Customers spend much of their energy budget on heating water with gas (showers, baths) or electricity (washers). Smart water meters can show them how much and when this happens, so they can become more aware and get information on which they can decide to save on water and energy. (Presentation Smart Water Systems, London, April 28th 2014)

1. 1
How smart water meters can
help consumers save energy
Gerrit Rentier
Senior Business Process Analyst
DELTA Energy & Multimedia
London, April 28th, 2014

2. 2
Presentation outline
 Introduction/ DELTA N.V.
 Water conservation and energy use
 The role of (smart) meters and feedback modes
 Smart meters & multi-utility
How consumers’ energy use relates to water and we can
enhance energy saving with targeted information.
 Dutch smart meter requirements
 Proof of concept: putting it to the test
 Consumer response to the concept
 Lessons learned
Technical and organizational lessons, consumer response
 Perspectives compared to Smart Homes market
 Questions

3. 3
Look who’s talking: DELTA N.V.
• DELTA N.V. is a municipal multi-utility company.
Shareholders: Province of Zeeland & local municipalities.
• Production, Trade, Supply B2B of Electricity and Gas
• Largest Dutch player in renewable energy (PPA for
electricity from Gemini wind turbines, 600 MW), also a bio
mass, a nuclear and a natural gas power plant;
• Waste management services (“Indaver”), Water (“Evides”)
• Metering and utility services (nationally)
• Locally; internet, (digital) TV, retail energy and water;
• DELTA Netwerkgroep, maintenance of infrastructure for
water, gas, electricity & cable, incorporating a DSO
• As a municipal multi-utility it is in the nature of
DELTA to focus on added stakeholder value
including sustainability in a multi-utility approach
• We are looking for cost efficiency, innovation, consumer
empowerment & energy efficiency through integrated
offerings; multi-utility, synergy; “Connect” (“verbindt”)!

4. 4
Behavioral conservation programs & water
California water utility East Bay Municipal Utility District saved 5 percent of water
through a behavioral program including Home Water Reports (SmartWater, start up)
Source: “Evaluation of East Bay Municipal Utility District's Pilot of WaterSmart Home Water Reports “ ,
David L. Mitchell, M.Cubed, Thomas W. Chesnutt, Ph.D., CAP™ A&N Technical Services, Inc.
Prepared for California Water Foundation & East Bay Municipal Utility District
April 9, 2014:
Palo Alto program;
SmartWater
partners
with OPower
(NYSE: OPWR)
-home reports
-web portal, history
-water efficiency tips

5. 5
Water heating = 27% energy costs..
If consumers get a
better understanding
of their hot water use
then they can see new
ways of spending less
on energy ..
hot water is second
only to space heating
in savings potential !!
Smart Meter Program KSF #1:
“Design and deploy with the consumer at the heart of the solution…”
 show #1 heating, show #2 water heating, show #3 appliances (washers)

6. 6
New role of utilities  new role of meters

7. 7
Potential of smart meters for conservation
ACEEE report shows up to 9 or even 12 percent conservation for
energy if the information is near real time.
ACEEE report shows up to 9 or even 12 percent conservation for
energy if the information is near real time…
Smart meters can technically enable the first four categories of feedback loops…
“Advanced
meter reading
initiatives and
residential
feedback
programs: A
Meta-Review for
Household
Electricity-
saving
Opportunities”,
American
Council for
Energy-Efficient
Economy
(ACEEE),
Washington,
June 2010

8. 8
Psychological basis: experiential learning
If we present actionable information (“concrete experience”) based on recent smart
meter data that tells consumers where they are spending energy (and money),
leading to observation and comprehension, then they are enabled to try and
save energy and water (“active experimentation”), in heating, hot water, appliances.

