Waste, water, and energy benchmarking and conservation opportunities for Minnesota hotels
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Waste, water, and energy benchmarking and conservation opportunities for Minnesota hotels

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Potential waste, water, and energy savings were identified for hotel properties in Minnesota. Average resource use footprints and benchmarks were generated after analysis of utility bill data.

Potential waste, water, and energy savings were identified for hotel properties in Minnesota. Average resource use footprints and benchmarks were generated after analysis of utility bill data.

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Waste, water, and energy benchmarking and conservation opportunities for Minnesota hotels Waste, water, and energy benchmarking and conservation opportunities for Minnesota hotels Document Transcript

  • Solid  Waste  Water  Electricity  Natural  Gas  Lighting,  41%  Guestroom  HVAC,  22%1  Indoor  Pool  HVAC,  13%2  Common  HVAC,  10%3  Other,  14%4  Average  Electricity  Use  Footprint  General  Water  Heating,  42%1  Indoor  Pool  Water  Heating,  17%  Indoor  Pool  HVAC,  13%2  Laundry,  11%3  Common  HVAC  &  Other,  17%4  Average  Natural  Gas  Use  Footprint  General,  74%2  Irrigation,  26%1  Average  Water  Use  Footprint  02004006008001,0001,2001,400I R F AA O Y N B T C Z L X A J E Q H K D G U P S V M WEconomy Extended  Stay Midscale UpscaleAnnual  Natural  Gas  Use  Benchmarks,  by  Market  Segment  [therms/(year  *  %  occupancy  *  #  rooms)]    -­‐  5,000  10,000  15,000  20,000  25,000  30,000I R F O B T N Y AA A J L Z E X C Q D H U G K W S M V PEconomy Extended  Stay Midscale UpscaleAnnual  Electric  Use  Benchmarks,  by  Market  Segment  [kWh/(year  *  %  occupancy  *  #  rooms)]    -­‐  10,000  20,000  30,000  40,000  50,000  60,000  70,000  80,000I R F O Y AA T B N U L E A C J D Q H Z X G K P V W S MEconomy Extended  Stay Midscale UpscaleAnnual  Water  Use  Benchmarks,  by  Market  Segment  [gallons/(year  *  %  occupancy  *  #  rooms)]    Introduction  Provided  32  site  visits  and  1  intern  to  hotel  properties  in  Minnesota.  Identified  opportunities  for  waste  and  water  reduction  and  energy  efficiency.  Analyzed  27   average  resource  use  footprints  and  benchmarks.  Obtained  additional  original  data  through  collection  of  nameplate  information,  surveys  completed  by  hotel  managers,  and  by  visual  inspection  during  site  visits  and  internship.  Focused  primarily  on  low-­‐cost  opportunities  for  resource  conservation.  Explored  a  handful  of  larger  capital  investment  projects  that,  if  implemented,  would  bring  more  significant  resource  and  cost  savings.      Results  Potential  Savings  Identified:  268,800  pounds  solid  waste  9.8  million  gallons  water  7.2  million  kWh  electric  energy  702,100  therms  natural  gas  energy  Representing  a  combined  cost  savings  to  our  clients  of  $1  million    Savings  Implemented  to  Date:  10,000  pounds  solid  waste  539,200  kWh  electric  energy  215,000  therms  natural  gas  energy  Representing  a  combined  cost  savings  to  our  clients  of  $132,700      Scope      Properties  ranged  from  40  to  400  guestrooms;  average  98.  27  properties  provided  two  years  of  historical  utility  consumption  data  used  to  generate  the  water  and  energy  use  footprints  and  benchmarks.  1  waste  sort  was  conducted  to  estimate  solid  waste  makeup.  The  annual  resource  benchmarks  are  normalized  by  dividing  the  resource  total  by  the  number  of  rooms  and  average  occupancy  rate  to  allow  meaningful  comparisons  of  relative  resource  efficiency  across  the  properties  analyzed.  