar bottle caps – perky shades of reds and blues favored by marketers – had the audience in shock and *this* audience in tears. This wasn’t an isolated occasional bird tragedy, but the picture of a extinction-in-progress. And because it took so darn long for anyone to discover the Garbage Patch, a ghostly-insidious man-made chemically-enhanced primordial soup the size of at least a couple of Texas’s (Texi?), it is far too late to do much about it – at least for the albatross (“Midway Journey” project blog – notes & videos).

Which doesn’t mean we shouldn’t try. Save the microbes! Save the plankton! Save the food chain!  Who knows? We might just save ourselves, too.

_____________________

The day was filled with jolts of Overwhelming Problems paired with Glimmers of Hope.

John Fetterman, the myth-come-to-life mayor of Braddock, PA, a bankrupt rust-belt town that had been all but written off. A strikingly tall bald figure, with dates tattooed on his massive arms to remember the victims of violent crimes (thankfully, no new tattoos in over a year), Fetterman’s unvarnished recitation of all that had gone wrong coupled with some very basic ideas of what can be done had the crowd on a can-do upswing. Renovate those $5,000 homes (average price – since the recession, they’ve lost value). Add artists. LOTS of artists. Plant urban gardens. Hold lots of family-friendly it-takes-a-village-to-make-a-village. Clear debris and make a park. Then came news of a major hospital closing, which will not only take jobs from the area, but leave the population – mostly poor and minority – in a health-care desert. It is hard to make money taking care of poor people. So much for the greater public good or, for that matter, public health.

I began to wonder whether some of the health solutions being tested in the developing world -  many driven by cell phone tech – wouldn’t be appropriate here, too? (e.g., PopTech Fellow Josh Nesbit’s FrontlineSMS: Medic & Hope Phones).

Indeed, one of the conference’s most intriguing themes to emerge so far is this concept of two-way innovation: developed to developing world and vice-versa. (Note to makers of One Laptop Per Child: I really really REALLY want one of those computer screens designed for use in full sun…)

_______________________

On the Glimmers of Hope front, the PopTech Fellows were batting it out of the park. From Jason Aramburu‘s efforts to commercialize biochar, a carbon negative solution that also improves soil fertility, to Eben Bayer’s nifty mushroom-mediated compostable alternative to landfill-choaking styrofoam, Aviva Presser Aiden and Hugo van Vurveen’s “dirt batteries” and Emily Pilloton’s no-nonsense determination to enlist an army of young designers to come up with Better Answers, there was a sense that it’s still not too late. We can, just maybe, turn this thing around and not go down the climate change tubes.

FLAP – Flexible Light and Power – a prototype of a portable lighting system stitched into a Timbuktu messenger bag – also caught the crowd’s imagination. Designed by MIT’s Sheila Kennedy, it’s a simple idea that could radically change the way we think about solar deployment, opening up the space to all kinds of new ideas. No longer would solar be consigned to rooftop panels or a strip on a pocket calculator. It can almost literally be woven into the fabric of our lives, turning us into portable “plants,” photosynthesizing as we go about our daily business. (More from Erik Hersman on field-testing the design in Africa.)

Indonesia-based Willie Smits also has big plans for photosynthesis, with a scheme that would not only reforest the world’s rain forests, but generate jobs and an array of crops, supply power to poor villages, restore biodiversity and wildlife habitat and dramatically reduce demand for foreign oil. Smits “Tapergy” plans is an integrated system that works with Nature to increase the productivity of land while capping CO2 “volcanos” that result when millions of acres of land, particularly peat-lands, are cleared from monoculture oil palm plantations. (read more about Smits work in “Trees for Trees” post – page down to section on “You Had Me at Organgutan” – includes videos)

There was much more to Day 1. But Day 2 is about to begin. So, connectivity willing, follow on twitter: #poptech / @trackernews.

CFLs (compact florescent light bulbs) may have become the symbol for greener lighting over the last couple of years, but  LEDs — those ubiquitous light emitting diodes on everything from digital alarm clocks to laptops — are poised for a global come-from-behind take-over. The key stumbling point has always been the cost the production. That’s about to change.

