Build commercial PV projects on stronger technical foundations

Solar PV design and engineering support for commercial and industrial projects, from proposal concepts to finance, PPA and preliminary engineering.

 ⛨  PV design support for installers, EPCs, developers, and commercial energy teams.

THE PROBLEM WE SOLVE

A commercial PV design should reflect the building, the load, the grid route and the installation reality. Nortcel helps project teams reduce uncertainty before pricing, approval, finance or delivery decisions are made.

Commercial solar succeeds when design reflects the site, load and delivery reality

Weak inputs create weak proposals

If drawings, roof constraints, load data or assumptions are incomplete, proposals can become difficult to defend later.

Grid and site risks can change the project

Export limits, DNO requirements, access, structure and roof obstructions can affect capacity, cost, programme and design direction.

Commercial decisions need technical evidence

Finance, PPA and client approval discussions are stronger when design assumptions are clear, visible and technically justified.

WHAT WE DESIGN

Nortcel supports commercial and industrial PV design across rooftop, carport and ground mount environments, helping each layout reflect the site, electrical context, energy demand and project route.

Commercial & industrial PV across roof, carport & ground mount systems

  • Roof mounted C&I systems

    Layouts developed around roof zones, skylights, walkways, exclusions, and installation practicality.

  • Pitched roof systems

    Array layouts developed around pitch, orientation, roof geometry, edge zones, fixing approach, access and equipment constraints.

  • Flat roof systems

    East-west or south-facing layouts with spacing, shading, roof zone, ballast and mounting coordination considered where relevant.

  • Ground mount systems

    Concept layouts and assumptions based on boundaries, setbacks, topography and grid context.

  • Solar carports

    PV canopy layouts coordinated with parking geometry, access, structure, EV charging opportunities and site electrical strategy.

DESIGN SUPPORT BY PROJECT STAGE

Nortcel structures design support around the decision being made, from early proposal clarity to finance, PPA, DNO and permitting preparation.

Choose the right design stage for the decision ahead

  • ESSENTIAL CONCEPT

    Proposal Level

    Early design clarity for client proposals and budget decisions.

    Outputs

    • Site review

    • Indicative layout

    • Capacity estimate

    • Generation view

    • Risk notes

  • ADVANCED CONCEPT

    Finance and PPA

    Stronger demand, export and value assumptions for commercial evaluation.

    Outputs

    • Consumption-led sizing

    • Half-hourly review

    • PPA scenario comparison

    • Refined layout

    • Export assumptions

  • PRELIMINARY ENGINEERING

    DNO and Permitting

    Preliminary engineering support before grid, permitting, pricing or delivery.

    Outputs

    • SLD

    • Stringing approach

    • Inverter strategy

    • Mounting coordination

    • DNO inputs

DESIGN SERVICES

Our commercial solar design service can include

Nortcel can support a single design task or a wider design package, depending on the project stage and the information available.

Site and feasibility review

Review drawings, surveys, maps, roof or land areas, constraints, access, exclusions and available commercial information.

3D design and shading analysis

Develop 3D models, roof layouts and shading studies to improve production assumptions and stakeholder confidence.

SLD and Electrical documentation

Prepare SLDs, string layouts, inverter location notes, cable routing assumptions and electrical information for project review.

Mounting system coordination

Support mounting strategy, roof zones, ballast considerations, clamp zones and supplier information where required by project scope.

Consumption-led sizing

We use bills, half-hourly data and operating information to align PV capacity with site demand, export & commercial objectives.

System design and modelling

Define layout, module quantity, inverter approach, stringing logic, generation assumptions, losses and practical design limitations.

Battery and EV integration

Review battery, EV charging and load management opportunities where they strengthen self consumption, resilience or site value.

Grid and DNO application support

Support G98, G99, G100 and DNO related information where the project scope requires grid connection inputs.

HOW IT WORKS

A structured route from project information to design output

  • Project Brief

    Share site details, drawings, roof information, half-hourly data, bills, operational notes and known constraints.

  • Technical Review

    We review demand profile, roof environment, electrical context, grid information and available project data.

  • Scope Definition

    We confirm assumptions, deliverables, turnaround time and the most suitable design route.

  • Design & Modelling

    Our team develops layouts, yield assumptions, stringing, inverter strategy and design documentation.

  • Delivery & Support

    Receive structured outputs with support for revisions, queries and stakeholder review.

Have a commercial PV project ready for review?

Send us the project details, and we will help identify the right design stage and the next technical step.

STANDARDS & COMPLIANCES

Our design process considers the relevant electrical, grid, installation, building and construction safety requirements for the scope of each project.

Designed with UK requirements in mind

  • Small scale PV installation standards and documentation expectations considered where applicable

  • UK wiring regulation requirements considered as part of the electrical design approach.

  • Generation connection and export limitation requirements considered according to project scale and network context.

  • Local network conditions, export limits and project-specific connection requirements considered during design.

  • Structural, fire, electrical and material considerations reviewed where relevant.

