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Living up to the Name: Lessons Learned from Halving Energy Consumption at the Department of Energy & Climate Change
Paul van Heyningen, Head of Sustainability & Estates, DECC
Energy Solutions 2012 – the Energy Academy11 October 2012
DECC is a small department, with a big mission. Our vision is of a thriving, globally competitive, low carbon energy economy.
Our key priorities are to:• Save energy with the Green Deal and support vulnerable
consumers • Deliver secure energy on the way to a low carbon energy future • Drive ambitious action on climate change at home and abroad • Manage our energy legacy responsibly and cost-effectively
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55 Whitehall, London SW1A
3 Whitehall Place, London SW1A
Atholl House, Aberdeen
DECC’s estate
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The starting point...
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... which did not go un-noticed
The ObserverSunday 17 May 2009
“Which ministry is least green? The one that runs climate change”
The DECC, which is responsible for promoting energy efficiency in the country and is housed in Whitehall Place in London, scored a G, the lowest on a seven-point energy performance scale for its buildings.
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Cameron promises “greenest government ever”
Carbon emissions from central government will be cut by 10% in the next 12 months, Prime Minister David Cameron announced today.
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14 May 2010, DECC HQ
Overall 50% reduction in energy use
• In 2009/10 we used 28% less energy than in 2008/09
• In 2010/11 we used 25% less energy than in 2009/10
• In 2011/12 we used 7% less energy than in 2010/11
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Total energy consumption on DECC’s estate
Overall 42% reduction in emissions (CO2e)
• In 2009/10 we emitted 19% less carbon than in 2008/09
• In 2010/11 we emitted 19% less carbon than in 2009/10
• In 2011/12 we emitted 12% less carbon than in 2010/11
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Total greenhouse gas emissions from DECC’s estate
Display Energy Certificates (DEC)
3 Whitehall Place
December 2008 July 2012
Display Energy Certificates (DEC)
55 Whitehall
April 2011 January 2012
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How did we do it?
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1.Not using energy when it's not needed
• Building management system (BMS): rigorous heating and cooling policy no out of hours heating and cooling virtually no out of hours hot water heating
• Occupancy sensing for lighting and ventilation
• Switch off routines and timer switches
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2. New kit
• Variable speed drives
• Boiler improvement
• LED lighting
• Kitchen heat recovery
• Dedicated IT chiller
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3. Green IT
IT chiller:• Cost £91,000• Saves 90 tonnes CO2 p.a.• Saves £20,000 p.a.• Payback 5 years
Energy efficient laptops and monitors
Printer project
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4. Behaviour change
• Holiday floor closures
• Real-time display
• CarbonCulture project
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What's next?
• BMS automation• More variable speed drives• Extension of lighting controls• More LED lighting• Solar film• Radiator panels
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What about renewables?
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• Spent around £500,000 to end 2011/12• Energy savings around £156,000 in 2011/12• Overall Pay-back under 4 years
Costs and benefits
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Take-home lessons
• Building engineering expertise is crucial• Factor sustainability & carbon reduction into contract
renewals• Engage internally and externally
communicate plans consult and pilot projects with staff celebrate success
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There’s always more to do...
The Sun, 10 February 2012
“There is a light that never goes out...at the Department of Energy & Climate Change”
The Daily Mail, 10 February 2012
“Here's a bright idea on saving the environment.... Turn off the light that's ALWAYS on outside the Department of Energy”
