by Sara Baldwin
More states and utilities are beginning to adopt new tools and approaches to reform how the electric distribution system is planned and operated. The nuances of these grid modernization efforts may go unnoticed by the average consumer or clean energy developer, but the details are critically important to ensuring that the result is meaningful reforms that enable more customer-sited clean energy resources, beneficial for the grid and all ratepayers.
Key drivers for these efforts include state clean energy policy goals, such as Nevada’s Senate Bill 146 (2017), designed to facilitate the integration of more customer-driven distributed energy resources (DERs) – such as rooftop solar, energy storage, and/or electric vehicle charging stations – and support cost-effective investments in a more modern, clean and resilient grid.
Nevada is one of a handful of states to adopt legislation directing its public service commission and regulated investor-owned utility to initiate a comprehensive distribution resource planning (DRP) reform effort. Over the past two years, IREC has engaged in the regulatory proceeding to implement SB 146, working alongside NV Energy (NVE), Western Resource Advocates (WRA), Vote Solar, the Bureau of Consumer Protection and other clean energy industry stakeholders to establish a framework for NVE’s DRP.
Per the legislation, the Nevada Public Utilities Commission directed NVE to develop several new tools that make up the newly established DRP framework, including load/DER forecasting, hosting capacity analysis (HCA), grid needs assessment and locational net benefits analysis to identify nontraditional solutions to grid constraints. All of these will help enable greater grid transparency and support the optimized, efficient and cost-effective deployment of DERs.
At the end of July, following several months of stakeholder negotiations, the Nevada commission approved NVE’s first DRP (filed in April 2019). IREC and NCARE (representing WRA, Natural Resources Defense Council, Sierra Club, Southwest Energy Efficiency Project and other groups) intervened to evaluate the DRP and ensure its adequacy under the adopted regulations. Notably, the DRP included NVE’s first HCA of its entire distribution system.
The HCA is an analytical tool that provides insight into the conditions of the distribution grid and conveys its ability to “host” additional DERs at specific locations on the grid. Offered in a publicly accessible online format, NVE’s HCA will provide developers, customers, the utility and regulators with more information to help inform and shape the planning process, as well as streamline interconnection of more DERs.
The HCA included with NVE’s first DRP filing includes hosting capacity results for thermal and voltage criteria and, starting in June 2020, NVE will add hosting capacity results for protection and operational reliability criteria.
As a result of the negotiations preceding the commission’s approval of the DRP, NVE committed to make additional improvements to its HCA and the web portal, adding more user-friendly features. Included are pop-up boxes showing existing and queued generation at the feeder and substation level, load profiles for feeders that have sufficient load data, and a downloadable user guide. NVE committed to making the first set of downloadable HCA data available by the end of 2019, including downloadable data aggregated from across NVE’s entire system. The utility also committed to continue working on updating the online HCA data on a more frequent basis (more than its current monthly schedule).Over the past two years, IREC has engaged in the SB 146 regulatory proceeding, working alongside NV Energy, Western Resource Advocates, Vote Solar, Bureau of Consumer Protection and other stakeholders to establish a framework for NVE’s DRP. Click To Tweet
In addition to the HCA, NVE’s DRP includes an analysis comparing the net benefits of using energy storage alternatives to defer specific transmission and distribution upgrades to its system. This important component of the DRP is intended to help support more strategic and cost-effective grid investment decisions and deployment of DERs to meet known grid needs. However, ongoing improvements will likely be necessary to support the widespread deployment of cost-effective DERs on the grid.
Beyond the near-term improvements to the DRP, on the horizon are efforts to incorporate the HCA into the next update of NVE’s interconnection rules in the next few years, focusing on facilitating more energy storage and additional efforts to streamline the process to connect to the grid.
IREC commends Nevada’s continued progress on this effort and ongoing commitments by all parties to get the rules right to expand clean energy opportunities across the state.