Strictly private and confidential
Alkimos Beach Battery Storage Trial
(ABEST)
API 2016 SUMMER SCHOOL
SurfAir Beach Hotel and Conference Centre,
Marcoola Beach
Sunshine Coast, Queensland
Presentation by Andy Wearmouth
Chief Engineer, Commercial
Synergy
24 February 2016
DM# 9839576
Today’s Discussion:
Participants in Project
The Concept
Why Alkimos ?
The Technology
Where are we at ?
Questions
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The Participants:
Synergy – project lead and implementer
Lend Lease – subdivision developer
Landcorp – northern suburbs development planning
Australian Renewable Energy Agency ( ARENA) – principal funder
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A time of uncertainty and rapid change
Falling grid demand (self generation) , increasing renewables penetration including rooftop solar and energy
efficiency is being forecast to a potential 50% reduction in electricity volume sold by traditional European utilities
within the next couple of decades….why will we be different ?
A result, utilities are changing their business models away from centralised distribution and focussing on
downstream opportunities
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Why Invest in Battery Storage Technology ?
Batteries are highly likely to become the storage device of choice as they move down their cost curve. ABEST
allows Synergy to be informed and provide learnings to industry through the ARENA arrangements.
Decreasing costs of battery technology
• Conventional centralised, dispatchable, fossil-fuel based generation is
gradually ceding ground to renewable energy sources and distributed
generation
• Until recently, solar PV technology was largely unaffordable, and only
economically viable with the support of significant government
subsidies
• Rapid advances in innovation and technology has seen this scenario
change significantly:
–
–
–
solar is exhibiting alarming learning rates of around 30% - that is
for every doubling of installed capacity, the price of an average
panel reduces by 30%
the price of an average panel has fallen by 75% in just four years
commercial PV in the SWIS now has a 3 – 5 year payback period,
without any government subsidies
• Combined solar PV and battery systems are already starting to
appear.
• Battery storage is the most significant technological change after solar
PV. While the price of batteries needs to fall to make this technology
commercially viable, this will only happen by deployment – the learn
by doing concept.
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The Concept of a Storage Device
A simple concept that has ben around for decades - storage technology allows the time shifting of energy –
historically pumped hydro but similar rules apply to a battery.
Without Battery
With Battery
PV Generation
Export to Grid
(kWh)
Consumption
30-min
interval
16.00
30-min
interval
0.60
kWh
14.00
0.40
12.00
0.20
10.00
Import
(kWh)
-
(0.20)
8.00
Battery full
6.00
(0.60)
4.00
(0.80)
2.00
(1.00)
-
Battery Charge
(kWh)
(0.40)
1
3
5
7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47
Import from Grid
•
•
Solar PV does not
generate
Source energy from Grid
Export to Grid
•
•
Solar PV generates energy
more than what is consumed
by the house
Excess energy exported/sold
to the Grid
Import from Grid
Import from Grid
•
•
Solar PV does not
generate
Source energy from
Grid
•
•
Solar PV does not
generate
Source energy
from Grid
Export to Battery
•
•
Export to
Grid
Excess energy from Solar
PV exported and stored in
Battery
Once Battery is full, excess
energy is exported/sold to
the Grid
Import from Battery
•
•
Solar PV does
not generate
Source energy
from Battery
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Rationale for Synergy
Threat of
customers
bypassing
network
Ensuring
efficient use of
existing assets
Alternative
business model
for retail
services
Opportunities
for wholesale
services
Insight into
customer
preferences and
behaviour
•
The rapid adoption of rooftop Solar PV has demonstrated that energy consumers will invest en masse in new technologies if they offer a positive
business case
•
Adoption by residential customers, facilitated by on-site battery storage, could be economic within 3-7 years. Early adoption for non-economic reasons
is likely to occur much sooner
•
The household business case for energy storage will improve as battery and PV capital costs fall and retail electricity tariffs continue to rise
•
The Project offers customers the benefits of on-site energy storage using the existing electricity network.
•
Potentially delays the need for network reinforcements
•
Batteries represent a new way of interacting with the customer: providing a defined energy service for a fixed fee. The service would not be tied to the
customer’s electricity consumption
•
The project would also demonstrate the (favourable) impact of district energy storage on distribution infrastructure requirements, raising the possibility
that new communities might be more economically served by a “micro utility” than by traditional infrastructure providers.
•
Synergy would, in partnership with others, be a plausible provider of micro-utility services.