LEDs  use only a tiny fraction of the energy needed by florescents and can last a decade or longer, but manufacturing complications require the use of sapphire, a rare and expensive material. Now research at the University of Cambridge promises a super-cheap alternative. Once that pesky little problem is solved, CFLs — and their inconveniently un-green mercury residues — will soon go the way of….incandescents.

(The EPA’s clean up guidelines for broken CFLs are Hazmat-thorough and energy intensive, which begs the question why anyone living in an earthquake-prone area, or with young children in the house, would want to use them.)

Despite high costs, though, there is strong and growing demand for these energy-miser bulbs both the developing world where the electric grid has yet to reach, and in the developed world where grid-liberation is the goal.

SOURCES & STORIES

Below is a round-up of links that have been featured on the TrackerNews site:

• Light Up the World Foundation: Started by University of Calgary professor Dave Irvine-Halliday, LUWF has pioneered the installation of LED lighting units in the developing world that are powered by renewable sources (solar, wind, even pedal power). The goal is two-fold: bring light to some of the 2 billion people without electricity and provide an alternative to smokey, dangerous, ineffective kerosene lamps. “The Man Who Lit Up the Mountains” is a short video about LUWF and its first project in Nepal.

• The Lumina Project: This is an extremely rich resource for field research and reference materials — a must-visit site. Be sure to check out their collaborative partners for more good leads (e.g., Lighting Africa).  “Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya,” published last December, is typical of the thoroughness of their field work. It looks at everything from efficiency to consumer price-point sensitivity (~$15, btw). Even the best technology isn’t worth much if it doesn’t address barriers to adoption.  

• d.light: A start-up with momentum, that’s grown from an idea in a social entrepreneurship class at Stanford, to a company with a factory in China and sales offices in India and Tanzania, with an impressive list of investors. They sell two styles of LED lights, both of which can be recharged using solar or AC grid power. The Nova series is a hand-held super duper flashlight, while the Solata is a small, rather stylish table light. As par of their mission, d.lights offers a fellowship program to work in Shenzhen or New Delhi (February 15 is the deadline for 2009 applications;  a global photography fellowship has a “rolling application”).

• One Million Lights Foundation: Inspired by a school started by her father in rural India over 40 years ago, Anna Sidana founded OMLF to help improve education in regions of the world where a lack of electricity makes it impossible for children to study at night. These children generally work after school, so study time is precious. Last December, eBay chipped in for 15,000 MightyLights, which, like d-light Nova lamps, are industrial strength flashlights that can be recharged with a solar panel. (Sidana’s day job is Director, Financial Products for PayPal, which is owned by eBay.)  Here is a video of her presenting the first delivery to her father’s school.

• LEDlights.org Resources page: All kinds of good leads for articles, reviews and products

• Dean Kamen’s North Dumpling Island, aka “The World’s First LED Nation”: In an effort to bring  energy needs down to levels supportable by off-grid power generation, Kamen switched to LEDs for the nation’s three buildings and mini-Stonehenge installation. Although the change was pricey, costing tens of thousands of dollars, energy use was halved, even after adding outdoor lighting.

• The Solar Tree: This is what happens when a design aesthetic gets added to the equation. Ross Lovegrove, a.k.a. “Captain Organic” (see TED talk) turned street lighting into public gathering place. During the day, the tops of the Solar Tree’s leaves do what real tree leaves do: soak up the sun’s energy. At night, the leaves LED-laced bottom surfaces shed light.

PHYTOPHOTONICS

LEDs aren’t just for humans, either. Plants are partial to them, too, particularly the red and blue ones. Light color affects everything from leaf shape to chemical content to flowering times, so botanists are keen to see if they can use LEDs to manipulate plant development.

A prototype LED greenhouse is being built in Denmark. The expected energy savings are so dramatic, installation costs could be recouped in just three years. Sensors dim or brighten the lights to accomodate passing clouds, keeping plant light intake constant. It is also easier to harvest waste-heat from LEDs than from florescent lights, which can then be used to warm irrigation water.

It a world too full of dark news, LEDs literally are a beacon of light.