Notice of Inertia and Fault Level Shortfalls in Tasmania
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Annual Planning Report 2020
ANNUAL PLANNING REPORT 2020 Feedback and enquiries We welcome feedback and enquiries on our 2020 APR, particularly from anyone interested in discussing opportunities for demand management or other innovative solutions to manage limitations. Please send feedback and enquiries to: [email protected] Potential demand management solution providers can also register with us via our demand management register on our website at https://www.tasnetworks.com.au/demand-management-engagement-register 1. Introduction 2 2. Network transformation 12 3. Transmission network development 22 4. Area planning constraints and developments 36 5. Network performance 66 6. Tasmanian power system 82 7. Information for new transmission network connections 96 Glossary 106 Abbreviations 109 Appendix A Regulatory framework and planning process 110 Appendix B Incentive Schemes 117 Appendix C Generator information 118 Appendix D Distribution network reliability performance measures and results 120 Appendix E Power quality planning levels 123 TASNETWORKS ANNUAL PLANNING REPORT 2020 1 1. Introduction Tasmania is increasing its contribution to a This transition, with the move to increased low cost, renewable energy based electricity interconnection and variable renewable energy sector and being a major contributor to generation, is fundamentally changing how the firming electricity supply across the National power system operates. We, in conjunction with Electricity Market (NEM). As a key part of this the broader Tasmanian electricity industry, have objective, we present the Tasmanian Networks Pty managed this situation well to date, however the Ltd (TasNetworks) Annual Planning Report (APR). diligence must continue and solutions to new As the Tasmanian jurisdictional Transmission and challenges identified to keep pace with change. -
RE: EPR0059 - Frequency Control Frameworks Review
5 December 2017 Australian Energy Market Commission (AEMC) PO Box A2449 Sydney South NSW 1235 Dear Mr Pierce, RE: EPR0059 - Frequency Control Frameworks Review Tasmanian Networks Pty Ltd (TasNetworks) is pleased to provide our response to the Issues Paper – Frequency Control Frameworks Review which was published by the AEMC on 7 November 2017. As the Transmission Network Service Provider (TNSP) and Distribution Network Service Provider (DNSP) in Tasmania, TasNetworks is focused on delivering safe and reliable electricity network services while achieving the lowest sustainable prices for Tasmanian customers. We are committed to ensuring the secure operation of the Tasmanian power system while seeking new and innovative ways to extend the capability of our networks. This includes pursuing solutions that will support an increased penetration of intermittent renewable generation in Tasmania. We contributed to the development of, and fully support, the Energy Networks Australia submission. The purpose of this submission is to highlight key issues that have particular relevance in the Tasmanian region as well as provide commentary on a number of technical matters pertaining to network frequency control. Given the nature of the Tasmanian power system, frequency control has always been a significant consideration for the design and operation of our network. It has dictated the need for differing Frequency Operating Standards (FOS) and the development of innovative solutions, including the implementation of fast acting System Protection Schemes -
Giving Young
Giving young Tas ma say nians their on n the D ania Re raft Tasm n newa Pla ble Energy Action Contents Minister’s comments ............................................................................1 Talking with children and young people ..........................................3 Survey questions ...................................................................................4 Definitions of key terms .....................................................................5 Renewable Energy in Tasmania .........................................................6 Why do we need a Renewable Energy Action Plan? .............. 