National Energy System Operator Limited is procuring a Technical Consultancy Framework to support specialist analysis and advice across the energy system. The current notice gives an estimated value of £60.5 million excluding VAT, or £72.6 million including VAT, with a potential term of up to eight years.
This opportunity is aimed at consultancies and technical specialists with evidence in energy engineering, modelling, assurance, economics, regulation and related system-operation challenges. For an initial bid assessment, contact Thornton & Lowe.
Technical areas covered
The published scope identifies five broad areas:
- Engineering and technical analysis.
- Modelling and simulation.
- Strategic technical consultancy.
- Technical assurance.
- Market design, economics and regulation.
The final lots and requirements should be reviewed carefully. Some bidders may be able to cover several areas through one multidisciplinary team, while specialist boutiques may be strongest in a single field. A wide service list is not automatically an advantage if the evidence is shallow.
Who is likely to be a credible bidder?
Potential suppliers include power-system engineering consultancies, energy economists, modelling specialists, market-design advisers, technical assurance practices, academic or research-led teams and larger multidisciplinary firms with a dedicated energy-system capability.
Relevant experience may come from network operators, generators, regulators, government, infrastructure investors or major energy users. Bidders should explain why the context is comparable to NESO’s role and how the work influenced real decisions, rather than relying on technical terminology alone.
What to demonstrate in the bid
- Expert resource: named specialists, professional standing and access to scarce skills.
- Analytical rigour: methods, assumptions, peer review, validation and uncertainty management.
- Independence: conflict controls and objective advice across a complex market.
- Knowledge transfer: outputs that NESO teams can understand, challenge and use.
- Data and security: controlled handling of sensitive models, datasets and findings.
- Responsive delivery: the ability to mobilise quickly for short studies as well as longer work packages.
Use the published weighting and scoring descriptors to decide where the strongest evidence belongs. Our guide to tender scoring methodology explains how to write towards the marks available.
Review the official opportunity
Check the official Find a Tender notice for the confirmed deadline, lot conditions, framework operation and documents. Do not assume that every technical field can be combined within one response or that the maximum framework term applies to every call-off.
Before submission, agree your lot strategy, identify the experts who will be named, and build evidence around quantified outcomes, quality controls and clear communication of complex analysis.
Thornton & Lowe can help technical consultancies organise complex evidence into compliant, evaluator-focused responses. Speak to our bid specialists.
