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General Fusion’s plan to rescue Earth from the calamity of global warming involves an ironic feat of physics: How to make a miniature sun and contain it. Yet not even the challenge of bottling the kind of superheated energy powering the centre of our solar system fazes the founder of the Burnaby, B.C., cleantech firm. Asked about the doomsday-dodging promise of his experimental nuclear fusion reactor, company founder and chief scientist Michel Laberge was unequivocal.

What if fusion became commercial? Nuclear fusion, says Stephen Hawking, could “provide an inexhaustible supply of energy, without pollution or global warming”. The technology’s promises are many, but how would the arrival of commercial fusion affect the design of our energy system?

General Fusion's CEO, Nathan Gilliland interviewed by Amanda Lang on the CBC News Network about Lockheed Martin's fusion announcement and the future of fusion technology.

Traditionally, fusion energy research has meant huge efforts like the $20 billion multinational ITER project and $3.5 billion National Ignition Facility. But that may be changing. In unassuming industrial units across North America, Europe, and elsewhere, small teams of scientists and engineers supported partly or entirely by private finance are working out novel approaches to fusion. Their goal: to design financially viable power reactors simpler and cheaper than the government-funded behemoths and to build them faster. Some of the new technologies look bizarre, but venture capitalists are convinced that each holds at least a slim chance of an enormous payoff.

Fuelled by venture capital and a lot of hope, alternative fusion technologies are heating up. Author M. Mitchell Waldrop looks into the basics of nuclear fusion and presents a number of alternative fusion technologies that are pushing towards the goal of commercializing fusion power.

Fusion research is now moving from the whiteboard and academic papers to working reactors. Started in 2002 by a successful corporate scientist in the throes of a midlife crisis, General Fusion has already outlasted past private-sector attempts to commercialize fusion energy. Instead of petering out, it’s garnered the attention and respect of a small but growing cadre of scientists, energy executives and adventurous investors around the world.

Vancouver is a land of scenic harbors, tall mountains and startups trying to harness the limits of physics.

In town for the TED conference, I had the occasion to visit two such companies yesterday:D-Wave and General Fusion. D-Wave, a quantum computing company, is all about the very cold and the rather tiny. It has built enormous refrigerators that each house a single chip, laced with “qubits” that can be in the superposition of both 1 and 0 at the same time and can carry an electric current with no resistance at low temperatures.

"Starting to believe in the eventuality of our success is important" General Fusion, Canada’s most ambitious alternative energy company, hired a new CEO this week. Nathan Gilliland was the founder of Boston-based biomass energy company Harvest Power and more recently served as an entrepreneur-in-residence with Kleiner Perkins Caulfield & Byers, one of the world’s largest venture capital firms.

Sold-out conference promises to provoke and inspire. Michel Laberge, who has made a life’s career out of developing a cheap and environmentally safe form of energy, has a vision that within 10 years the need for hydroelectric dams and coal-fired power plants will be a thing of the past. In their place will be fusion power plants that convert hydrogen into helium extracted from sea water. If that sounds far-fetched, it isn’t. Laberge, a Burnaby-based physicist, is among a handful of privately funded scientists who say they are within striking distance of building a commercially viable fusion power plant.