Identifying Hidden Electricity Waste

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Identifying Hidden Electricity Waste Powered By Docstoc
					          Identifying Hidden
           Electricity Waste

                        Ross Courtney
                      ross@arkee.co.uk
www.arkee.co.uk         01202 237700
    What do I mean by
‘Hidden Electricity Waste’?
                       Metering

– Standard meter
<100kW



– Half-hourly meter
>100kW
(Rough rule of thumb - over £30,000 pa,
  but could be much lower)
                  Metering
• What type do you have?
                     MPAN
      (Meter Point Administration Number)




  Profile Type is ’00’ then Half Hourly, any other
            number then not half Hourly.
                     Found on bills
Non Half Hourly Meter Data
Half Hourly Meter Data
Half Hourly Data
One month Half-Hourly Data
      350




      300




      250




      200
kWh




      150




      100




      50




       0
            00.00-01.00

                          01:00-02:00

                                        02:00-03:00

                                                      03:00-04:00


                                                                    04:00-05:00

                                                                                  05:00-06:00

                                                                                                06:00-07:00

                                                                                                              07:00-08:00


                                                                                                                            08:00-09:00

                                                                                                                                          09:00-10:00

                                                                                                                                                        10:00-11:00

                                                                                                                                                                      11:00-12:00


                                                                                                                                                                                       12:00-13:00

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                                                                                                                                                                                    Time


       Fri 01/09/2006                          Sat 02/09/2006                            Sun 03/09/2006                           Mon 04/09/2006                             Tue 05/09/2006                              Wed 06/09/2006
       Thu 07/09/2006                          Fri 08/09/2006                            Sat 09/09/2006                           Sun 10/09/2006                             Mon 11/09/2006                              Tue 12/09/2006
       Wed 13/09/2006                          Thu 14/09/2006                            Fri 15/09/2006                           Sat 16/09/2006                             Sun 17/09/2006                              Mon 18/09/2006
       Tue 19/09/2006                          Wed 20/09/2006                            Thu 21/09/2006                           Fri 22/09/2006                             Sat 23/09/2006                              Sun 24/09/2006
       Mon 25/09/2006                          Tue 26/09/2006                            Wed 27/09/2006                           Thu 28/09/2006                             Fri 29/09/2006                              Sat 30/09/2006
       Sun 01/10/2006
    Other/Future Techniques
• Smart Meters
• AM&T
• Clip-on Display Meter
What do we use?
Electricity Usage Data
Case Study & Examples
                  Case Study
•   Activities: Public House (medium size)
•   Size: 3 full time staff, 12+ casual
•   Electricity use per year: £25,000 - £35,000
•   Specific Issues: None
•   Other relevant information: Taken as a
    challenge, this pub has one of the lowest
    overnight usage figures in the south area (40+
    pubs). Landlord is energy efficient aware and
    feels there are insignificant savings achievable.
    Note: Already have AMR & display meter.
      Case study: Approach
• 24 hour analysis of usage
• Work with client on day end procedures to
  see if overnight usage can be reduced
  further
Case study: Graphs
    Case Study: Graphs (Ch1)


Before




After
    Case Study: Graphs (Ch2)


Before




After
    Case Study: Graphs (Ch3)


Before




After
                  Example 2
• Activities: Children’s Playgroup
• Size: 6 to 10 staff
• Electricity costs per year: approx £8000
• Specific Issues: Received large bill for electricity
  usage from new supplier, creating a query on
  whether meter was reading correctly
• Other relevant information: Government funded
  energy efficiency organisation had surveyed
  electricity and concluded there was a circa £2K
  difference between usage and billing
         Example 2: Approach


• Perform 24 hour data capture and analysis

• Cross reference to new energy supplier’s
  readings to see if there was a case for meter
  checks/replacements
Example 2: Usage Graphs
              Example 3
• Activities: Restaurant
• Size: 2 Staff (owner/operators) + casual
• Electricity costs per year: Approx £7,000
• Specific Issues: Costs have increased
  more than expected. Owners suspected a
  chilling unit was not working correctly,
  could we verify and help them understand
  the cost implications if faulty
• Other relevant information: None
       Example 3: Approach
• 24 hour electricity data analysis and
  diagnostics
• Individual equipment consumption check
Example 3: Graphs
                  Conclusions
• Overnight usage can be significant
(in these case studies 5%-25% reductions identified)

• Many companies have limited access to
  meaningful data about their electricity
  usage

• It is not always obvious what is wasting
  your energy
Questions?
Thank you for
  listening
     Ross Courtney
   ross@arkee.co.uk
    www.arkee.co.uk
     01202 237700