Energy Systems Engineering — P5

ENERGY.ENERGYSY231C.P5

P5P5 — Expert Professionalhigh0.90approvedglobalv1

Designs, models, and delivers solar photovoltaic (PV) energy systems across their full lifecycle — from site assessment and energy yield simulation through electrical single-line design, NEC Article 690 code compliance, interconnection, and commissioning. Distinct from sibling focuses in wind, geothermal, or grid/transmission engineering: this focus centers on PV-specific technology (panels, inverters, charge controllers, battery storage), solar energy yield optimization, and solar-specific tooling (PVsyst, HelioScope, Aurora Solar, PVcase).

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Level

P5 · P5 — Expert Professional · 8–12 yrs

Function · Focus

Energy & Resource Engineering · Energy Systems Engineering

Market pay (median)

$138k ($109k–$176k)

Pay basis

function-anchored · wide bars

Focus — Energy Systems Engineering

Material PAY and SKILL differential vs the function baseline.

Responsibilities by level

What this person actually does at each level on the professional track — escalating scope, not one generic blob. Your level is highlighted.

Supports the design, development, and implementation of solar PV systems under close supervision, following detailed instructions and established procedures
Assists in modeling solar PV arrays using PVsyst and AutoCAD, producing initial layouts and shading inputs for review by senior engineers
Conducts site assessments and feasibility data collection, documenting roof/ground conditions, orientation, and obstructions
Supports preparation of engineering reports and technical documentation such as panel schedules and connection diagrams
Participates in field inspections and testing of installed solar systems to verify compliance with design specifications and safety standards

Takes primary responsibility for smaller PV system designs and supporting elements of larger initiatives, applying defined design procedures with general instruction
Performs energy yield modeling and electrical single-line development in HelioScope or Aurora Solar, sizing conductors and applying voltage-drop calculations
Leads a solar PV project through its full sequence — pre-design, contract review, design/engineering, installation support, post-installation, and permission to operate — on conventional-scope projects
Applies NEC Article 690 and local building codes to interconnection submittals and permit packages, resolving routine plan-check comments
Pursues PE licensure by completing the experience requirement and preparing for the PE exam, while mentoring entry-level engineers on tools and standards

Independently owns system designs, client technical relationships, and project delivery across a diverse range of PV projects, with milestone review by senior staff
Performs energy yield analysis and optimization, evaluating temperature coefficients, degradation, and inverter selection to maximize predicted annual output
Develops complete project documentation including electrical single-line diagrams, panel schedules, shading analysis, and 3D layouts
Coordinates project activities across cross-functional teams to meet design and installation milestones, resolving identifiable technical trade-offs
Conducts financial and bankability analysis — payback period, LCOE, and ROI modeling — to support client and design decisions

Leads the design and implementation of complex solar energy systems with functional impact across project portfolios, selecting methods and design approaches
Oversees development of project plans including system specifications, electrical schematics, and installation guidelines, performing in-depth analysis of complex design variables
Specializes in a defined project class — utility-scale, integrated storage, or commercial developments — applying deep PV and power-systems expertise
Conveys complex technical concepts to non-technical clients and stakeholders, and may lead engineering project teams
Mentors junior and mid-level staff and makes final technical decisions on assigned projects

P5this profile

Acts independently on strategic and unique PV engineering assignments that contribute to company objectives, navigating intangibles and ambiguity
Defines optimization and yield methodologies for high-value or first-of-kind solar-plus-storage projects, resolving issues without established precedent
Serves as an external technical spokesperson on solar design with clients, utilities, and interconnection authorities, building influential networks
Drives standardization of engineering deliverables, code-compliance practices, and design-review processes across multiple project teams
Provides expert technical guidance on barriers-to-entry challenges such as complex interconnection, grid-impact, and advanced battery storage integration

Oversees high-impact PV programs and engineering staff in a leadership role, guiding technical direction across multiple departments
Designs high-level system architecture and sets the technical direction and engineering standards that align with overall company objectives
Plans long-term engineering strategy and oversees R&D and innovation efforts in PV technology, storage integration, and yield optimization
Sets department goals and provides expert technical advice to senior engineers and project teams on field-shaping design problems
Mentors engineering teams and influences peer professionals and industry practice on solar energy systems engineering

Level guidelines

The universal leveling rubric applied to this function — how scope, complexity, collaboration, and experience step up across levels.

