Blog
August 4, 2026
Resources and Glossary of Repowering Terms
Tigo Resources
Tigo Academy | URL: https://www.tigoenergy.com/tigo-academy
Free online training to help installers expand their knowledge of Tigo products, system design, commissioning, monitoring, and best practices.
Green Glove Service | URL: https://www.tigoenergy.com/green-glove-service
Get expert assistance with system design, product selection, commissioning, and technical support for upcoming projects.
Tigo Support Center | URL: support.tigoenergy.com
Technical articles and support for installing, commissioning, monitoring, and troubleshooting Tigo systems.
Tigo EI Residential Solution | URL: https://www.tigoenergy.com/go-optimized-ess
Learn more about Tigo's inverter, battery storage, monitoring platform, and complete residential energy solution.
Industry Resources
NABCEP (North American Board of Certified Energy Practitioners) | URL: https://www.nabcep.org
Industry-leading certification, continuing education, and installer training.
SEIA (Solar Energy Industries Association) | URL: https://seia.org
Market reports, industry trends, policy updates, and educational resources.
EnergySage | URL: https://www.energysage.com
Homeowner education on solar, batteries, financing, and system upgrades. Helpful for understanding customer questions and market trends.
DSIRE | URL: https://dsireusa.org
Database of federal, state, and local solar incentives, tax credits, and renewable energy policies.
DOE Integrated Energy Systems | URL: https://www.energy.gov/cmei/systems/integrated-energy-systems-office
Research, publications, and educational materials on solar technologies and grid modernization.
Recommended Business Resources
CRM
Use a CRM to track existing customers, schedule system health checks, manage follow-ups, and create recurring repowering opportunities.
Google Business Profile
Many homeowners begin with a Google search when experiencing production issues. Keeping your profile current with reviews, photos, and services improves local visibility.
Email Marketing
Stay connected with past customers through seasonal maintenance reminders, battery announcements, and educational content.
SEO & AIEO (AI Engine Optimization)
Optimize your website and content for both search engines and AI-powered search experiences. Publish helpful, authoritative content that answers homeowner questions about inverter replacement, battery retrofits, monitoring upgrades, and solar repowering so your business is discoverable through Google Search, ChatGPT, Gemini, Perplexity, and other AI assistants.
Customer Referral Program
Satisfied repowering customers are often your best marketing channel. Establish a referral program that rewards introductions and encourages repeat business.
GLOSSARY
Solar Repowering Glossary - A quick reference guide to the most common terms, technologies, and acronyms used throughout this eBook.
How to Use This Glossary - Whether you're new to repowering or expanding your existing business, understanding the terminology is essential. Use this glossary as a reference whenever you encounter unfamiliar terms related to solar equipment, system upgrades, energy storage, or repowering projects.
A
AC (Alternating Current)
The type of electricity used by homes and businesses after an inverter converts the DC electricity produced by solar panels.
AHJ (Authority Having Jurisdiction)
The local organization or government agency responsible for approving electrical installations and enforcing building and electrical codes.
B
Battery Energy Storage System (BESS)
A battery system that stores excess solar energy for later use, backup power, or load shifting.
BOS (Balance of System)
All solar system components other than the PV modules, including wiring, mounting hardware, inverters, disconnects, and electrical equipment.
C
C&I (Commercial and Industrial)
Solar installations serving businesses, industrial facilities, schools, municipalities, and other nonresidential applications.
Commissioning
The process of verifying that a newly installed or upgraded solar system is operating safely and performing as designed.
D
DC (Direct Current)
The type of electricity generated by solar modules before being converted into AC electricity by an inverter.
Diagnostic Assessment
A professional evaluation of an existing solar system used to identify performance issues, aging equipment, safety concerns, and upgrade opportunities before recommending a repowering solution.
E
EV Charger
Equipment used to charge electric vehicles, often added as part of a broader home energy modernization strategy.
I
Inverter
The device that converts DC electricity from solar panels into AC electricity that can be used by a home or business.
IPOC (Independent Power Optimization Compatibility)
Tigo's technology that enables the EI Inverter to work with optimized PV systems while providing greater flexibility during repowering projects.
M
MLPE (Module-Level Power Electronics)
Electronics installed at each solar module that provide functions such as optimization, monitoring, or rapid shutdown.
Module-Level Monitoring
The ability to monitor the performance of individual solar modules rather than viewing production only at the inverter or system level.
N
NEM (Net Energy Metering)
A utility billing program that provides credit for excess solar electricity exported to the grid. Changes to NEM policies often create repowering opportunities.
O
Optimization
The process of improving a solar system's performance through technologies that reduce mismatch losses, shading impacts, or equipment limitations.
P
PV (Photovoltaic)
Technology that converts sunlight directly into electricity.
Power Optimizer
A type of MLPE that maximizes the performance of individual solar modules while providing module-level visibility.
R
Repowering
The process of upgrading or modernizing an existing solar system by replacing aging equipment, improving performance, adding new technologies, or preparing the system for future expansion.
Rapid Shutdown (RSD)
A safety function that reduces voltage within a solar PV system during emergency situations, allowing first responders and maintenance personnel to work in a safer electrical environment.
S
Service Agreement
An ongoing maintenance or support contract that provides customers with scheduled inspections, monitoring, and preventive maintenance after a repowering project is completed.
String Inverter
An inverter connected to multiple solar modules wired in series to form a string.
T
Thermal Event
An overheating condition within electrical equipment that may result from component failure, damaged wiring, poor connections, or other system issues requiring investigation.
U
Utility Interconnection
The process of connecting a solar energy system to the local electric utility and receiving approval to operate.
Final Thoughts
Solar repowering is evolving from a niche service into a core business opportunity. As solar systems continue to age, homeowners will increasingly look for trusted professionals who can restore performance, improve reliability, and prepare their systems for the future.
Whether you're completing your first repowering project or building a dedicated line of business, the strategies in this guide are designed to help you create lasting customer relationships, deliver exceptional value, and build a sustainable business for years to come.
Thank you for reading, and here's to building the next generation of solar success through repowering.
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Below is a full list of chapters included in this series:
- Summary: The Solar Repowering Opportunity
- Why Repowering Has Become a Major Growth Market
- Building a Profitable Solar Repowering Business
- How to Package and Sell Solar Repowering Services
- Finding Solar Repowering Customers
- Launching Your Repowering Business in 90 Days
- Building a Sustainable Solar Repowering Business
- Resources and Glossary of Repowering Terms
