PricewaterhouseCoopers: Chopped carbon footprint by 20% in two years
Wow-factor projects mixed with smart changes to everyday tasks make this Big Four accounting firm, ranked No. 1, a leader in green-IT initiatives.
Computerworld - Where do you start when your company demands a 20% reduction in its carbon footprint? At PricewaterhouseCoopers, it wasn't enough to just pursue high-profile projects, such as building the LEED Gold-certified data center that came online in January.
It was just as important to come up with grass-roots ideas and make smaller companywide changes, such as rolling out multifunction printers configured with two-sided printing as the default, using longer-lasting print cartridges, promoting videoconferences over in-person meetings and providing a carbon calculator that employees can use to see how their offices stack up against those of their peers -- a tool that helped reduce office energy use by 18%.
"We've hit a lot of the low-hanging fruit," says John Regan, director of data center services. "Now it's about those incremental changes." Those changes, big and small, have added up: In September, PwC achieved its goal, just two years after making the pledge -- and two years ahead of schedule.
PwC's new data center in Georgia has made a significant contribution, reducing power consumption by 20 million kilowatt-hours and cutting operating costs by $2 million -- a 40% savings. The firm realized those savings by virtualizing 2,500 servers, using more-efficient equipment and moving to an optimized hot-aisle/cold-aisle design. PwC also distributes power at 575 volts AC instead of the industry standard 480 (which saved on copper and eliminated some uninterruptible power supply equipment).
KC Mares, president of data center design firm Megawatt Consulting, has installed 575-volt distribution systems, and he says the primary benefit is upfront savings. "It saves on capital costs, but operating cost savings are generally in the area of 1% of less," says Mares.
The new design allowed PwC to raise the temperature of chilled-water feeds into the air conditioning system by 10 degrees, which has translated into an immediate energy savings of 15%. In addition, air-side and water-side economizers drop the mechanical energy consumption of computer-room air conditioning systems by 75% when active, says Bill Panian, PwC's data center facilities manager. In February, the chillers ran just 6% of the time, helping the firm achieve a savings of 100,000 kwh -- an unexpectedly good result.
A monitor in the lobby of the data center building features a live feed that shows energy consumption and the performance of the air-side economizer in real time. Panian says he expects technology advances to allow chilled-water temperatures to continue to rise over time, and that should bring even greater efficiencies.
PwC has also seen a 30% decrease in travel since April, after it pledged during its "Green Week" to plant five trees for every videoconference scheduled. By August, it had committed to planting 4,200 saplings.
The reduction in travel was partly due to the recession, which made videoconferencing an attractive alternative to purchasing airline tickets, admits Shannon Schuyler, PwC's corporate responsibility leader. Will people still opt for videoconferencing once the economy picks up? That will be the real test, she says.
"Our experience suggests that once companies discover videoconferencing, it tends to stick," says Chris Mines, an analyst at Forrester Research Inc. The technology works best for internal or joint team meetings, making it ideal for organizations with far-flung teams, like PwC's consulting business, he says.
And after an energy audit, office workers and management reduced office energy consumption. They also started using double-yield, 20,000-page toner cartridges, which halved the number of cartridges that needed to be recycled.
"It's like a snowball," Panian says. But it was those aggressive carbon-reduction targets that got the ball rolling.
More on Top Green-IT
Read more about Data Center in Computerworld's Data Center Topic Center.
- 15 Non-Certified IT Skills Growing in Demand
- How 19 Tech Titans Target Healthcare
- Twitter Suffering From Growing Pains (and Facebook Comparisons)
- Agile Comes to Data Integration
- Slideshow: 7 security mistakes people make with their mobile device
- iOS vs. Android: Which is more secure?
- 11 sure signs you've been hacked
- HP HAVEn: See the big picture in Big Data HP HAVEn is the industry's first comprehensive, scalable, open, and secure platform for Big Data. Enterprises are drowning in a sea of data...
- Piecing Together the Business Intelligence Puzzle Business intelligence (BI) technology collects and analyzes company data, delivering relevant information to corporate decision-makers in an effort to produce favorable outcomes.
- Harness IT -- An Introduction to Business Intelligence Solutions Learn the key selection criteria required to provide your organization with the capability to address structured data, unstructured data and mobile demands so...
- Business Intelligence Shows its Smarts Today's Business Intelligence (BI) tools provide a new way to think about data with self-service capabilities and user-friendly analytics that can be used...
- Cloud Knowledge Vault Learn how your organization can benefit from the scalability, flexibility, and performance that the cloud offers through the short videos and other resources...
- Testimonial: Cystic Fibrosis Trust Peter Hawkins, the Head of IT for Cystic Fibrosis Trust, discusses the role CommVault's Simpana software platform plays in improving the company's information... All Data Center White Papers | Webcasts