Level	Knowledge & Application	Complexity & Problem Solving	Collaboration & Interaction	Typical Degree & Years
P1	Applies foundational circuit analysis, PV component knowledge, and codes learned in education to routine, well-defined design and assessment tasks using PVsyst and AutoCAD under detailed direction.	Solves routine problems with standard answers, such as basic layout edits and documentation, escalating anything outside established procedures.	Maintains stable internal relationships within the engineering team; receives close guidance from senior engineers.	0–1 years; new graduate or intern, often pursuing EIT/FE.
P2	Applies conventional PV design procedures, NEC Article 690, and voltage-drop/conductor-sizing calculations with moderate judgment in familiar contexts using HelioScope or Aurora Solar.	Exercises judgment on moderate-scope problems, resolving routine plan-check comments and conventional design choices with some independence.	Builds productive project relationships with installers, plan reviewers, and clients; may mentor entry-level engineers.	2+ years with a BA/BS, or MS/PhD with no experience; on PE track.
P3	Applies broad PV design, energy-yield, and financial-analysis expertise across diverse project types, independently planning work with milestone review.	Evaluates identifiable technical and economic factors — inverter selection, degradation, LCOE — to optimize designs across varied projects.	Networks with senior professionals and clients; coordinates cross-functional project activities to meet milestones.	5+ years (BA), 3 years (MA), or PhD without experience; PE typically attained or imminent.
P4	Applies in-depth, specialized expertise in a PV project class (utility-scale, storage, commercial), selecting design methods for complex systems with functional impact.	Performs in-depth analysis of complex design variables, leads optimization, and makes final technical decisions on assigned projects.	Coordinates across engineering, construction, and client groups; influences project decisions and may supervise teams.	8+ years, often with graduate education and PE licensure.
P5	Applies expert, often unique mastery of PV systems engineering to strategic and first-of-kind assignments, resolving intangibles with high independence.	Solves significant problems without precedent — complex interconnection, grid-impact, advanced storage — shaping methods and standards.	Builds influential networks; serves as external technical spokesperson with utilities and clients; mentors across teams.	12+ years with extensive PV and power-systems expertise.
P6	Applies field-defining vision to organization-wide PV engineering strategy, architecture, and R&D direction across multiple departments.	Provides visionary, field-shaping problem-solving on the most critical and broad design challenges in solar energy systems.	Influences industry and company practice as a recognized thought leader; provides high-level mentorship to senior engineers and peers.	15+ years; principal expert, often PhD plus industry leadership and PE.

Skills

Focus-specific skills the role applies — the relevance layer beyond the occupational base.

Circuit analysis and power systems: Deep understanding of circuit analysis, power systems, and electrical safety codes, applying Ohm's Law, calculating voltage drop, sizing conductors, and designing protective systems.
PV system knowledge: Knowledge of solar panel technology, inverters, charge controllers, and battery storage systems, including efficiency ratings, temperature coefficients, and degradation patterns.
Energy yield simulation: Performs computer simulation of PV generation system performance to optimize efficiency and predict annual energy output.
Codes and standards compliance: Applies NEC Article 690 covering solar installations, local building codes, utility interconnection standards, IEC, and state-specific regulations.
Engineering deliverables: Creates electrical single-line diagrams, panel schedules, connection diagrams, shading analysis, system sizing, and 3D layouts.
Financial and business analysis: Calculates payback periods, net present value, levelized cost of energy, and ROI, and builds financial models showing bankability and system performance.
Critical Thinking: Uses logic and reasoning to identify strengths and weaknesses of solutions and approaches.
Reading Comprehension: Understands written specifications and technical documents.
Communication: Writes technical proposals, presents system designs to clients, explains complex concepts to non-engineers, and coordinates with stakeholders.
Mathematics: Applies mathematics to solve engineering and analysis problems.
PVsyst: Uses this tool/technology effectively during the delivery of day-to-day tasks.
AutoCAD: Uses this tool/technology effectively during the delivery of day-to-day tasks.
PVcase: Uses this tool/technology effectively during the delivery of day-to-day tasks.
HelioScope: Uses this tool/technology effectively during the delivery of day-to-day tasks.
Aurora Solar: Uses this tool/technology effectively during the delivery of day-to-day tasks.
Google SketchUp: Uses this tool/technology effectively during the delivery of day-to-day tasks.

Provenance

The evidence base behind this profile — every layer is sourced; quality is scored by an adversarial review panel (1–5; passes at ≥4 on the minimum dimension).

Level differentiation4.5Focus specificity5.0Concreteness4.5Factual accuracy4.5Real-world coverage4.5

5 sources

Level — P5 — Expert Professional

Expert in field; key problem solver and project leader, authority in multiple areas

Scope: Multiple systems or a technical domain
Autonomy: Sets direction within the domain
Complexity: Novel, high-ambiguity problems; establishes the approach
Impact: Org / multi-team outcomes
Decision rights: Authority over a technical domain
Leadership: Leads cross-team technical initiatives
Typical experience: 8–12 yrs

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