Preventative
Maintenance
Inspections, cleanings, and inverter checks to keep you at peak output.
↗Commercial & agricultural solar O&M
Recover the production
your solar asset should deliver.
Dedicated monitoring, maintenance, repair, performance optimization, and asset management for commercial and agricultural solar systems across California’s Central Valley and Central Coast.
24/7system monitoring
and rapid response
and rapid response
01 Get to know us
Illustrative production-loss scenario
A 5% gap can equal
$28,000 per year.*
Small performance gaps compound quickly.
*Example assumptions: a 1 MW system producing 1,600 MWh annually, a 5% production gap, and energy valued at $0.35/kWh. Actual results vary by site, equipment, weather, tariff, and operating conditions.
Assess your site’s performance →Performance Baseline
Priority Action Plan
Repair & Verification
+200 MW
Solar capacity serviced and repaired
across commercial and agricultural assets
As of August 2026
02 What we do
Services built around uptime
Protect every watt.
Preserve every dollar.
Ongoing service, repair, performance optimization, and asset management built to protect your investment and maximize production.
Preventative
Repairs &
Corrective
Fast fault fixes and component swaps to minimize expensive downtime.
↗Performance
Optimization
Diagnostics, testing, and targeted corrective work designed to recover lost production.
↗24/7
Monitoring
We watch your system around the clock to protect production.
↗Emergency
Response
Fast notifications and prioritized repairs when the situation is critical.
↗Asset
Management
Performance reporting, service coordination, and lifecycle planning that protect long-term asset value.
↗Central Inverter
Service
Specialized maintenance, repair, and troubleshooting to restore dependable inverter operation and recover production.
- Preventative maintenance and inspections
- Alarm and fault-code troubleshooting
- Repair and component replacement
- Performance testing and return-to-service verification
03 Where we work
California regional coverage
One service partner.
Two operating regions.
TerraSun supports commercial and agricultural solar assets from Arvin through Butte County in the Central Valley and across key Central Coast markets.
Central Valley
Service coverage through Kern, Tulare, Kings, Fresno, Madera, Merced, Stanislaus, San Joaquin, Sacramento, Yolo, Colusa, Glenn, Sutter, Yuba, and Butte counties.
Explore Valley coverage ↗Central Coast
Service coverage across Santa Barbara, San Luis Obispo, Monterey, San Benito, and Santa Cruz counties.
Explore Coast coverage ↗04 Answers at a glance
Commercial solar service, clearly defined
The essential facts.
Without the guesswork.
Direct answers for owners and operators evaluating solar operations, maintenance, repair, and performance support in California.
What does TerraSun Energy Services do?
TerraSun provides commercial and agricultural solar operations and maintenance, preventative maintenance, corrective repair, central inverter service, 24/7 monitoring, performance optimization, and asset management.
Review all services ↗Where does TerraSun provide solar operations and maintenance?
TerraSun supports solar assets across California’s Central Valley from Arvin and southern Kern County through Butte County, and across the Central Coast counties of Santa Barbara, San Luis Obispo, Monterey, San Benito, and Santa Cruz. Exact availability depends on site location and service scope.
Explore service coverage ↗What types of solar sites does TerraSun support?
TerraSun supports agricultural, commercial, industrial, municipal, school, and water-district solar assets, including ground-mount, rooftop, and carport systems.
See supported markets ↗Can TerraSun service a solar system it did not install?
Yes. TerraSun begins by reviewing the existing equipment, site documentation, performance history, and current condition, then establishes an appropriate service scope around the asset as it exists.
See how service begins ↗05 How it works
A complex process made simple
From lost output
to peak performance.
Too many systems are left without the ongoing service needed to deliver on the promises made at installation. We keep repairs, maintenance, and performance improvement moving forward.
Start with an assessment →01
Consult our expert team
We begin with a site assessment, identify the gaps, and give you clear options.
02
We handle initial repairs
Our in-house technicians bring underperforming equipment back online.
03
Reap the benefits
We monitor and maintain your site so your return reaches its full potential.
06 Get in touch
Our team is on standby
Get a free
performance analysis.
Tell us about your system. We’ll review its current performance and give you clear recommendations to maximize efficiency, reliability, and long-term returns.
Call or text today(855) 65-TERRA