Lessons Learned from Halving Energy Consumption at the DECC
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Lessons Learned from Halving Energy Consumption at the DECC

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A case study showing how major reductions in energy use and carbon reduction were achieved in a busy office building.

A case study showing how major reductions in energy use and carbon reduction were achieved in a busy office building.

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Lessons Learned from Halving Energy Consumption at the DECC Lessons Learned from Halving Energy Consumption at the DECC Presentation Transcript

  • Energy Solutions 2012 – the Energy Academy11 October 2012Living up to the Name:Lessons Learned from Halving EnergyConsumption at the Department of Energy &Climate ChangePaul van Heyningen, Head of Sustainability & Estates, DECC
  • 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-effectively2
  • DECC’s estate3
  • The starting point...4
  • ... which did not go un-noticed The Observer Sunday 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.5
  • 14 May 2010, DECC HQ 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.6
  • Total energy consumption on DECC’s estate 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 2010/117
  • Total greenhouse gas emissions from 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 2010/118
  • Display Energy Certificates (DEC)3 Whitehall Place December 2008 July 2012
  • Display Energy Certificates (DEC)55 Whitehall April 2011 January 2012
  • How did we do it?11
  • 1.Not using energy when its 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 switches12
  • 2. New kit • Variable speed drives • Boiler improvement • LED lighting • Kitchen heat recovery • Dedicated IT chiller13
  • 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 project14
  • 4. Behaviour change • Holiday floor closures • Real-time display • CarbonCulture project15
  • Whats next? • BMS automation • More variable speed drives • Extension of lighting controls • More LED lighting • Solar film • Radiator panels16
  • What about renewables?17
  • Costs and benefits • Spent around £500,000 to end 2011/12 • Energy savings around £156,000 in 2011/12 • Overall Pay-back under 4 years18
  • 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 success19
  • 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 “Heres a bright idea on saving the environment.... Turn off the light thats ALWAYS on outside the Department of Energy”20
  • Questions? paul.vanheyningen@decc.gsi.gov.uk21