Electricity  Conservation  Opportunities    Average  per  Property  Recommendation  Annual  Energy  Savings  (kWh)  Annual  Cost  Savings  Implem.  Cost  Payback  Period  Replace  incandescent  lighting  with  CFLs  or  LEDs  38,000   $2,700   $1,500   7  mo.  Install  occupancy-­‐sensor  power  management  on  vending  machines  4,900   $430   $560   16  mo.  Use  pool  covers  to  reduce  indoor  pool  cooling  and  dehumidification  86,000   $6,900   $16,300   16  mo.5  Install  occupancy-­‐sensor  power  management  on  guestroom  HVAC  112,000   $9,000   $28,900   39  mo.  5Payback  period  reflects  natural  gas  savings  in  addition  to  electric  savings.  Water  Conservation  Opportunities    Average  per  Property  Recommendation  Annual  Water  Savings  (gal)  Annual  Cost  Savings  Implementation  Cost  Payback  Period  Install  low-­‐flow  faucet  aerators  (reduction  of  0.5  GPM)  38,500   $59   $46   9  mo.  Install  low-­‐flow  shower  heads  (reduction  of  0.5  GPM)  109,400   $220   $770   42  mo.  Install  low-­‐flow  toilets   254,800   $510   varies   N/A  Natural  Gas  Conservation  Opportunities    Average  per  Property  Recommendation  Annual  Energy  Savings  (therms)  Annual  Cost  Savings  Implementation  Cost  Payback  Period  Reduce  laundry  dryer  run  time  by  5  minutes  5,200   $4,200   $0   Immed.  Use  pool  covers  to  reduce  indoor  pool  heating  load  7,000   $5,600   $16,300   16  mo.5  5Payback  period  reflects  electricity  savings  in  addition  to  natural  gas  savings.  Waste,  Water,  and  Energy  Benchmarking  and  Conservation  Opportunities  for  Minnesota  Hotels  1All  properties  used  in-­‐guestroom  packaged  terminal  air  conditioners  (PTACs)  with  electric  resistance  heating.  2Amount  of  electricity  used  by  dehumidification  and  space  cooling  in  indoor  pool  areas.  3Space  cooling  and  ventilation  in  all  other  areas  other  than  guestrooms  and  pool  area.  4Includes  all  other  uses  of  electricity,  for  example,  plug  loads  for  guestroom  amenities,  business  center  computers,  exercise  equipment,  laundry  systems,  etc.    1Irrigation  sub-­‐meter  data  not  available  at  all  properties.  2Due  to  lack  of  additional  sub-­‐meter  data  or  methods  to  estimate  than  for  irrigation.  1Includes  water  heating  for  guestrooms  and  laundry  washing  machines.  2Space  heating,  ventilation,  and  air  makeup  in  indoor  pool  areas.  3Natural  gas  used  in  laundry  drying  machines.  4Includes  space  heating,  ventilation,  and  air  makeup  in  hotel  common  areas  and  all  other  unidentified  uses  of  natural  gas.  Solid  Waste  Conservation  Opportunities    Average  per  Property  Recommendation  Annual  Solid  Waste  Savings  (lbs)  Annual  Cost  Savings  Implementation  Cost  Payback  Period  Replace  disposable  amenity  bottles  with  bulk  dispensers  3,900   $3,200   $2,500   9  mo.  Additional  Opportunities  Observed:  Start  an  in-­‐house  or  externally  managed  organics  collection  program  to  reduce  the  amount  of  food  waste.  Start  in-­‐room  recycling  collection  program  to  reduce  the  amount  of  recyclable  materials  going  to  waste.  Estimated  to  divert  an  average  of  34,000  lbs.  annually  from  landfills,  per  property.  44%  10%  9%  1%  1%  1%  0%  2%  1%  0%  31%  Waste  Sort  Results1  Organics Glass Office  Paper NewspaperMagazines Cardboard Mixed  Paper PlasticSteel Aluminum True  Trash1Waste  sort  conducted  at  one  hotel  property  only;  unlike  energy  and  water  use  footprints  these  results  are  not  meant  to  represent  averages.  Historical  Solid  Waste  Data  Unavailable,  Solid  Waste  Benchmarks  Not  Generated