Pratt & Whitney's turbine module factory in East Hartford, Conn., makes some of the most advanced jet engines in the world. The factory floor comprises more than 10 acres of sophisticated American engineering. Metal parts are machined to tolerances as small as ten-thousandth of an inch, then processed and coated to function smoothly at temperatures above the metal's melting point. One day last week, however, several company executives and a reporter gazed not at the marvels around them, but up. Way up. At lightbulbs.
"It's not rocket science," says Mark Kopera, apparently without irony. Kopera is Pratt & Whitney's manager for energy services operations -- in English, the company's energy czar. Gesturing overhead, he points out an admixture of bulbs. Most of the lights bathing the factory floor in daylight-strength illumination are incandescent globes, which, Kopera says, consume 450 watts each and generate intense heat at the bulb's surface; some, however, are fluorescent tubes of a new sort, which consume only 250 watts and run cool. If the new fluorescents can shed enough light on their subjects, this factory and others will be converted to fluorescent fixtures.
Pratt & Whitney is a division of United Technologies, a Fortune 50 company with almost $48 billion in revenues last year. I wonder aloud: Are lightbulbs a bit picayune for a big multinational unit of an even bigger multinational conglomerate? To the contrary, says Kopera. Lighting is a "humongous" cost, accounting for a third of the company's power bills. "We're all about saving money here," he says.
U.S. environmentalism has come a long way since the corporate-bashing of the 1960s and '70s; but even today, to listen to many environmentalists talk, you would assume that capitalism is the enemy of conservation. Doesn't the profit motive encourage a throwaway culture? Doesn't commercialism breed waste? Not necessarily, and no. Lightbulbs are examples of why.
"Basically it's waste elimination," George David, the chairman and CEO of United Technologies, said in an interview last week, when asked about energy conservation. Like a lot of manufacturing companies, United Technologies finds itself under pressure to cut costs, and energy is a costly input. Moreover, David foresees an energy-short world for decades to come, as China and India, among other rapidly developing countries, create new surges in demand. Alternative fuels, he says, will eventually bring relief, but not on a sizable scale for decades to come. But conservation works right now and is, economically speaking, "exactly like renewable energy."
In 1997, the company launched a 10-year program to reduce emissions and resource use, both to clean up its environmental act (it had been hit with a federal fine) and to save money. Between then and last year, it reduced its energy consumption by almost a fifth, even as its revenues more than doubled. American manufacturing is rife with similar stories. According to the Energy Information Administration, energy use in the U.S. industrial sector in 2005 was below its 1979 level, despite a near-doubling of output.
How was it done? Set aside romantic notions of exotic fuels and technological silver bullets. "It can be as simple as filter replacement," Kopera said. Rick Bennett, United Technologies' vice president for environment, health, and safety, said: "There were hundreds of projects. We identified the big users, and we just attacked."
At Pratt & Whitney, that meant turning off machinery and
lights when they weren't being used. It meant restacking production
cycles to keep fewer furnaces in operation at any given moment. It
meant buying new machinery and keeping older equipment in better
repair. It meant measuring and charting energy use, tasking middle
managers with conservation goals, and grading them on the results.
It meant consolidating plants and using lean production to shrink
factories; the East Hartford turbine center, for example, is less
than half the size of a factory it replaced, and it produces
And conservation means taking the waste out of waste heat. United Technologies expects to spend $100 million over the next three years installing "co-generation" at its facilities, with the goal of doubling energy efficiency. Just what co-generation means is on display in East Hartford, at the factory's central powerhouse.
There, a gas-fired turbine generator pumps out 30 megawatts of power -- and a gale of scalding exhaust air, 800 degrees Fahrenheit. Depending on the time of year, this freestanding generator can provide all or most of the plant's energy, cutting the plant loose from the electrical grid. More to the point, the turbine's hot exhaust would once have been vented into the atmosphere but now is blown through a boiler, heating water to produce 95,000 pounds an hour of steam. That steam, in turn, heats buildings in the winter, powers air conditioners in the summer, and drives air compressors.
"The goal," says Kopera, standing in the powerhouse control room, "is to use all the steam, and right now we're just about there." Unused steam, after all, is "wasted energy. If you vent it, you've had to burn BTUs to create it." This summer's cooling months, he says, will test whether the plant can economically put all of its waste heat to work.
The word "economically" is significant. If the price of natural gas spikes and the price of grid power falls, the plant can switch over to conventional utility-provided electricity. "If it makes sense to use waste steam, we can do it," Kopera says. "If it makes sense to use electricity, we can do it. It's based on an economic calculation." What the company is buying is flexibility, which, in a world of volatile energy prices, saves money.
At another plant in nearby Middletown, a co-generation system is under construction this year. When the new system is finished, the plant will derive two-thirds of its electricity and three-fourths of its steam from waste heat. The power bill will drop by about $75,000 a week. The $13 million up-front investment will take about five years to pay for itself.
"Five years is a long number for us," Kopera says. A five-year payback is about as far as the company is willing to stretch (non-environmental investments are generally required to earn out in more like three years). But there are still some easy savings lying around to be picked up. In Middletown, Kopera displays a new tank system that evens out the flow of compressed air to the factory floor. That allows the plant's air compressors to turn on and off less often, shaving the compressors' electricity bills by 10 percent or more. Payback: 1.5 years.
"There's still a great deal of low-hanging fruit," says David, the United Technologies CEO. In a speech in Washington last fall, he announced that America, if it tried, could reduce its energy consumption by 10 percent "in one year flat." He did not appear to be on drugs at the time. One-year savings of that magnitude, he acknowledged in our subsequent interview, would be hard to repeat in subsequent years, but smaller, incremental reductions "can go on forever."
Over the past 10 years, he notes, United Technologies has reduced its energy use about 2 percent a year. Between now and 2010, it aims to reduce energy use even faster. Doing that while "maybe growing the business at 6 percent per annum is a huge goal that we don't exactly know how we're going to meet," he says.