Your Trusted Partner in Electrical Engineering and Power Systems
At Keentel Engineering, we deliver electrical power engineering services built on 30 years of experience and a commitment to excellence. Our clients include utilities, developers, EPCs, and public agencies across the U.S.
Unlike firms that sacrifice technical depth to chase billable hours, we prioritize precision, compliance, and value engineering. From transmission services and relay modeling to winterization and SCADA planning, we never compromise on quality.
At Keentel Engineering, we take pride in being the go-to electrical power engineering firm for power and utility system planning, substation design, protection, control, and power system analysis. The following attributes distinguish our team in utility-grade substation engineering and compliance-driven project delivery.
With three decades of hands-on project delivery, we bring unmatched expertise in substation layout design, substation electrical and civil engineering, relay protection, and grid-tie solutions. Our experience includes projects in complex terrain, urban retrofit environments, and utility-scale renewable integrations.
Our engineering process applies AutoCAD 3D, BIM modeling, and system-level substation design practices to ensure accurate planning, reduced errors, and efficient coordination across all project stakeholders.
Our workflow includes 3D substation design, enabling clash-free coordination between structural, electrical, and civil disciplines.
From grounding grid studies to relay protection settings, we engineer every detail to improve system reliability, performance, and operational safety. Our rigorous QA/QC process ensures compliance with IEEE, NFPA, and ISO/TSO interconnection standards.
Among leading electrical substation design companies, Keentel Engineering stands out for 30+ years of proven high-voltage and utility-grade project delivery.
First name, email and what you're interested in are all we need to get moving. Everything else, including drawings or an RFP, is optional.
The TPL family is small in number but large in effort. TPL-001 sets the core planning performance requirements. TPL-007 extends planning to geomagnetic disturbance events. TPL-008 adds benchmark extreme heat and cold events. All three share the same structure: build credible models, study defined events, compare the results with performance requirements and document Corrective Action Plans where the system falls short.
Because the standards share models, data and study teams, the most efficient programs plan them together rather than as three separate projects. This hub is designed to help you see that shared picture and navigate to each standard’s own page.
IDs are shown without version suffixes. TPL standards have been revised several times, and new standards phase in over multi-year implementation plans — confirm the version in effect for your facility and audit period.
| Standard (Keentel page) | Title | Applicable functions | Typical evidence |
|---|---|---|---|
| TPL-001 (Page 59) | Transmission System Planning Performance Requirements | PC, TP | Planning Assessment, study cases and contingency lists, performance evaluations, Corrective Action Plans, distribution records |
| TPL-007 (Page 60) | Transmission System Planned Performance for Geomagnetic Disturbance Events | PC, TP, TO, GO | GMD models, GIC data, vulnerability assessments, transformer thermal impact assessments, Corrective Action Plans |
| TPL-008 (Page 61) | Transmission System Planning Performance Requirements for Extreme Temperature Events | PC, TP | Extreme temperature benchmark cases, assessment results, Corrective Action Plans or documented evaluation of options |
| MOD-032 (Page 28) | Data for Power System Modeling and Analysis | PC, TP, and data providers including GO, TO, BA, RP, TSP | Modeling data requirements, data submissions, responses to technical concerns |
| MOD-033 (Page 28) | Steady-State and Dynamic System Model Validation | PC, RC, TOP | Validation process documentation and comparisons with actual system events |
| FAC-002 (Page 25) | Facility Interconnection Studies | PC, TP, TO, GO, DP | Interconnection study results and coordination records for new or materially modified facilities |
Function abbreviations: PC Planning Coordinator · TP Transmission Planner · TO Transmission Owner · GO Generator Owner · RC Reliability Coordinator · TOP Transmission Operator · BA Balancing Authority · RP Resource Planner · TSP Transmission Service Provider · DP Distribution Provider. Check Section 4 of the version in effect for your function.
