Every recent build
Utility-scale solar
Twin collector step-ups for a utility-scale solar site, OLTC-equipped for the utility system.
Utility-scale solar
Third unit on the same solar interconnect — 33/44/55 MVA with on-load tap changing.
Data center campus
Eight units for a single campus — first deliveries made Q4 2025, the balance lands Q3 2026.
Hyperscale data center
Campus substation unit delivered to the utility interconnect schedule.
Utility substation
138 kV OLTC unit built to a 650 kV BIL for a utility substation.
Industrial campus
Four matched units stepping 138 kV down to a 34.5 kV campus distribution system.
HPC / digital mining
Three units energizing a high-density compute site on the utility system.
Colocation data center
36/46/56 MVA at 650 kV BIL for a colocation hall on the utility system.
Contractor-led build
Built alongside the site's electrical contractor — delivered ready to set and energize.
HPC / digital mining
Single 69 kV unit powering a high-density compute site — pad to power on one order.
Industrial site
69 kV to 13.8 kV site power for a heavy industrial load.
Contractor-led build
Two 115 kV units delivered through the site's electrical contractor — set, tested, energized.
Data center campus
Data-hall distribution at 415Y with sudden-pressure and winding-temperature protection spec'd in from the first drawing.
Electric cooperative
Substation step-down bid with guaranteed load and no-load losses — the evaluation math you run is the performance you get.
Gas processing site
Step-up rated for generation duty, with K-4 harmonic capacity and an electrostatic shield for drive-heavy loads.
Midstream operator
A dual-voltage switch and custom tap arrangement let one unit follow the system through a voltage conversion.
Utility-scale solar
Collector duty with three 2-position LBOR switches, a custom HV bushing chamber, and copper LV bus.
Gas compression plant
MIDEL synthetic fluid and an external fan package for hard-running 4,160 V compression loads.
Community solar
Collector step-up with alarm contacts and a custom X/R ratio to match the interconnect study.
Manufacturing plant
Copper windings in a NEMA 4 enclosure on anti-vibration pads — built for a washdown floor.
Distributed solar
Alarm contacts and external-cabinet terminal blocks, finished in ANSI 70 light gray to the site standard.
Commercial development
A straightforward 13.8 kV to 480 V service unit — quoted, built, and delivered to schedule.
Regional hospital
Campus service transformer with the cutover coordinated around an occupied healthcare facility.
Industrial facility
55/65 °C rise and 6% impedance to drop into the existing switchgear lineup without a coordination redo.
Commercial facility
Copper windings in FR3 natural-ester fluid for added fire safety at the service entrance.
The full story on the hard ones
Fast-Track Power for a Hyperscale Data Center Hall
A hyperscale operator needed redundant transformer capacity for a new compute hall months ahead of standard OEM lead times. JCL pulled matching units from stock and ran phased delivery against the construction schedule.
Read the case study →Substation Upgrade for a Rural Electric Cooperative
A rural electric cooperative needed to upgrade an aging substation to serve growing load before peak season — under a regulatory clock and OEM lead times that wouldn't make it. JCL matched stocked units to the existing infrastructure and delivered ahead of the deadline.
Read the case study →Collector Substation for a Utility-Scale Solar Project
A utility-scale solar developer lost their original transformer supplier mid-project and faced a commercial-operation deadline tied to their interconnection agreement. JCL sourced grid-tie units that met the interconnection spec and coordinated heavy-haul delivery to a remote site.
Read the case study →