Independent Power Producers (IPPs)
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1 AGRI-SA Commodity Conference 2016 Independent Power Producers (IPPs) 26 February 2016 By: Title: W. Böhmer Regional Manager Eskom Grid Access Unit
2 Overview of the presentation Introduction. Achievements to date: recent large/key Independent Power Producer (IPP) project connections to the Eskom grid. NERSA Notice regarding small embedded generators, and the impact on Eskom. Eskom s responses to Small/Micro Generators (SMGs). Conclusions. Supporting slides: definitions, standards, processes. 2
3 Introduction SA has recently experienced a tight electricity supply, and reserve margins were < target of 15% of demand. Demand is expected to decline a bit more, and grow at lower rate thereafter (this is also reinforced by, amongst others, the global decline in commodity prices). The SA power sector is in a period of significant capacity ramp up (generation capacity, grid infrastructure, network expansion, etc.) Eskom continues to drive the New Build Programme; this will add new capacity in the foreseeable future (rest of Medupi units, Kusile, Ingula). It is further expected that the IPP Programme driven by the SA Government will add significant additional IPP capacity. SA s energy mix needs to diversify (IRP 2010), and is expected to significantly shift to renewables over years. The Eskom strategy is to support a growing economy and a robust power sector. 3
4 Recent DoE Renewable Energy IPP connections (Large/Key projects) Description TOTALS Projects MW Grid connection (Contracted MW) Projects connected to the grid Commercial Operation (CO) (Achieved MW) Projects achieved COD Early Operating (EO) (Achieved MW) Projects in EO Period The total generating capacity in CO and EO is MW. The processes to connect IPPs have been rolled out. In addition a significant amount of additional network and grid planning engineering work is also complete (for connection estimates for other bid windows and/or DoE programmes). The Tx Grid Connection Capacity report has been completed recently, also the 10-year Transmission Development Plan. 4
5 NERSA Notice and Eskom, related to SMGs In December 2015 NERSA issued a notice informing that the Department of Energy (DoE) is in the process of drafting licensing regulations (including for activities related to small embedded generation). Also that these regulations will provide the necessary policy framework within which Regulatory Rules will be formulated and applied (i.e. also the licensing requirements). Eskom has given input on the previous version of draft regulations, also at the public hearing. Once any new regulations are published, Eskom has to determine the impact on our governance process, and again inform NERSA, and obtain ultimate approval when/if necessary, before implementation. In the meantime, Eskom had developed a Framework for Small/Micro Generation (SMG) to deal with applications and connection from IPPs (capacity < 1,000kW). The Eskom Grid Access Unit (GAU) has been facilitating this. Historical LV Distribution network designs are radial: there is one single source of energy, and portable earthing is not provided for employee safety, when work is in progress on LV networks. The connection of SMGs introduces new challenges, including reverse power flow on the LV Network. Therefore, this requires revision of LV Design, Operating and Maintenance philosophies, in order to ensure safety of public, staff and equipment.
6 Eskom s response to SMGs The IRP (update) estimates that residential and commercial PV capacity could reach 22.5GW by 2030 (and there are also other SMG technologies). Critical objectives to be achieved by Eskom for service offerings to SMG network customers: Provide consistent communication, and ease of information availability and accessibility. Non-discriminatory access to the Eskom grid (while maintaining system and network integrity). Optimal cost of the service. Eskom established the SMG Steering Committee to drive the framework. 6
7 Eskom s response... (cont) Small/Micro Generation (<1 MW) Framework Area To Be Addressed Connection costing and Contracts Technical (Eskom Group Techn and Dx) Process excellence: Application through to Operations Billing and Cost recovery (Payments) Operations IDM & Renewables Integration Communication Use GAU to manage service relationship, stakeholder management and interfaces related to SMG s in the interim until the framework is finalised. Define and implement technical standards for connection and operation. Develop an optimised SMG connection process. Define operations processes for SMG. Resolve pricing policy and cost recovery issues. Build SMG intelligence framework and capability. Establish capability to integrate SMG s across the business. 7 Measures Outcome Establish clear accountability Improve Eskom s image and reputation in dealing with SMG s Achieve nondiscriminatory grid access for SMG s Effective organization with process excellence in SMG connection and operations
8 Conclusions Development of the industry is underway, in order to adapt to fundamental changes that are happening. The role of IPP Industry Associations is developing (e.g. for quality assurance, participation in policy and standards developments). Eskom has taken every application for grid access (also from SMGs); connections at low voltage are quoted to connect at medium voltage, and is working on more effective processes for SMGs (from advising, through application to connection and operations). Eskom is also supporting other entities where/if appropriate (e.g. Department of Labour, SABS, etc). 8