•
The Project would provide the opportunity to investigate the optimal use of storage for services to customers, network operators and the wholesale
market
•
An appropriate treatment of storage in the wholesale electricity market would need to be negotiated through the Rules Change process
•
The project will need to analyse customer consumption data, both for customers using Synergy’s services and for a control group, at half-hourly
resolution to understand fully the impact of ABEST
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Why Alkimos Beach?
The Alkimos Beach Energy Storage Project will demonstrate the feasibility of a new energy servicing model using
both demand side and supply side products and services within the new residential land development of Alkimos
Beach
• Lend Lease, together with LandCorp are developing a new land
sub-division, 40km north of Perth at Alkimos Beach
• The vision for Alkimos Beach is to create a new benchmark for
community development in WA, via innovative planning, in areas
including:
– water and energy efficiency
– waste management
– reduction of carbon emissions
– use of green space
– other sustainable development opportunities
• At completion in 2032, Alkimos Beach will be home to 15,000
residents across 710 hectares (it will be the same size as the area
from Kings Park to the Coast)
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Why Alkimos Beach?
• The marketing of the subdivision by Lend Lease is likely to attract
residents predisposed to take part in a trial using new technologies.
• Public engagement with residents has indicated great support for
the initiative.
• Land is available to locate the required infrastructure without undue
disturbance of amenity.
• Western Power’s electricity distribution network is relatively
unconstrained at this location assisting in simpler network access.
• As part of the energy efficiency initiative, Lend Lease and LandCorp
approached Synergy to lead a trial of an energy storage project,
harnessing energy created from solar PV of 100-150 households.
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Alkimos Beach Battery Overview
Alkimos Beach is currently the largest residential battery storage project in Australia, and will enable Synergy to be
on the leading edge of this technology
• The Project will see a 1.1 MWh, fully
contained Lithium Ion energy storage
system connected to the distribution
network
• The storage facility will be housed in a
shipping container and situated on site,
in an inconspicuous location
• The aim of the Project is to:
–
–
–
unlock maximum value from solar
PV,
reduce dependence and supply
from grid electricity
increase value to residents
• The Project is initially set down for four
years, with an option to extend to 10
years (Battery has a life of 15+ years)
• Synergy will own the battery storage
facility
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How will it work?
Alkimos Beach Energy Storage Trial
Concept Diagram
Typical Profile
Trial Participants
• Trial participants who “spill” surplus energy to the network during
the day (rooftop PV) will receive energy credits representing stored
energy.
• When participants draw from the grid on the day (most likely the
evening peak) they will use their credits first.
Non Participating
Resident
• Overall, less energy imported from the Grid (pay less tariff to
Synergy) and reduction in export REBS payment from Synergy.
Excess PV
Energy
“Credits”
• Discharge controlled by Synergy.
• Operations and Maintenance of the facility will be provided by the
contractor with training to Synergy personnel.
Metering Devices
Excess PV
REBS
Payment
SWIS Grid
Low
Demand
Charging
Peak Load
Time(s)
Discharge
Alkimos Beach
Battery (1.1MWh)
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How does it work?
1.1 MWh / 300 kW battery storage system located next to distribution transformer within subdivision
Technical Configuration
• Round trip battery efficiency ~ 90%
• Connection voltage will be 22 kV
• Summer peak load reduction aimed at 2.5 kW per household for 4 hours
Energy Storage Facility:
• Network connected, integrated system
of storage, inverter and protection /
control systems
•
•
Battery
Storage
O&M by vendor via Service
Agreement
Change / discharge timing controlled
by Synergy
Sub-transmission
system
Distribution
system
Household
M
Grid
Synergy
Excess solar
energy
Energy draw
from battery
Customers in the Project Area:
• Solar PV
• Advanced metering
• Time-of-use
•
Remote meter reading
•
Direct Load Control
(DLC)
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Alkimos Beach Technology
The Procurement Process
• The battery in particular comprised long lead time items which impacted the critical path. In
order to procure the storage device in a timely manner, Synergy has run a two stage process:
–
–
an Expression of Interest (EOI) process conducted in November 2014 resulted in 22
interested companies submitting details of their potential offerings
A Request for Tender (RFT) was issued to three parties that were short-listed in February
2015
• Synergy has executed a contract with Energy Made Clean (EMC) to supply, deliver and erect
an energy storage system at Alkimos Beach to support the Alkimos Beach Energy Storage
Trial (ABEST).
