VOLT GROUP LIMITED — Regulatory Filings 2013

Nov 18, 2013

ASX Announcement

19 November 2013

(ASX: ERJ )

Enerji Limited

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Carnarvon at Full Output

• Enerji’s Carnarvon Pilot Plant now has heat recovery at full capacity of 130 deg C.

• Output is at 300kW which is in accordance with projections but with further improvement identified.

• A high calibre team is performing the trials for Enerji and preparing an independent assessment of the results.

• Horizon Power has fostered improvements by Enerji of its technology by close coordination, review and feedback through the trials.

Trialing at Full Capacity

Trials are continuing for the Carnarvon Pilot Plant. On 14 November consent was received to take the system to full operating temperature of 130 degrees Celsius . The heat recovery temperature has been increased to this temperature and the maximum available heat being recovered from the host power station.

As previously reported, whilst the Enerji facility is designed with a sent out capacity of 700kW, the limited heat available from the host plant is sufficient for output of approximately 300kW. In comparison, with the heat recovery system operating at 130 degrees Celsius, the measured electricity output is 301kW .

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Above: Operating screen image with generator output at 301kW

The 301kW output exceeded expectations in that it was achieved without fine tuning and optimisation of control settings. It is expected that with more fine tuning the output will improve materially.

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Above: An operator interface screen

The ambient temperature has been typical for this time of year. The Enerji cooling water system is oversized for the plants needs requiring only half of the cooling system to be in service. The other half of the cooling system is retained in reserve.

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Above: Evaporative cooling tower for the cooling water system

Enerji Limited

(ASX: ERJ )

ASX Announcement

19 November 2013

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Monitoring of Trials

The facility is being monitored by Opcon in Sweden via remote telemetry.

• Design and specification improvements to reduce capital costs. Plus, in addition to the cooling water system indicated above, other items of equipment and systems were also identified as oversized and present opportunities for cost savings.

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Above: Primero’s Nathan Mathews (left) with Opcon’s Swedish Engineers Samuel Ostman and Ingemar Sergorholm

Trials are also being witnessed by Enerji’s independent engineering consultant. Findings from the trials are to be analysed and reported in due course.

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Value Engineering

Above: Cold water system (foreground) and hot water system (background)

Horizon Power has provided ongoing and detailed feedback to Enerji which, in conjunction with considerable work by Enerji, has facilitated in substantial quality and “value engineering” improvements being identified. A few improvements were implemented at Carnarvon but mostly they will be applied to new facilities.

The improvements are commercially significant and represent:

Detailed new financial analysis has been prepared that captures all of these improvements. The analysis is being applied to the new projects that Enerji has in development and with favorable results.

Geoffrey Reid

Company Secretary Enerji Limited +61 8 9268 3800 www.enerji.com.au

• Elimination of operational risk and simplification of operational interfaces for the host facility.

• Considerable improvements to operating efficiency and output for the same amount of available waste heat.

• Design improvements and planning to streamline project delivery and improve quality, operability and reliability.

About Enerji

Enerji Limited is a Perth-based clean power company focused on delivering waste heat to power systems.

The technology transforms waste heat into electricity and therefore creates significant energy cost savings and reduced CO2 emissions.