9 Thank you Inquiries: Wolfgang Böhmer Regional Manager Grid Access Unit Programme Manager Eskom SMG
10 Supporting Slides
11 Definitions and terms related to SMGs SMG Small/Micro Generation (any customer-owned generation that is less than 1000kW, and connected and synchronised to the Eskom grid). LV Low voltage supply which is normally at 400V (three phase) or 230V (single phase). Dedicated transformer supplies This is where a customer takes a LV supply and is the only customer to be supplied from that transformer. The supply could be: 16kVA, 25kV, 32kVA, 50kVA, 100kVA, 200kVA, 315KVA, 500kVA. Shared LV network customers These are where multiple customers are supplied from a single Eskom transformer at LV (typically residential-type customers). MV Customers This is where the customer owns the transformer and takes a supply from Eskom at medium voltage (11kV or 22kV - typically). EG Embedded generation plant owned by the customer. Could be PV, wind, hydro, biogas, biomass, etc. type generation. 11
12 Small/Micro Generation - more background Eskom has well defined standards, processes and systems to deal with the application, connection and post connection management of generation projects to be connected to the grid that is greater than 1MW (Large and Key IPP and other generation projects).there are also well defined national grid codes for these types of generators. There are no national standards, regulations and grid codes for connection of Small/Micro Generation (SMG) that is less than 1MW at LV. There are various commercial options available to IPPs (SMGs and Large/Key) A Power Purchase Agreement (PPA) through the DoE procurement programme Wheeling to a third party, or to own site often large or key IPPs Banking of energy Off-set (no export onto the grid) very often SMGs Etc. 12
13 Status of standards (for both the Network Customer and the Utility) Equipment Specifications Disconnector Isolator (Once off stays off) and RCD Labelling Requirement Meter Kiosk Requirement Dedicated network Meter Kiosk Requirement shared network RSA Grid Code NRS NRS NRS SANS Wiring SANS INV SANS xx DC Interim Eskom Guide INV Project Engineering Planning and Design Requirement How to apply for permission Certificate to Connect (in the absence of SANS Testing requirement of Inverters (until there is an SABS approved products inverters) Who pays for what Grid Access Requirement Operating Requirement (Emphasis on Safety) Ops Guideline dedicated Supply Ops Guideline Shared Supply HV and LV Regulation updates Database for Installed PV Operating Diagrams Use of Smart technology
14 Process flow Connection Options SMG (less than 1MW) Small power users tariffs Large power users tariffs Prepaid Distributed LV feeders Dedicated Transformers Connected at LV Connected at MV No solution in place Operating guideline Factors associated to NERSA SSEG policy Operating Guideline and CUoS agreements available Complete 28 Pilot sites and establish OU take over Convert to MV Existing connection process (=Large/Key process) Approval for pilot site establishment No banking option for exported power SMG SC and Pricing OC banking policy approval needed Allow for additional sites in controlled manner (to follow process) Supply tariff conversion options available but very expensive and no Dx stds. Option to export power and be compensated in line with existing policy
15 Process to deal with illegal SMG connections There are three categories for SMG electrical connections that are being done illegally by existing Eskom Customers (sometimes it is also >1MW)): SMG on a Shared LV network SMG on a Dedicated Transformer Supply (this type of connection is also not allowed because it is, by definition also LV) SMG on MV Supply (this is allowed by Eskom but the process of connection has to be followed). If Eskom finds any of the three types of connections, Eskom will issue a letter to the customer to indicate that the EG needs to be disconnected. Any EG / SMGs that is grid tied and where no Connection Agreement is in place, is illegal. There is a process to get to a signed Agreement. Should the customer not disconnect on receipt of the letter or again reconnect his EG later on, Eskom will issue a tamper fee and disconnect their Eskom supply. The customer can only have a reconnection by signing a valid Connection Agreement with Eskom (by following the process of Application through Quotation), or the EG must not be grid-tied, then Eskom will reconnect. 15
16 Process to deal with illegal SMG connections... (cont) If the meter has reversed, Eskom will replace the meter will an electronic meter, recover all lost revenue and issue a tamper fee. For MV and HV supplied customers, there is a proven connection process. We are optimizing the SMG processes, and developing the approach to follow more effective and appropriate engineering processes (but still cover all requirements). Customers on dedicated transformer supplies can also apply to have the supply point converted to MV so that they can follow the MV connection process. In most cases it is expensive to convert an existing Eskom supply from LV dedicated transformer supplies to MV. The customer will still have to provide his own MV/LV transformer and the other electrical connection requirements. The customer then also takes on the responsibilities related to the OHS Act (MV supplies). Customers on dedicated transformer supplies can also wait for the connection process for LV dedicated transformer supplies to be implemented. 16
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