National Grid Aptitude Test & Graduate Scheme Guide 2026
The complete guide to National Grid's recruitment process — online reasoning tests, video interview, virtual assessment centre, and expert preparation for engineering, commercial and digital graduate schemes.
Overview & National Grid's Role
National Grid owns and operates critical electricity transmission infrastructure in England and Wales and has a growing presence in electricity and gas markets in the north-eastern United States. As the energy system transitions toward renewables and electrification, National Grid runs large annual graduate, apprenticeship, and placement programmes to bring in engineering, commercial, digital, and finance talent to support that transition.
National Grid's recruitment process is designed to assess both technical aptitude and the collaborative, safety-conscious mindset needed to operate national infrastructure. Most schemes follow a similar structure: online application, online reasoning tests, a video interview, and a virtual (sometimes in-person) assessment centre.
Candidates applying to engineering-focused schemes should expect additional emphasis on numerical and inductive reasoning, plus interview questions probing genuine interest in energy infrastructure and the net-zero transition — not just generic motivation for "a graduate scheme."
Graduate Programmes & Streams
National Grid recruits graduates across several broad streams, each with a different balance of technical and commercial assessment.
⚙️ Engineering
Electrical, mechanical, civil and asset engineering roles supporting transmission infrastructure. Heaviest numerical and inductive reasoning emphasis.
💼 Commercial & Finance
Regulation, strategy, finance and procurement roles. Strong numerical reasoning with more emphasis on commercial judgement in interviews.
💻 Digital & Technology
IT, data and digital transformation roles supporting grid modernisation. Verbal and inductive reasoning alongside basic technical screening.
🌱 Sustainability & Energy Transition
Roles supporting decarbonisation strategy and renewables integration. Strong emphasis on genuine sector knowledge in interviews.
🛠️ Apprenticeships
Technical apprenticeships combining on-the-job training with qualifications. Lighter aptitude testing, stronger practical and safety focus.
📊 Project & Programme Management
Delivery roles across major infrastructure projects. Balanced numerical, verbal and situational judgement assessment.
The 4 Recruitment Stages
Online Application
CV or online form, academic details, and short motivational questions about the specific stream you are applying for.
- Be specific about why energy infrastructure and why National Grid — generic answers are easy to spot
- Relevant coursework, placements or extracurricular projects in engineering or sustainability strengthen engineering applications
Online Reasoning Tests
Numerical and verbal reasoning tests, often with an inductive/logical reasoning component for engineering and technology streams, delivered through an online testing platform.
- Untimed practice first, then move to full timed conditions
- Engineering streams should expect a stronger numerical and inductive weighting
Video Interview
A recorded or live video interview covering motivation and two to three competency-based questions in STAR format.
- Expect a question on safety-consciousness or working in a regulated environment
- Prepare a clear answer on why the energy transition specifically interests you
Virtual Assessment Centre
A half-day virtual event (sometimes in-person for engineering streams) combining a group exercise, a case or written exercise, and a final interview.
- Group exercises are often built around infrastructure investment or project prioritisation scenarios
- Final interviews probe both technical understanding and cultural fit
Online Reasoning Tests
National Grid's online testing stage focuses on the reasoning skills most relevant to engineering and infrastructure work — accurate interpretation of numerical data, careful reading comprehension, and, for technical streams, logical pattern recognition.
| Test | Format | Typical Time | Stream Priority |
|---|---|---|---|
| Numerical Reasoning | Data tables, charts — MCQ | ~20–25 min | 🔴 High — all streams |
| Verbal Reasoning | True / False / Cannot Say | ~20 min | 🟡 Medium — all streams |
| Inductive / Logical Reasoning | Abstract sequences — MCQ | ~15–20 min | 🔴 High — engineering & digital |
| Situational Judgement | Scenario-based MCQ | ~15–20 min | 🟢 Medium — commercial & project roles |
Our guides to numerical reasoning, inductive reasoning, and verbal reasoning cover each format in depth with worked examples.
Video Interview
The video interview stage typically asks four to six questions covering motivation ("Why National Grid?", "Why this stream?"), plus behavioural questions using the STAR technique: teamwork, problem-solving, and safety-consciousness or attention to detail.
National Grid interviewers can quickly tell the difference between candidates with a genuine interest in infrastructure and net-zero, and those applying generically to any graduate scheme. Read one or two recent National Grid announcements about grid investment or renewables connection projects before your interview.
See our full video interview guide for setup and delivery tips.
Virtual Assessment Centre
The final stage is typically a half-day virtual assessment centre (some engineering and technical apprenticeship streams run an in-person day at a National Grid site). It usually includes a group exercise built around an infrastructure or investment-prioritisation scenario, a short written or case exercise, and a final one-to-one or panel interview.
Assessors are scoring how you collaborate under time pressure as much as the quality of your final recommendation. For a full breakdown of formats and scoring criteria, see our guides to group exercises and the assessment centre more broadly.
What National Grid Looks For
As a regulated critical-infrastructure operator, National Grid consistently emphasises a handful of capabilities across its graduate schemes:
- Safety-consciousness: Demonstrated care and attention to detail, particularly for engineering and site-facing roles.
- Collaboration: Working effectively across technical, commercial and regulatory teams.
- Genuine sector interest: A clear, specific understanding of why the energy transition and grid infrastructure matter, beyond generic graduate-scheme motivation.
- Analytical rigour: Comfort interpreting technical or commercial data and drawing sound conclusions under time pressure.
- Long-term thinking: Infrastructure decisions play out over decades — candidates who can reason about long time horizons stand out.
4-Week Preparation Plan
- Week 1 — Numerical & verbal reasoning: Use our free practice tests daily, focusing on data-table interpretation speed. Review every incorrect answer.
- Week 2 — Inductive reasoning (engineering & digital): Practise abstract pattern questions specifically if applying to an engineering or technology stream, where this is most heavily weighted.
- Week 2 — Sector research: Read National Grid's latest annual report highlights and one or two recent announcements about grid investment, interconnectors, or renewables connections. Be ready to discuss one theme in detail.
- Week 3 — Video interview prep: Prepare three STAR examples covering teamwork, problem-solving, and safety or attention to detail. Practise recording yourself.
- Week 4 — Assessment centre rehearsal: Run a mock group exercise using an infrastructure-investment scenario, and practise structuring a short written recommendation under time pressure.
Frequently Asked Questions
Ready to Prepare for National Grid?
Start with our free numerical and inductive reasoning practice tests — the two areas National Grid weighs most heavily for engineering and technical streams.