7 Tasmanian Renewable Energy Target (TRET) ...............................8 Turning Tasmania into a global renewable energy powerhouse (Priority 1) ...................................9 How does pumped hydro energy storage work? .......................13 How is green hydrogen produced? .................................................17 Making energy work for the Tasmanian community (Priority 2) .................................. 23 Growing the economy and providing jobs (Priority 3) ............. 26 Minister’s comments Renewable energy is important. It’s clean, sustainable and can help manage climate change. Tasmania is Australia’s first state when it comes to renewable energy. We have some of the best water and wind resources in the world that are helping us build a renewable energy industry for the future. We are doing so well that we will soon be producing enough renewable energy for all of the houses and businesses in Tasmania. It means Tasmanians will be able to say our electricity is 100 per cent renewable. That’s a record for Australia and up there with only a handful of countries around the world. Not only is it great that Tasmania will soon be producing enough clean renewable energy for all Australia’s energy industry is also changing. As a Tasmanians, but we can produce even more. In fact country we are introducing more and more renewable we have so much renewable energy ready to be energy from natural resources like wind and solar. -
Project Marinus Business Case Assessment Summary
Business Case Assessment Summary Document CONFIDENTIAL These records and accompanying documentation consist of confidential and/or internal deliberative information prepared by representatives or consultants working on Project Marinus for deliberative purposes. The document is not for public release as the information may not be final in nature and could be misapplied or misinterpreted. The information should not be used, disclosed or transferred without TasNetworks express written permission. All records are not intended for public release. This document has been produced by Tasmanian Networks Pty Ltd, ABN 24 167 357 299 (hereafter referred to as "TasNetworks"). Enquiries regarding this document should be addressed to: Bess Clark General Manager Project Marinus PO Box 606 Moonah TAS 7009 Email: [email protected] This Activity received funding from ARENA as part of ARENA's Advancing Renewables Program. The views expressed herein are not necessarily the views of the Australian Government, and the Australian Government does not accept responsibility for any information or advice contained herein. Page 1 of 23 Executive summary By 2035 at least 12,000 megawatts (MW) of coal-fired generation is forecast to retire in the National Electricity Market (NEM). Replacing this will require a combination of resources, including variable renewable generation, storage and dispatchable ‘on demand’ generation. Marinus Link and supporting transmission unlock Tasmania’s clean, cost-competitive generation and storage resources. Together they are part of the lowest cost solution to provide dispatchable energy to the NEM where and when it’s needed. The Business Case Assessment shows that a 1500 MW Marinus Link and supporting transmission are feasible and provide greater benefits than costs under all modelled scenarios. -
Tasnetworks Annual Report 2019-20
Tas 1 Networks.com.au AnnualReport Powering a Bright Future 2019-20 Over the past year, we’ve invested some time as a business discussing ‘why’ we come to work each day, solidifying our drive, our reason for being – our Purpose. The carefully considered articulation of our TasNetworks Purpose as ‘Powering a bright future’ is personal to us. It represents our unique intention to secure a positive, sustainable future for our Tasmanian community through energy transmission and distribution. 