How Much Solar PV Can a Feeder Host?

As increasing amounts of solar PV connect to electric distribution systems, in the forms of utility-scale solar PV and behind-the-meter solar PV, a critical question that many in the industry have is “How Much Solar PV Can a Feeder Host?” The maximum amount of Solar PV that a given distribution feeder can host (or that can […]

Standards for Distributed Energy Resources Interconnecting to Utility Systems

Interconnection standards for Distributed Energy Resources (DER) connecting to utility transmission and distribution systems have evolved and will continue to change in the coming decades.  DER includes inverter-based resources (IBR), such as solar PV, battery energy storage, and vehicle-to-grid (V2G), but also synchronous machine-based generation and other types of generation.

For people involved in DER interconnection […]

New Course: Understanding IEEE 1547-2018 – The Interconnection Standard for DER on Distribution

HeatSpring is pleased to announce a new course focusing on IEEE 1547-2018, the interconnection standard for Distributed Energy Resources (DER) on utility distribution systems.  Understanding IEEE 1547-2018 – The Interconnection Standard for DER on Distribution, will launch in February 2023, and you can now sign up, in advance, for the course on HeatSpring.  

IEEE 1547-2018, IEEE […]

Looking at North Carolina Outages and Distributed Energy Resources

An incident occurred in central North Carolina on the evening of December 3, 2022, about 45 minutes from where I live, in which equipment in two substations was made inoperable by gunfire.  The result was approximately 40,000 customers without power.  As of the morning of December 6, the outage map of Duke Energy, which serves […]

New Free Course: Inflation Reduction Act: Energy Storage and Solar Tax Credits

The Inflation Reduction Act (IRA) of 2022 was signed into law on August 16th, 2022, providing a historic $369 billion of clean energy and climate investments over the next 10 years. The expert  team at Energy Toolbase has been diving deep into the energy storage and solar tax provisions within the bill, to understand how […]