麻豆传媒资源

The solution to rising fossil fuel costs in Nova Scotia is not just blowing in the wind that powers windmills. It will come, says 麻豆传媒资源 Professor Larry Hughes, through a combination of alternative energy sources that need to be developed 脨 right now.

Dr. Hughes, of Electrical and Computer Engineering, believes the people of Nova Scotia need information so they can make good choices and pressure their governments to do the same 脨 otherwise the province faces a very uncertain energy future.

脪Energy permeates everything,鈥� says Dr. Hughes. 脪How we use it is going to affect the provincial economy well into the future. Just about all the energy we use (in Nova Scotia) is imported energy and that makes us extremely vulnerable to price rises, trouble in the Middle East and problems in Russia (where the province gets most of its coal).聽Nova Scotia really is at the mercy of external forces.鈥�

This conviction has turned Professor Hughes into a prolific writer. His web site 脨 - provides a sample of the breadth and depth of his concern. Reports and papers on how to secure a better energy future for the province are posted among dozens of articles and letters to newspapers 脨 about climate change, transportation, the Kyoto Accord and wind energy.

As a leading expert on alternative energy sources such as wind, solar and biomass, Dr. Hughes contends that Nova Scotia Power and the provincial Energy Ministry have made very minor changes during the past 15 years and, contrary to what they are saying publicly, aren脮t exploring anything else. Dr. Hughes contends, for example, that Nova Scotia Power is comfortable with making electricity the way it has for decades.

脪The facilities they have, which are going to last another 10 to 20 years, are designed to burn coal, or to a lesser extent, oil and natural gas,鈥� says Dr. Hughes. 脪That is how they do it. It脮s reflective of larger utilities across North America. If you want electricity, you bring a power station on line. And when they talk about renewables, they talk about wind,鈥� says Professor Hughes. 脪That is just too narrow a focus.鈥�

And he should know. Dr. Hughes and colleagues have done two stages of research under the federal government脮s Climate Change Action Fund. The second phase, in 2002, awarded Dr. Hughes $200,000 for the purchase of three 20 k wind turbines.

脪The original project asked: where is the wind? So we went around the province collecting data,鈥� says Hughes, who was aided by high school groups. The wind turbines are being installed in Glace Bay, Port Hawkesbury and at a site near Windsor. The project is experimental 脨 to see what results they will get 脨 and it also is aimed at raising the profile of wind power in people脮s minds.

But wind is not the only solution, says Dr. Hughes. In fact, it is risky. Turbines are noisy and the wind doesn脮t blow all the time. You have to have something to fill in at the windless times.

For Dr. Hughes, that is biomass. Biomass can include hard and soft woods, agricultural and industrial wastes and waste as humble as sawdust. Mill residue, including sawdust, could supply about 15 per cent of Nova Scotia脮s electricity 脨 a significant contribution, he says.

Dr. Hughes is also a fan of the sun and says Nova Scotia could generate a good amount of solar power. And there is district heat, an energy source that has grown in use in Europe.

For every litre of oil burned at the Tuft脮s Cove power plant in Dartmouth, only a third of it gets turned into electricity. The remaining two thirds are lost and could be captured to heat homes 脩 that is district heat. 脪District heat has been around for 120 years and we should be doing everything we can to encourage it.鈥�

But Dr. Hughes fears that Nova Scotians keep falling for the dream of gushing oil and gas wells. Oil and natural gas potential off Sable Island is oversold, says Hughes, not just as a source of energy, but as a source of riches for Nova Scotia.

脪This is an energy security issue,鈥� says Dr. Hughes. Nova Scotia has to get reliable energy sources at prices that people can afford. That means taking a hard look at everything from sawdust to wind to solar and district heat, wood and industrial waste.

脪I脮ve been beating this drum in Nova Scotia for the past 15 years,鈥� says Hughes. 脪There have been very minor changes made. I think it is important to inform people. I feel an obligation.鈥