2019 Star trails over Palmerston Substation near Poatina in Tasmania. Photo powered by TasNetworks’ Greg Gibson. Greg by TasNetworks’ Photo powered in Tasmania. near Poatina trails over Palmerston Substation Star - 20 AnnualReport 2019-20 2 3 CONTENTS ABOUT US 2 FROM OUR CHAIRMAN 4 FROM OUR CEO 6 RESILIENCE 8 OUR PEOPLE 18 OUR CUSTOMERS AND OUR COMMUNITY 28 SAFETY AND ENVIRONMENT 39 RENEWABLE ENERGY AND GROWTH 49 CORPORATE GOVERNANCE 56 PERFORMANCE AGAINST OUR STATEMENT OF CORPORATE INTENT 69 TASMANIAN GOVERNMENT REPORTING REQUIREMENTS 73 DIRECTORS' REPORT 75 AUDITOR'S INDEPENDENCE DECLARATION 79 TasNetworks acknowledges the Tasmanian AUDITOR’S REPORT 80 Aboriginal Peoples as the Traditional Owners of Tasmania, upon whose lands we live and CONSOLIDATED FINANCIAL STATEMENTS 85 work, and pay deep respect to Elders past, present and emerging. We acknowledge DIRECTORS' DECLARATION 141 the cultural connection that the Tasmanian Aboriginal Peoples have with land, sea, sky and community. Tasmanian Networks Pty Ltd ABN 24 167 357 299 PO Box 606, Moonah, TAS 7009 1-7 Maria Street, Lenah Valley, Tasmania 7008 1300 127 777 | tasnetworks.com.au The cover image shows star trails over Palmerston Substation near Poatina in Tasmania. -
EY Appendix to Tasnetworks Supplementary
Appendix to the TasNetworks Supplementary Analysis Report Addendum to Project Marinus PADR economic modelling report Tasmanian Networks Pty Ltd 9 November 2020 Ernst & Young Tel: +61 7 3011 3333 111 Eagle Street Fax: +61 7 3011 3100 Brisbane QLD 4000 Australia ey.com/au GPO Box 7878 Brisbane QLD 4001 Notice Ernst & Young (“we” or “EY”) was engaged on the instructions of Tasmanian Networks Pty Ltd (“TasNetworks” or “Client”) to provide market modelling in relation to the proposed Marinus Link interconnector (“Project”), in accordance with the contract dated 14 June 2018. The results of EY’s work, including the assumptions and qualifications made in preparing the report, are set out in EY’s report dated 27 November 2019 ("Report") and this report dated 9 November 2020 (“Addendum”) which is an addendum to the Report and has been prepared at the specific request of the Client to update the scenarios and various input assumptions to align with more recent data. This Addendum must be read in conjunction with the Report1 to understand the full context and details of the model used to compute the long-term least-cost generation development plan and gross market benefits of Marinus Link. The Report and Addendum should be read in their entirety including this notice, the applicable scope of the work and any limitations. A reference to the Report includes any part of the Report and Addendum. No further work has been undertaken by EY since the date of the Report or the Addendum to update them. Except as described in this Addendum, no further work has been undertaken by EY since the date of the Report to update its contents. -
Report Tabled 15 August 2017
2017 (No. 16) PARLIAMENTARY STANDING COMMITTEE OF PUBLIC ACCOUNTS REPORT ON The financial position and performance of Government owned energy entities CONTENTS MEMBERS OF THE COMMITTEE 4 GLOSSARY 5 CHAIR’S FOREWORD 7 1. ESTABLISHMENT AND CONDUCT OF THE INQUIRY TERMS OF REFERENCE 13 2. RECOMMENDATIONS 15 3. SUMMARY OF FINDINGS 17 4. BACKGROUND 29 KEY EVENTS IN TASMANIA’S ENERGY SECTOR FROM 1998 TO 2016 29 Disaggregation of the Hydro-Electric Commission 29 Tasmanian Natural Gas Pipeline 30 Tasmania Enters the National Electricity Market 32 Tasmanian – Victorian interconnector (Basslink) 33 Carbon Tax and Basslink Exports 34 Beginnings of the Tamar Valley Power Station 35 Ownership of Tamar Valley Power Station transferred from Aurora Energy to Hydro Tasmania 36 Summary of structural reforms as result of Energy Supply Industry Expert Panel review 40 Intended Sale of the Combined Cycle Gas Turbine Announced and Withdrawn 41 Low Rainfall, Basslink Fault and Government Response 42 Wind Farms 43 Woolnorth Wind Farms and Beginning of Musselroe Wind Farm 43 Joint Venture Arrangements 44 Completion of Musselroe Wind Farm 45 Renewable Energy Certificates 45 Proposed Tasmanian Wind Farms 47 King Island Renewable Energy Integration Project 48 Flinders Island Hybrid Energy Hub 48 Other Privately Owned Wind Turbines 48 Solar Panels 51 TASMANIAN ENERGY ENTITIES, MARKETS AND REGULATION 53 Tasmanian Energy Entities and the Electricity Supply Chain 53 Electricity supply chain - Generation 53 Electricity supply chain - transmission and distribution 55 Electricity -
Legislative Council GBE A
