Solar PV

The Whys of String Sizing

Let’s go over the whys of string sizing. What is it and why do we do it?

String Sizing Basics

String sizing is critical when you’re putting modules in series. Remember that when you put modules in series, the voltage goes up. It’s additive. 

Another thing that makes the voltage go up is cold temperatures. That means in […]

July 1st, 2022|Categories: Megawatt Design, Solar, Solar Design & Installation, Solar miscellaneous||

New Free Course from Fronius: PV Design & Repowering with Solar.creator and Repowering Tools

The technical team from Fronius is sharing their knowledge and software tools again with the HeatSpring community – this time they’re teaching about their latest and greatest software design tools.

The Fronius Solar.creator is a free and easy-to-use online configuration tool that supports you when designing PV systems with Fronius inverters. It is connected to a […]

June 28th, 2022|Categories: Free Courses, Solar, Solar Design & Installation, Solar Product Training||

1 NABCEP CEU – New Free Course: Simplify Your System Design with Modern String Inverters by Fronius

Like much of the equipment in the solar industry, technology found in string inverters has evolved over the past 10 years. Even just a few years ago, designers would be wary using string inverters on sites with challenging roof architecture or slight shading. With modern string inverters, those concerns are rarely issues for a solar […]

June 8th, 2022|Categories: Free Courses, NABCEP, Solar, Solar Design & Installation, Solar Product Training||

New Free Course: Unirac’s Faster Solar Design with Online Tools

What tools do solar designers use to improve the speed and accuracy of their project designs? This new, free solar design course from Unirac gives you a quick introduction to many of the top solar design tools available.

I’ve always been surprised by the number of different approaches to solar design. Especially residential solar. When you’re […]

Sean White Explains AC-Coupling, DC-Coupling, and Types of Inverters

With demand increasing for energy storage, more solar customers have questions about how batteries can work with their solar systems. Let’s talk about how to couple PV and batteries as well as the various types of inverters on the market. 

There are essentially 2 different ways an inverter can output power:

Interactive, aka grid-tied, aka current mode, […]

May 25th, 2022|Categories: Solar, Solar Design & Installation, Solar Plus Storage||