Senior Estimator – Renewables Projects

Keltbray; Slough; On-site; GBP 90,000 - 130,000; Full time

Job summary

Keltbray is seeking a Senior Estimator – Renewables to lead estimating and cost planning across grid connections, BESS BoP and wind eBoP projects within the Energy & Digital Infrastructure sector. You will shape cost intelligence from early development to contract award and support pre-construction strategy.

The role requires senior-level cost leadership, market awareness and the ability to develop robust, auditable estimates that reflect delivery pathways and risk, helping Keltbray win and

Qualifications

• Significant experience in estimating renewable energy or major infrastructure projects.
• Strong technical understanding of grid connections, BESS BoP and/or wind eBoP works.
• Proven ability to lead complex estimates across multiple workstreams and stakeholders.
• High level of commercial acumen and numerical capability.
• Ability to interpret contracts, technical scopes and employer’s requirements.
• Strong communication skills with the ability to present and defend estimates at senior level.
• Highly organised, detail-focused and comfortable operating in fast-moving pre-construction environments.

Responsibilities

• Lead the preparation of estimates, cost plans and pricing submissions for renewable energy infrastructure projects, including grid connections (HV/EHV), cross-country cable routing, BESS BoP and wind eBoP scopes.
• Develop robust cost models across varying stages of design maturity, from early feasibility and optioneering through to fully detailed tender returns.
• Produce estimates covering civils, cable installation, substations, compounds, access roads, drainage, earthing and associated enabling works as well as the Electrical/MEICA delivery.
• Ensure all estimates are aligned with construction methodology, programme assumptions and delivery strategy.
• Provide auditable breakdowns of assumptions, inclusions, exclusions, risk allowances and contingencies.
• Support target cost, open-book and negotiated pricing arrangements where required.
• Engage proactively with the supply chain to test pricing assumptions, capacity, productivity and risk allocation.
• Develop and maintain renewable-specific cost benchmarks, rates and productivity data.
• Monitor market trends affecting renewables delivery, including grid congestion, cable pricing volatility, plant availability and labour constraints.
• Advise pre-construction and commercial teams on procurement strategies and packaging approaches to optimise cost and risk.
• Build and maintain strong relationships with key specialist subcontractors and suppliers.
• Identify, quantify and articulate cost risk and opportunity across all estimating activities.
• Support value engineering, optioneering and scope optimisation to balance cost, programme and technical risk.
• Collaborate with design and planning teams to assess alternative methodologies, construction sequencing and access strategies.
• Ensure appropriate risk allowances are applied in line with design maturity and delivery certainty.
• Support sensitivity analysis and scenario modelling for investment and executive decision-making.
• Work closely with commercial managers to ensure alignment between pricing, contract strategy and margin objectives.
• Support bid teams with commercial narratives, clarifications and pricing strategy.
• Provide cost input into design development, FEED studies and constructability reviews.
• Support smooth transition from pre-construction to delivery by clearly communicating cost assumptions and risk positions.
• Assist with assessment of variations, compensation events and change during early delivery where required.

Job description

Keltbray is seeking a Senior Estimator – Renewables to lead estimating and cost planning across grid connections, BESS BoP and wind eBoP projects within the Energy & Digital Infrastructure sector. You will shape cost intelligence from early development to contract award and support pre-construction strategy.

The role requires senior-level cost leadership, market awareness and the ability to develop robust, auditable estimates that reflect delivery pathways and risk, helping Keltbray win and