| Registered function | Role in TPL | How Keentel helps |
|---|---|---|
| Planning Coordinator | Owns the planning assessments, coordinates responsibilities with Transmission Planners, distributes results | Full or partial assessments, study cases, CAP documentation, independent review |
| Transmission Planner | Performs or shares assessment work within the PC area; develops Corrective Action Plans | Study execution, contingency analysis, extreme-event cases, documentation |
| Transmission Owner | Provides model data; under TPL-007, provides transformer and GIC-related information and may own mitigation | Transformer data collection, thermal impact assessments, model data packages |
| Generator Owner | Provides model data; under TPL-007, provides information for applicable GSU transformers | GSU data packages, verified models from MOD-025 and MOD-026 testing |
Planning work runs on annual and multi-year cycles. Exact frequencies, study years and distribution timelines come from the standard version in effect and your PC’s procedures.
| Activity | Typical cadence | Standards |
|---|---|---|
| Model data collection and case building | Annual, per the PC’s modeling data requirements | MOD-032 |
| Planning Assessment | Annual | TPL-001 |
| Corrective Action Plan review and status updates | With each assessment | TPL-001, TPL-007, TPL-008 |
| GMD vulnerability and transformer thermal assessments | Recurring multi-year cycle defined in the standard | TPL-007 |
| Extreme temperature assessment | Recurring cycle defined in the standard, following the implementation plan | TPL-008 |
| Model validation against system events | Periodic, per the PC’s documented process | MOD-033 |
| Distribution of results to required entities | Within the timeframes in each standard | TPL-001, TPL-007, TPL-008 |
TPL-001, TPL-007 and TPL-008 studies in PSS®E or PSLF, full scope or selected study years and events.
A second engineering review of a PC or TP assessment against the standard before it is finalized.
Benchmark event cases with documented load, dispatch, availability and rating assumptions.
GIC modeling support and transformer thermal impact assessments for TOs and GOs.
MOD-032 submissions from TOs and GOs, including verified generator and IBR models.
Corrective Action Plan registers, status records and requirement-mapped evidence indexes.
Confirm PC, TP, TO and GO responsibilities and the standard versions in scope.
Check the base cases, dynamic data and IBR models for gaps before studies begin.
Define study years, events, contingencies and performance criteria for each standard.
Perform the studies and document every shortfall against the criteria.
Record each CAP with its owner and timetable.
Finalize the assessment, record distribution and track CAPs into the next cycle.
| Deliverable | What it gives you |
|---|---|
| TPL responsibility matrix | Who performs, supplies and reviews each piece of the family |
| Study plan | Study years, events, criteria and assumptions agreed before work starts |
| Assessment reports | TPL-001, TPL-007 and TPL-008 results with requirement cross-references |
| Model and data review memo | Issues found in base cases and dynamic data, with resolutions |
| Corrective Action Plan register | Every CAP, its owner, timetable and status |
| Evidence index | Each TPL requirement linked to its proof, including distribution records |
| Gap | Consequence |
|---|---|
| PC and TP responsibilities never written down | Requirements fall between the two entities during an audit. |
| Extreme-event assumptions left implicit | TPL-008 and TPL-007 results cannot be defended without documented inputs. |
| Generic IBR models in the base case | Stability results may not reflect how plants actually respond. |
| CAPs carried forward without status | The same deficiency appears in consecutive assessments with no progress record. |
| Transformer data missing for GMD work | Thermal impact assessments rely on assumptions instead of equipment data. |
| Distribution not evidenced | Results were shared but the entity cannot show when and with whom. |
MOD-032 supplies the planning data; MOD-025, MOD-026 and MOD-027 verify generator models; MOD-033 validates the system model.
Facility Ratings (FAC-008), SOLs (FAC-011/014) and interconnection studies (FAC-002) share models and assumptions with TPL.
Planning results feed UFLS and UVLS programs, RAS design and the element lists behind PRC-023 and PRC-026.
EOP-012 cold-weather preparedness complements TPL-008 extreme-temperature planning from the generator side.
Operating studies and SOLs draw on the same system models used in planning.
PC and TP registration determines who owns the assessments in each area.
Tell us your role, your models and what is due. Keentel will map TPL responsibilities, flag TPL-008 readiness gaps and scope the studies and CAP tracking you need.
Serving utilities, EPCs, developers, and infrastructure organizations supporting critical power systems nationwide.
