Energex Integrating Batteries a Network Perspective Thursday 26 November 2015

2015

2020

2030

Network of the future • Home automation

• electric vehicles/batteries

• renewable generation

Connected network • Complex power sources and flows

Traditional network • Centralised

• Emergence of two-way power

flows

Direction is clear

Energex is establishing clear deliverables for

the period 2015 to 2020 to underpin a long term

sustainable business and enable customer

choice for their energy needs

~1000MW on installed domestic PV capacity

in a ~5000MW network. In some postcodes

>60% of customers have PV. Total energy

delivered is ~ 7% (1464GWh) of total

Energex has high Levels of Domestic PV

Where were you on 8th August 2015 ?

Minimum Load was 1663 MW @ 12:30 pm

Response to the Challenge

Normal Load Control

Program

‘Solar Sponge’ Load

Control Program

24 MWh of energy moved

to fill in the trough – from the use of hot water system loads

Being used during the period of solar production

Energex continues its transition to a smart grid

Drivers for battery pilots and trials

o Support customer energy needs

o Promote connected services

o Reduce network impacts due to PV

(e.g voltage rise and unbalance)

o Enable higher penetration of PV

Market driven

battery storage

pilot

2

Energex

directed battery

storage pilot

1

How does Energex

reduce costs or

generate revenue in a

market where our LV

network has a high

penetration of batteries?

Battery pilots

Market driven battery storage pilot

• Target sections of the network that would be likely to benefit from the

installation of batteries

• Run in cooperation with businesses selling batteries

• Offer incentives to customers who install batteries and provide

Energex with monitoring and control

• Metering installed to enable cost reflective pricing (TOU tariff, or TOU

demand tariff when available)

• Metering will also enable collection of engineering and power quality

data

Targeted areas of the network

Monitoring and control

• Incentives will only be paid to customers who install batteries and

provide control and monitoring

• Customer control system that prioritises solar charging and peak

discharging

• Controlled by an Energex approved interface:

AFLC DRED

Control system integrated with Poweron DMS

• Metering that provides engineering and power quality data into Energex’s

Distribution Monitoring Analytics (DMA) platform

Run in cooperation with businesses

selling batteries

Promotion of the incentive will be via businesses selling batteries

to customers, with the incentive paid directly to customers

following installation of the battery. The trial areas, conditions and

incentive value will be published on the Energex website.

10 kWh < $10K 19.2 kWh < $20K

What is out there now in

SEQ?

• 3 - 20 kWh systems

• $5K to $20K

• Shift to Lithium Iron but

still lead acid, flow and

gel systems

• Over 20 vendors

• Disparate array of

control systems