Breaking Down Berkeley Lab’s Annual Utility-Scale Solar Report – Part 1 Berkeley Lab’s annual Utility-Scale Solar Report has become one of the industry’s go-to resources for tracking the evolution of large-scale solar (and storage) deployment across the United States. The 2024 Edition analyzes ground-mounted PV projects above 5 MW ac, offering… Continue reading “Breaking Down Berkeley Lab’s Annual Utility-Scale Solar Report – Part 1”
Grid Operators Get Strategic: How Some Utilities Are Tackling Interconnection Queue Bottlenecks As the U.S. power grid faces mounting pressure to integrate new generation resources, transmission operators are getting creative with solutions to streamline their overwhelmed interconnection queues. Two major grid operators—California ISO (CAISO) and PJM —are leading the charge with innovative… Continue reading “Grid Operators Get Strategic: How Some Utilities Are Tackling Interconnection Queue Bottlenecks”
FERC Orders 1920 and 1977 – What’s the Bottom Line? The recent buzz in the electric transmission industry, which is a key part of utility-scale renewables growth, is the May 13th issuing of FERC Order 1920 and FERC Order 1977 . FERC Order 1920 FERC Order 1920, “Building for the… Continue reading “FERC Orders 1920 and 1977 – What’s the Bottom Line?”
Voltage Control Using Inverter Reactive Power Control This is the fifth of five articles in the series “Reactive Power in Utility-Scale Solar PV Applications.” In the previous four posts in this series, we discussed what reactive power is and where it comes from, its impact on T&D… Continue reading “Voltage Control Using Inverter Reactive Power Control”
Active Power Priority vs. Reactive Power Priority This is the fourth of five articles in the series “Reactive Power in Utility-Scale Solar PV Applications.” Here’s the last article – “Inverter-Based Resources Reactive Power Capabilities” – in case you need to catch up. In the earlier articles in this series,… Continue reading “Active Power Priority vs. Reactive Power Priority”
Inverter-Based Resources Reactive Power Capabilities This is the third of five articles in the series “Reactive Power in Utility-Scale Solar PV Applications.” Here’s the last article – “Reactive Power and Transmission & Distribution Operations” – in case you need to catch up. Inverters are a… Continue reading “Inverter-Based Resources Reactive Power Capabilities”
Reactive Power and Transmission & Distribution Operations This is the second of five articles in the series “Reactive Power in Utility-Scale Solar PV Applications.” In Part 1 of this series, we looked at the differences and relationship between real, reactive, and apparent power. We also looked at… Continue reading “Reactive Power and Transmission & Distribution Operations”
What Are Reactive Power and VArs? This is the first of five articles in the series “Reactive Power in Utility-Scale Solar PV Applications.” Right after I started my first job out of college, I found myself presenting at a meeting and talking about reactive power and… Continue reading “What Are Reactive Power and VArs?”
Utility-Scale Solar PV Flourishes Despite Mixed Business Conditions In September 2023, SEIA and Wood Mackenzie released its “Solar Market Insight Report Q3 2023” report. The report projects more than 20 GW of additions in utility-scale solar in 2023, up from 11.8 GW in 2022. Last month, EIA reported… Continue reading “Utility-Scale Solar PV Flourishes Despite Mixed Business Conditions”
Grading the States: Clean Energy Adoption and Access to the Grid One difficulty that solar PV and other clean-tech companies face when looking to expand their business into other states is that every state is different – different in their goals, policies, interconnection processes, technical standards, data availability, and other factors.… Continue reading “Grading the States: Clean Energy Adoption and Access to the Grid”
Power Flow Studies on Utility Distribution If you work with utility-scale or community solar PV, you may have heard the utility refer to the term “power flow study”, also called “load flow study”, and wonder what that is. Utility distribution feeders are designed and operated at… Continue reading “Power Flow Studies on Utility Distribution”
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… Continue reading “How Much Solar PV Can a Feeder Host?”
Impacts of IEEE 1547 to Developers and Engineers Working on Distribution Interconnections The latest revision of IEEE 1547TM-2018 – IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Interfaces turns five years old this year. Many solar PV developers and engineers that are just entering the industry… Continue reading “Impacts of IEEE 1547 to Developers and Engineers Working on Distribution Interconnections”
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),… Continue reading “Standards for Distributed Energy Resources Interconnecting to Utility Systems”
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,… Continue reading “New Course: Understanding IEEE 1547-2018 – The Interconnection Standard for DER on Distribution”
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. … Continue reading “Looking at North Carolina Outages and Distributed Energy Resources”
New Interconnection Standard for Energy Storage and Distribution – IEEE 1547.9 The development and publishing of interconnection standards and guides to facilitate the large numbers of grid-connected DER (Distributed Energy Resources) to utility systems in the coming years continues, with a new guide focused on energy storage. On August 5 of… Continue reading “New Interconnection Standard for Energy Storage and Distribution – IEEE 1547.9”
Transmission and Distribution Interconnection Standards – Does Your Organization Know About Them? Utility interconnection standards will be critical for increasing the connection of DER (Distributed Energy Resources), including solar PV, to distribution and transmission systems. In the US, IEEE 1547-2018 is a predominant standard, accompanied by UL 1741 for testing, that governs… Continue reading “Transmission and Distribution Interconnection Standards – Does Your Organization Know About Them?”
Why Learn About Electric Utility Distribution Equipment? Hi, my name is Tim Taylor and I have a course called “A Virtual Tour of Electric Utility Distribution Equipment“. I’ve been getting the question: “why do you have this course?”. It’s really to answer a lot of questions that… Continue reading “Why Learn About Electric Utility Distribution Equipment?”
Electric Vehicle Charging Available charging options are a key factor that will drive future sales of electric vehicles. For folks involved in distribution system planning and engineering, there are a number of concerns related to Electric Vehicle Supply Equipment (EVSE). These include: Peak… Continue reading “Electric Vehicle Charging”