Substations, power lines, and complete electrical systems for commercial, industrial, and infrastructure clients across PR and USVI — PE-stamped, code-compliant, and engineered for the realities of Caribbean operating conditions.
Plenty of firms can produce an electrical drawing. Fewer can produce one that actually installs cleanly on a Puerto Rico site — accounting for available materials, regional construction practices, weather realities, and the operating environment our systems live in.
JDR's power and electrical practice is rooted in two decades of field installation experience. Every design we produce reflects what we've learned from building these systems — not just specifying them.
Substation design, equipment selection, protection schemes, and overhead/underground power line engineering — sized to operational needs and engineered to PR regulatory requirements.
Service entrance, distribution panels, branch circuits, motor controls, and emergency power systems for commercial, industrial, and institutional clients.
Generator sizing and selection, ATS specification and integration (including ASCO controls), and coordination with PV and battery storage systems for hybrid resilience.
Load study, existing conditions assessment, utility coordination, and a clear definition of operating requirements and resilience targets.
System design, equipment selection, short-circuit and arc-flash studies where applicable, protective coordination, and PE-stamped construction documents.
Construction permits, contractor coordination, RFI/submittal review, and on-site construction inspections to verify installation against design intent.
Acceptance testing, ATS function verification, generator load bank testing, as-built documentation, and an operations handoff package.
Residential standby power upgrade. ASCO 185-series ATS configured for single-phase service, integrated with a Caterpillar generator running EMCP controls, plus Shelly Pro 2PM smart logic for retransfer and generator shutdown coordination.
Power line and substation engineering projects across PR and USVI for utility and infrastructure clients. Scope ranges from new feeder construction to substation modifications and protective coordination updates.
Service entrance upgrade for a commercial facility — load analysis, utility coordination, distribution redesign, and construction inspection — completed with minimum disruption to ongoing operations.
NFPA 70E for arc-flash and electrical safety practices.IEEE 80 for substation grounding, IEEE C2 (NESC) for overhead and underground line construction, and applicable LUMA/PREPA construction standards.NFPA 110 for emergency and standby power systems, NEC 700/701/702 for emergency, legally required, and optional standby systems. ATS specification per UL 1008.NEC Article 250, IEEE 80/81/142, and Motorola R56 where telecom-grade grounding is required.IEEE 141 (Red Book), protective coordination per IEEE 242 (Buff Book), arc-flash incident energy per IEEE 1584.For many electrical projects, yes — design through installation under one accountable team is a core part of our value. For larger substation and utility-scale projects, we provide engineering and construction inspection while specialized contractors execute the install under our oversight.
Yes. Utility coordination — including service applications, witness testing, and construction standard compliance — is part of every project that requires it.
That's one of our specialties. The challenge in hybrid systems is the logic — how priorities shift between solar, battery, generator, and grid as conditions change. We design these systems holistically rather than treating each piece in isolation. Renewable Energy →
Yes — arc-flash incident energy analysis per IEEE 1584, with labeling and PPE recommendations consistent with NFPA 70E. We provide this as a standalone service or as part of larger electrical engineering projects.
From a single ATS integration to a substation design or full service upgrade — tell us about your project and we'll respond within one business day.