What is the 120% “Rule” in Solar PV Design? If you’ve spent any time learning about solar PV systems, you’ve probably heard someone mention the 120% “rule.” It turns out that it’s not actually a rule at all. It’s one of several options for connecting solar to the utility… Continue reading “What is the 120% “Rule” in Solar PV Design?”
How Tax Credit Deadlines Are Overwhelming Utility Interconnection Queues The Inflation Reduction Act’s tax credits were designed to accelerate clean energy deployment. With tax credits prematurely winding down, solar professionals are having to juggle multiple critical timelines with their projects. That’s because the customer tax credit eligibility doesn’t just… Continue reading “How Tax Credit Deadlines Are Overwhelming Utility Interconnection Queues”
How Solar Companies Can Get Ahead of Interconnection Challenges Across the country, many solar companies are following the same pattern. They build their interconnection processes around current conditions, assuming approvals will keep flowing seamlessly. The challenges start when saturation hits their local circuits and delays start to become more… Continue reading “How Solar Companies Can Get Ahead of Interconnection Challenges”
Common Misconceptions About Interconnection When interconnection problems arise, it’s easy to assume the utility is the villain by actively blocking clean energy projects or acting in bad faith. In some instances, that can be true. It turns out the reality is far more complex… Continue reading “Common Misconceptions About Interconnection”
Why Solar Professionals Can’t Afford to Ignore Interconnection Anymore The assumption that solar projects submitted to utilities would automatically be approved used to be standard operating procedure in jurisdictions with established interconnection policies. Unfortunately, those days are over in many places. As solar deployment has accelerated, interconnection delays and… Continue reading “Why Solar Professionals Can’t Afford to Ignore Interconnection Anymore”
Why DC-Coupled Solar Plus Storage Is Finally Ready to Take Off For years, DC-coupling was the way off-grid systems worked. Then AC-coupling took over. Now, interconnection bottlenecks and new tax incentives are bringing DC-coupling back – this time at commercial scale. HeatSpring instructor Wes Kennedy walks through the economics and engineering:… Continue reading “Why DC-Coupled Solar Plus Storage Is Finally Ready to Take Off”
The Difference Between Load-Side & Supply-Side Connections: Sean White Explains The distinction between load-side and supply-side connections is fundamental to solar and energy storage installations, yet the terminology keeps evolving, and the common terms don’t always match what’s actually in the code. In the video below, HeatSpring instructor Sean White… Continue reading “The Difference Between Load-Side & Supply-Side Connections: Sean White Explains”
Why Do Electrical Panels Often Have More Loads Than Supply? Have you ever added up all the breakers in an electrical panel and realized the total capacity of all those breakers exceeds what the main service can actually supply? If you’re like most people, this raises the question: why would… Continue reading “Why Do Electrical Panels Often Have More Loads Than Supply?”
How Do Battery Systems Maintain Grid Frequency? When a heat wave hits and entire cities crank up their air conditioning simultaneously, we rarely think about what keeps our electrical grid humming at exactly the right frequency. But grid frequency is critical – too high or too low,… Continue reading “How Do Battery Systems Maintain Grid Frequency?”
How Does Energy Bidding Work for Battery Systems in Power Markets? Understanding how battery systems participate in power markets can seem complex at first, but the fundamentals are surprisingly straightforward. The basics of energy bidding are essential knowledge for anyone working in the utility-scale energy storage space – from entrepreneurs and… Continue reading “How Does Energy Bidding Work for Battery Systems in Power Markets?”
Why Does EV Charger Energization Efficiency Matter & What Challenges Can Local Government Address? The U.S. will need nearly 28 million charging ports by 2030 to meet projected EV adoption – a massive expansion from today’s charging network. Local governments play a critical role in ensuring this infrastructure can be deployed quickly and efficiently.… Continue reading “ Why Does EV Charger Energization Efficiency Matter & What Challenges Can Local Government Address?”
A Look at Two Types of Battery Installations: Front of the Meter and Behind the Meter Where you install a battery system – and which side of the electricity meter it sits on – fundamentally changes how it operates and who benefits from it. There are two primary configurations for battery installations: front of the meter… Continue reading “A Look at Two Types of Battery Installations: Front of the Meter and Behind the Meter”
IREC’s New Courses on EV Charging Infrastructure I’m hyped up about a new partnership between HeatSpring and the Interstate Renewable Energy Council (IREC) to help utilities and local governments deploy electric vehicle charging infrastructure more efficiently. The journey from planning to powering up can make or break… Continue reading “IREC’s New Courses on EV Charging Infrastructure”
New Course Announcement: Avoiding Main Panel Upgrades Home electrification is accelerating rapidly, but there’s a bottleneck that’s been frustrating homeowners and professionals alike: the dreaded main panel upgrade. If you’ve worked on the residential side, you know the story all too well. A homeowner wants to install… Continue reading “New Course Announcement: Avoiding Main Panel Upgrades”
New Free Course Announcement: Introduction to Software for Battery Systems While utility-scale solar and battery systems are transforming our energy infrastructure, finding comprehensive, accessible education on the software that powers these systems can be challenging. Most available training focuses on hardware components or high-level energy concepts, but there are limited… Continue reading “New Free Course Announcement: Introduction to Software for Battery Systems”
Inside Substation Transformers Electric power substations serve as the critical connection points that keep our entire power system functioning – linking generation to transmission, connecting different voltage levels from 69 kV all the way up to 765 kV, and providing power to major… Continue reading “Inside Substation Transformers”
“Residential Grid-Tied Solar Design” – A New Course to Build Your Design Skills Interested in designing residential solar systems that meet code requirements? Want to master industry design tools that solar professionals use? Curious about how to calculate proper system sizing, wire gauge, and conduit dimensions? HeatSpring’s new, comprehensive “Residential Grid-Tied Solar Design”… Continue reading ““Residential Grid-Tied Solar Design” – A New Course to Build Your Design Skills”
Understanding the Organizations Working in Transmission Interconnecting solar and storage projects at the transmission level is far more complex than interconnection at a smaller scale, and the challenge is growing. According to the Department of Energy’s 2024 Transmission Interconnection Roadmap, while the early 2000s saw around… Continue reading “Understanding the Organizations Working in Transmission”
A Look at a Utility-Scale Solar Site Plan Understanding how to analyze and plan utility-scale solar sites has become increasingly critical, with over 195 GWdc of utility-scale solar projected to be added to the U.S. power grid between 2024-2029 (Source: SEIA Solar Market Insight Report Q4 2024). In… Continue reading “A Look at a Utility-Scale Solar Site Plan”
Announcing Comprehensive Utility-Scale Solar Engineering Training The utility-scale solar sector is booming – solar now represents 64% of all new electricity-generating capacity in the US, with the utility-scale segment installing a record 6.6 GWdc in Q3 2024 alone, up 44% from the previous year (Source: SEIA… Continue reading “Announcing Comprehensive Utility-Scale Solar Engineering Training”