UNCORRECTED PROOF ISSUE Thursday 7 December 2017 - Legislative Council - Government Businesses Scrutiny Committee A - Tasmanian Networks Pty Ltd LEGISLATIVE COUNCIL GOVERNMENT BUSINESSES SCRUTINY COMMITTEE A Thursday 7 December 2017 MEMBERS Mr Armstrong Mr Farrell Ms Forrest Mr Gaffney Mr Hall (Chair) Ms Lovell IN ATTENDANCE Hon. Guy Barnett, Minister for Energy Ministerial Office Mr Michael Connarty, Senior Adviser Tasmanian Networks Pty Ltd Dr Dan Norton, Chairman Mr Lance Balcombe, Chief Executive Officer Ms Bess Clark, General Manager Strategy and Stakeholder Relations Mr Ross Burridge, General Manager Finance & Business Services Mr Wayne Tucker, General Manager Strategic Asset Management The committee resumed at 11.43 a.m. CHAIR - Thank you, minister, in your other Energy portfolio hat. Mr BARNETT - Thank you very much, Chair, and thanks members of the committee for this opportunity. CHAIR - I invite you to make a short opening statement in regard to TasNetworks. Thursday 7 December 2017 1 Tasmanian Networks Pty Ltd UNCORRECTED PROOF ISSUE Mr BARNETT - Thank you, Chair. A very brief opening statement from me. TasNetworks reported a profit of $93.9 million, marginally above budget by $1.2 million. It has meant total returns to Government of $176.2 million. The main point to note is the work of TasNetworks, consistent with our Tasmania First energy policy, to provide the lowest possible power prices with the target to have the lowest power prices in Australia by 2022. I will also note TasNetworks' work to achieve security of supply, consistent with our Tasmania First energy policy. I note their strong engagement with ARENA and the announcement a couple of weeks ago between ARENA and TasNetworks of $10 million from federal and state governments to support the further business work and business plan with respect to the second interconnector. -
Managing a High Penetration of Renewables– a Tasmanian Case Study
Managing a High Penetration of Renewables– A Tasmanian Case Study 1 1. Background The Tasmanian power system has been rapidly evolving over the past 15 years with increasing levels of renewables penetration in conjunction with the commissioning of the Basslink High Voltage Direct Current (HVDC) interconnector that connects Tasmania to the National Electricity Market (NEM). During these advances, Hydro Tasmania, TasNetworks (formerly Transend) and the Australia Energy Market Operator (AEMO) have worked collaboratively to identify key emerging issues and develop innovative and cost effective solutions to allow a largely unconstrained but secure network. While Tasmania is not the region with the greatest deployment of wind and solar energy, the technical and market challenges tend to demonstrate themselves earlier due to its size and electrical isolation. Tasmanian hydro generation is on one hand the most flexible of all energy sources, but conversely, is subject to seasonal fluctuations, ‘must-run’ requirements and limitations on its ability to run at low output on a continuous basis. The Basslink HVDC interconnector adds significant additional flexibility to the system but some operational complexities exist which have driven a number of the technical solutions outlined in this paper. A key aspect of this is catering for the instantaneous loss of this interconnector being up to 50% of the total demand in Tasmania at a given time being a credible contingency. The challenges experienced in Tasmania are now emerging in South Australia (SA) -
Tasnetworks Annual Report 2018-19
AnnualReport 2018-19 Tas Networks.com.au TasNetworks pays respect to the traditional owners of this land, the Tasmanian Aboriginal people. We pay respect to those that have passed before us and acknowledge today’s Tasmanian Aboriginal people who are the custodians of this land. Tasmanian Networks Pty Ltd ABN 24 167 357 299 PO Box 606, Moonah, TAS 7009 1-7 Maria Street, Lenah Valley, Tasmania 7008 1300 127 777 | tasnetworks.com.au The cover image shows the impact the January 2019 bushfires had on our electricity assets and the superb effort of the emergency teams to protect our community and assets from bushfire. 