9. 9
Connected: multi-utility smart concept
Spending pattern, hot water, washers, smart meters, feedback modes  a test.
Target: see if we can put these ideas in action within the technological setting of the
Dutch Smart Meter Requirements and find out how consumers respond
Personal example
Family situation:
parents + 3 children <7 year
Relation between energy
bill and heating of water:
Gas 30% € 210
Electricity 35-40% € 246

10. Dutch Smart Meter Requirements…
• P1= HAN, IEC 62056-21
(RJ-11 connector, serial protocol);
• P2= wireless MBus, slave meters
• DSO rolls out smart E and G meters
and facilitates consumers & markets
• P0= Maintenance port
• P3= GPRS connection, WAN
• P4= market interface for ESCO’s,
Energy Suppliers (Water companies)
“P1- device”
(Energy management
display, APP, tablet
etc)
P1
G-meter
W-meter
Heat
meter
P2
Central
system
GSM
network
P3
P2
P0
Energy
suppliers
ODA’s
Water companies
P4
P1 =
Consumer port
Customer is in control
“BYOD”

11. 11
Combining E, G & W data for consumers
• Proof of Concept; graphs basic format, 60 minute refresh G & W, N=50
• We can distinguish volumes for gas attributed to heating from volumes
for gas attributed to baths and showers if peaks correlate;
• We can distinguish electricity used for washers & dish washers from
other uses of electricity if peaks correlate;
• Consumers can draw their own conclusions based on near real time
information and act.
(*) short demo movie proof of concept)

12. 12
Consumer response to proof of concept
Without a campaign, brochures or
anything, just 1 letter, still most
consumers are positive (left graph)
and 48% of the consumers have become
slightly more aware of water use
(graph below) (“iets meer bewust”)

13. 13
Consumer response: graphic display
Asked if they were able to distinguish the bigger energy ‘culprits’ from the presented data,
48% of the consumers said “Yes”.
From these findings and from remarks in the questionnaire, we have become convinced
that the response to this concept can be a lot better:
1. if the solution comes with a campaign (a program) and a social media platform;
2. if data for energy and water is shown in one graphical item
on popular devices (smart phones, tablets, lap tops) and
3. if data is more frequent (“near real time”, ACEEE findings, experiential learning)

14. 14
Lessons learned from Proof of Concept
• Commissioning and installation process;
replication of processes and instructions for “gas” to
also cover “water” (or “heat”) is relatively easy
• ICT; replication of data structures & interfaces for
“gas” to cover “water” (or “heat”); relatively easy
• The roll out field tool we have used (“SmarAPP”)
supports “Water” in the same way as it supports “Gas”
without any significant modifications
• Asset Management poses a challenge;
Water-meters have no natural place in the DSO’s ICT
architecture, so; this requires effort & interfaces
• Consumers did generally appreciate the extra data
• Consumers want to see the combined information in one
easy graphical representation, no ‘clicking’ & hassle
• Frequency of 60 minute updates is not very valuable in
terms of “experiential learning”; by the time you notice,
the chance to act on that information is gone

15. (A)
Tradi-
tional
meters
Regulatory
(B)
Smart
meters
Regulatory
(EED )
home
reports
(C)
Smart
meter E
remote
(WAN)
(D)
Smart meter E
with device in
the home
(HAN)
(E) “Niche”
Smart meter E,
with device in the
home and near
real time data
from slave meters
(DSMR 5: 2016,..)
HAN (WAN)
(F)
Smart
thermostats/
smart homes
HAN (WAN)
Remote
control
(Nest, GEO)
E Bill
(Year)
Month 24 hrs
(web
portal)
10 seconds 1 second (DSMR 5) Real time
G Bill
(Year)
Month 24 hrs 60 minutes 5 minutes
(DSMR 5)
Real time
Free Free Cheap Medium price
(+/- 100, 150)
Bluetooth/WiFi
P1 device; Cheaper
Pricey Device
+/- 250/350
W Bill
(Year)
N.A. 24 hrs Not (*)
DELTA pilot;
60 minutes
5 minutes
Ambition
Real time
15
Utility Services, Metering, Smart Homes

16. 16
Conclusion..
Water, Energy & Nature are valuable
resources we as a society should
approach with respect .. and in
conjunction!

17. 17
Questions?