S2d: Mainstreaming DER Network Support

• Where multiple value streams and use cases can be harnessed within the same data access/provision infrastructure, this will strengthen and accelerate the case for external LV data presentation.

While the shape of future distribution services markets is uncertain, DER flexibility can be seen as a valuable system resource that may provide opportunities to alleviate emerging network investment. Networks that develop the data systems and capability to curate and release LV data in a form consistent with other jurisdictions will position themselves to capture the value of emerging use cases. As such, a ‘no regrets’ research program should aid in developing:

1. A shared understanding of the common raw and processed data outputs required for different use cases to meet the range of stakeholder expectations. A particular gap is EV data use cases. 2. Collaborative digital and data infrastructure, systems and processes to support implementation of LV data that help to ’stack’ value from a range of use cases and achieve cross-jurisdictional consistency of data provision and processing, and can integrate with private or public marketplace developments.

3. Capability within networks to connect the planning and operational functions through spatial network models and data management.

S2d: Mainstreaming DER Network Support

DER devices can provide network support by shaping their operation to network conditions to improve power quality, security and reliability, contributing to improved utilisation of network hosting capacity. Drawing on findings from industry reports and stakeholder interviews, mainstreaming DER network support can be advanced through the following enabling objectives: 1. Identify the best combinations of network and non-network options to provide network support and optimise utilisation of hosting capacity.

2. Outline how the process for evaluating DER-based options for providing distribution network support can be standardised to improve DER device standards and compliance.

3. Support data sharing between networks, DERs, and third parties.

4. Improve customer engagement through education and the development of new products and services.

Combined network and non-network solution mixes are likely to vary with network location, PV penetration level and feeder type. However, research categorising fit-for-purpose approaches in representative benchmark cases will advance the most effective avenues for trials and development. Recommended research opportunities include:

• Assessing combinations of network and non-network forecasting and control solutions to optimise DER hosting capacity across representative benchmark network cases.

• Assessing opportunities for mainstreaming network support services from flexible loads (e.g., air conditioning, hot water systems, pool pumps) in combination with current priority DER (PV and battery systems).

• Assessing potential impacts to the network of synchronised responses of large fleets of DER, e.g., to sudden market or grid contingency events.

• Investigating the interaction between cost-reflective network pricing and nonnetwork solutions across different use-cases.

• Investigating the relative merits of structured ‘bulk’ procurement of network support services.

A standardised process for evaluating options for DER network support should stem from collaborative assessments, accurate models and data, and clear guidance from regulators. Recommended research advancing these objectives include: • Comprehensive cost-benefit analysis considering all DER value streams quantifying implications from customer and network perspectives.

• Analysis of customer equity aspects of DER hosting capacity allocation and network services, including impacts and limitations arising due to network location. For example, the analysis can quantify how Volt-Watt/VAR automatic inverter responses affect customers at different network locations.

DER monitoring devices can be leveraged to provide valuable LV data to increase network visibility to support network operation and planning, contributing to improve the assessment of hosting capacity and dynamic operating envelopes. Data challenges ensue as DER data streams become integral parts of networks digital infrastructure. Transparent processes on how DER data and services are managed can improve customer understanding of the benefits of DER participation and improve customer engagement. Recommended research opportunities in these areas include: • Surveying options for secure, automated data platforms that can integrate large volumes of DER data while preserving customer privacy.

• Progressing the objectives of the DER Visibility and Monitoring Best Practice guide by piloting the provision and use of a standardised set of solar PV and battery (and/or other DER) timeseries data and data management processes. Such research can assist the API task force in developing a standard API for DER communications and inform a NEM-wide standardised DER data collection and management process. • Surveying customers to assess their perception of the most equitable ways to manage network hosting capacity.