  • Design risk, access, construction safety and maintenance considerations included where relevant.

  • Applicable product, electrical and performance standards considered for project-specific requirements.

  • Equipment-specific installation, design and warranty requirements reviewed during specification.

THE NORTCEL ADVANTAGE

Why commercial PV teams work with Nortcel

Nortcel gives project teams access to specialist solar design and engineering support without building every capability in house.

Specialist C&I PV focus

Work with designers familiar with commercial roof, carport, ground mount, grid, electrical and stakeholder requirements.

Lower design overhead

Avoid recruitment, salaries, training, software licences and hardware costs for fluctuating design workloads.

Flexible capacity

Scale design support up or down as proposal, tender, survey or delivery demand changes.

Faster project movement

Dedicated external capacity helps keep projects progressing when internal teams are already committed.

Structured quality control

Design outputs are reviewed for accuracy, assumptions, practical constraints and documentation quality.

Commercially useful outputs

Documentation supports sales, finance, DNO, permitting, PPA, and stakeholder review.

CLIENT PROOF

Trusted design support for commercial PV teams

3100+

designs completed

690+

MW designed

18+ 

long term partnerships

  • "Nortcel brought a wealth of knowledge and experience to the table, providing insightful and innovative design solutions that exceeded our expectations."

    - Darren Pelling, Managing Director, ClimateShield Solar

  • "Their work is always to a very high standard. I wholeheartedly recommend Attila and his team for any solar project, big or small."

    - Leigh Goodman, Founder and Chairman, Dynamis

  • "Nortcel's input is and will remain an essential part of any works I am involved in and should be part of yours."

    - David DuBarry-Hennessy, Business Development Manager

Frequently asked questions

  • We design solar PV systems for warehouses, factories, offices, retail sites, industrial units and complex multi building locations.

    This service is suited to EPCs, installers, developers, consultants and asset owners who need accurate, practical and commercially useful designs. We can support early proposal work, sales stage layouts, PPA level designs, investor level design packs and more detailed design development as the project progresses.

    Whether you need support on 1 project or ongoing design capacity across a wider pipeline, Nortcel can work as part of your team and adapt to your workflow.

  • Yes. We regularly support EPCs, installers and developers who need reliable design capacity without expanding their internal team.

    We can support your existing designers, cover overflow work, replace an internal design function, or become your external design partner as your workload grows. Over time, we learn your standards, preferred formats, commercial priorities and approval process, which makes collaboration faster and smoother.

    This is especially valuable for companies managing multiple opportunities where speed, accuracy and consistency all matter.

  • Yes. This is a key part of our commercial and industrial design support.

    We can prepare design outputs suitable for proposals, client presentations, PPA discussions, early investment review and internal decision making. These designs help communicate system potential, expected performance, usable roof or land area, key assumptions and technical direction.

    At this stage, the goal is to give stakeholders enough confidence to move the project forward while keeping assumptions realistic and clearly stated.

  • Turnaround depends on site complexity, input quality and the level of detail required.

    A straightforward proposal level design can often be completed quickly when the required information is available. More complex sites, multiple buildings, detailed yield modelling, PPA support or investor level outputs may require more time.

    We manage work through a structured project system where tasks, progress, priorities and missing information can be tracked clearly. This keeps communication efficient and helps projects move forward without unnecessary delays.

  • We treat design as an engineering process, not just a visual layout exercise.

    Each project is reviewed for practical constraints, buildability, performance assumptions, equipment strategy and the level of detail required for its purpose. A proposal level design does not need the same detail as a construction ready package, but it still needs to be accurate enough to support good decisions.

    Our aim is to reduce risk, avoid misleading assumptions and provide outputs that help clients sell, approve, finance or deliver projects with greater confidence.

  • The ideal information includes the site address, roof plans or drawings, electricity consumption data, available site photos, known constraints, preferred equipment, required system objective and any client specific requirements.

    For proposal, PPA or investor level work, it is also useful to know the commercial purpose of the design. For example, whether the output is being used for a client proposal, internal approval, funding review, PPA modelling or early feasibility.

    If the information is incomplete, we can still help you define what is missing and guide the next steps.

  • Pricing is based on project size, complexity, urgency, level of detail and required outputs.

    A simple proposal level layout will be priced differently from a detailed investor level pack or design requiring multiple scenarios, revisions and performance analysis. We price around the technical care, responsiveness and level of support required for each project.

    For long term partners, we can create a more predictable pricing structure that supports repeat work, fast turnaround and consistent quality.

  • Yes. Revisions and optimisation are a normal part of the design process.

    We can revise layouts, adjust system size, compare design options, refine yield assumptions, review equipment choices and respond to stakeholder feedback. This is especially useful during proposal, PPA and investor review stages, where assumptions often develop as the project becomes clearer.

    Our role is not only to produce a design, but to help the project reach a stronger technical and commercial position.

Ready to Move

Your Project Forward?

Share your project details and speak directly with a solar design engineer. We will review your requirements, clarify the scope and guide you towards the right design solution for your site.