Solar System Upgrades
Adapt existing solar to new loads and supported equipment.
Service Overview
Expert Solar System Upgrades in Greater St. Louis
Adding panels, changing inverters, preparing for an EV, or modifying service equipment can affect the original PV design and approvals. JL first documents the installed system and goals, then evaluates electrical, structural, equipment, warranty, and utility constraints.
What This Service Covers
- Array additions where supported
- Inverter modernization
- Solar-ready electrical panels
- EV charging coordination
- Capacity and load evaluation
When to Call an Electrician
- Energy use increased after adding an EV, heat pump, spa, or addition
- An inverter or monitoring platform is obsolete or unsupported
- A panel replacement must preserve the solar connection
- You want battery storage or added modules on an existing system
How the Work Is Planned
Document the existing system
We review plans, labels, equipment models, production history, interconnection records, roof layout, and service connection.
Check compatibility and approvals
The proposed change is evaluated against inverter limits, listing combinations, conductor and service ratings, utility rules, and available installation space.
Modify and recommission
Approved electrical changes are installed, labeled, inspected and submitted as required, then operation is verified.
Scope & Limitations
Not every system can be expanded economically. Unsupported equipment, unavailable matching modules, roof limits, interconnection caps, warranties, and proprietary platforms may require an alternative scope or prevent a proposed change.
Permits & Electrical Code
Modifications can require revised permits and utility approval. Existing rapid shutdown, grounding, service calculations, bus ratings, disconnects, labels, and listed equipment combinations must remain compliant.
Estimates & Rates
What Affects the Price?
Upgrade cost depends on documentation quality, equipment compatibility, available roof and electrical capacity, permit revisions, utility study, access, and whether legacy components must be replaced.
Frequently Asked Questions
Related Services
View All Solar ServicesThe JL Workmanship Warranty
Qualifying installation workmanship is covered by our Limited Lifetime Workmanship Warranty for as long as the original customer owns the property, subject to its terms and exclusions.
Need Service?
Get a free estimate for planned work, or request professional troubleshooting for an electrical issue.
- • Insured & Bonded
- • 10+ Years Experience
- • Owner-Operated