1 CONTENTS ABOUT US 2 FROM OUR CHAIRMAN 4 FROM OUR CEO 6 OUR CUSTOMERS 9 SAFETY AND WELLBEING 16 CONNECTING WITH OUR COMMUNITY 20 OUR PEOPLE 22 ENVIRONMENT AND SUSTAINABILITY 26 CYBER SECURITY 29 GROWTH 33 CORPORATE GOVERNANCE 38 PERFORMANCE AGAINST OUR STATEMENT OF CORPORATE INTENT 51 TASMANIAN GOVERNMENT REPORTING REQUIREMENTS 54 DIRECTORS' REPORT 55 AUDITOR'S INDEPENDENCE DECLARATION 59 INDEPENDENT AUDITOR’S REPORT 60 CONSOLIDATED FINANCIAL STATEMENTS 64 DIRECTORS' DECLARATION 114 AnnualReport 2018-19 2 ABOUT US • Operating the network on a day-to-day basis, including all fault restoration TasNetworks delivers power to • Maintaining the public lighting system Tasmanians. Our vision is to be trusted by our customers to deliver today and 42-24 create a better tomorrow. We own a subsidiary business called 42- 24 that specialises in telecommunications, We own, operate and maintain the electricity information technology services and data transmission and distribution network in centres. Tasmania. We deliver a safe, cost-effective and reliable electricity supply to more than Project Marinus 285,000 residential, commercial and industrial We're finalising the business case assessment customers. -
Tasnetworks Pty Ltd ANNUAL REPORT | 2014 Tasmanian Networks Pty Ltd Annual Report 2014
TasNetworks Pty Ltd ANNUAL REPORT | 2014 Tasmanian Networks Pty Ltd Annual Report 2014 Tasmanian Networks Pty Ltd Annual Report 2014 Contents Company overview ..............................................................................................................................2 Highlights 2013/14...............................................................................................................................3 Chairman's review ...............................................................................................................................4 CEO's report ........................................................................................................................................5 Corporate governance .........................................................................................................................6 Legislative compliance.........................................................................................................................8 Executive management team ..............................................................................................................8 Organisational structure.......................................................................................................................9 Special purpose financial report for the financial period ended 30 June 2014 ..................................13 Statement of corporate intent ............................................................................................................30 Performance -
Confidential
Electricity sales and maximum demand forecasts for Tasmania to 2045 CONFIDENTIAL A report for TASNETWORKS Prepared by the National Institute of Economic and Industry Research (NIEIR) ABN: 72 006 234 626 416 Queens Parade, Clifton Hill, Victoria, 3068 Telephone: (03) 9488 8444; Facsimile: (03) 9482 3262 Email: [email protected] December 2014 TON812-TasNetworks-Dec 2014-revised 090315/Transend/2014/December While the National Institute endeavours to provide reliable forecasts and believes the material is accurate it will not be liable for any claim by any party acting on such information. Contents Page no. 1. Introduction and study scope 1 1.1 Background 1 1.2 Data to be provided by TasNetworks 4 2. The economic outlook for Australia and Tasmania to 2024-25 6 2.1 Introduction 6 2.2 The world and national outlook 8 2.2.1 Introduction 8 2.2.2 The world economy 9 2.2.3 The economic outlook for Australia to 2020 15 2.3 The Tasmanian outlook 25 2.3.1 Introduction 25 2.3.2 Summary of scenarios 25 2.3.3 The economic outlook for Tasmania to 2018-19 27 3. Electricity forecasting methodologies and modelling assumptions 30 3.1 Methodology – electricity sales forecasts 30 3.2 Methodology – forecasts for system maximum demand 34 3.3 Carbon (CO2e) pricing impacts 37 3.4 Major industrial load (MI) 39 3.5 An assessment of the temperature sensitivity of Tasmanian daily demands 44 3.6 Time profile of winter maximum demands 48 3.7 The impact of gas supply on electricity sales 49 3.8 The contribution of non-scheduled generation and wind 50 3.9 Assumed price elasticity for Tasmania and how it will contribute to the forecast model 51 3.10 A summary of the impact of greenhouse policy on Tasmania 52 4.