• The agreement with EMC for the storage system meets:
–
–
–
–
•
ARENA’s Funding Agreement requirements
Lend Lease and LandCorp requirements as partners in the ABEST
The Western Power Technical Rules
The Landowner (Water Corporation) requirements
Synergy engaged with Western Power to commence the Electricity Network Access process.
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Alkimos Beach Technology
Synergy has engaged Energy Made Clean Pty Ltd (EMC) to supply Alkimos 1.1 MWh energy storage device. EMC
will deploy Samsung technology for the lithium-ion technology, with EMC to provide EPC services
Who is Energy Made Clean?
• EMC is a Western Australian based business, that specialises in
commercial solar and off-grid power solutions
• EMC was established in 2004 and employs ~20 personal based in
Perth
• EMC’s head in Perth also houses its 2,500m2 manufacturing facility
where we manufacture our lithium ion battery storage containers
• EMC has significant experience across a range of commercialscale solar projects, including EMC’s Build, Own, Operate and
Maintain (BOOM) solar PV power station in Carnarvon
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Alkimos Beach Technology
The Samsung Battery - the heart…….
• The individual cell cathode is a blend of Lithium Manganese Oxide LiMn2O4 and Nickle Cobalt
Manganese Oxide LiNiMnCoO2.
• The anode is natural graphite.
• 3V - 4.1V per cell
• 16 Cells per Tray (in series)
• 12 Trays in series per rack with a switchgear unit - 576 - 787.2V output (rated 42.6
kWh)
• 29 racks in parallel each with same length cable back to the DC marshalling board
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Alkimos Beach Technology
The Samsung Battery - the heart…….
• The 29 rack battery has been built into a modified, 30 foot long sea container
which will weigh around 26 tonnes when complete.
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Alkimos Beach Technology
Safety and Protection
• All li-ion technologies are vulnerable to over charging and discharging too fast – can result
in catastrophic cell failures and the risk of fire – ask Mr Boeing and others !
• Managing multiple cells in series is difficult and needs careful engineering design.
• Each cell is engineered around safety relief – safety in design.
• Each rack is individually fused to limit runaway type faults.
• Each tier is protected where it marshals to other tiers.
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Alkimos Beach Technology
Life
• Typical of Li-ion, maximum life is achieved by limiting cell temperatures when charging and
discharging. This will be one of the big issues for residential batteries in Australian
conditions !
• Battery container is air conditioned and carefully designed to achieve uniform cooling of
the battery racks.
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Alkimos Beach Technology
Making it useful…….
• The output DC of the battery is fed to a SMA 500kVA inverter (de-rated for this application) to produce a 270 V AC , 3 phase output.
• The inverter is controlled to manage the discharge rate of the battery.
• This output feeds a 270V / 415 V 3 phase DYn11 transformer to provide further harmonic suppression.
• The inverter, transformer and control and monitoring equipment are housed in a modified and segregated second 30 foot sea
container.
• A 415V / 22kV distribution transformer connects to the facility to the Western Power 22kV network within the subdivision.
• Facility is able to be remotely monitored by both EMC and Synergy.
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Project Status
The time line
• To date, the Alkimos Beach Energy Storage Trial (ABEST) has:
–
–
–
–
–
secured the funding arrangement with ARENA and the project partners
completed the process for the procurement and maintenance of the Battery and issued a contract to EMC
secured the site for the battery on Water Corporation land
secured an off of network access to the South West Interconnected System (SWIS) from Western Power
commenced development of new retail products
The project is now in the ‘construction phase’ with the core deliverables being:
– fabrication and commissioning of the battery
– complete site works
– setup of the data analysis control groups
•
Current Status
Q2 – Q3 2015
Q2 2014 – Q1 2015
Battery Construction &
Commissioning
Project Development
•
Commercial agreements with
project partners and service
providers
•
Issue EPC Contract
•
Develop Retail products
•
Commence marketing
campaign
•
ARENA Approval
•
Complete business case and
Project Plan
•
Connection Application into
SWIS
Commence Data Baseline
study
•
Development Application to
LGA & PAWA
•
Implement & Commission
Battery
•
Q4 2015 - Q1 2016
2016 - 2020
Go Live
•
Test operation of Battery &
Retail products
•
Go Live
•
Initial ARENA operational
report
Q4 2020
Project conclusion and
decommissioning
Operational reporting
•
Report to ARENA the
operational performance of the
Battery
•
Conclude study
•
Decommission battery or extend
site lease with Water Corp
•
Report client behavioural
changes
•
Present Final report to ARENA
•
Report other key findings
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So what does it look like now we are done ?
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Questions ?
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