Specialist electrical and building services design for RIBA Stages 0-3.
From feasibility through detailed design—ready for tender.
We specialise in early-stage electrical and building services design—from strategic advice through to detailed design ready for tender. Working collaboratively with architects and design teams to deliver technically sound, buildable solutions.
Comprehensive electrical services design combining power distribution with innovative architectural lighting. From initial feasibility through detailed design, we deliver RIBA Stage 0-3 packages using industry-standard tools (AutoCAD, DIALux, Amtech).
Strategic design of solar PV installations and electric vehicle charging infrastructure. Feasibility studies, capacity assessments, and detailed design to RIBA Stage 3, ensuring projects meet sustainability targets and future energy demands.
Extra low voltage systems design including security, access control, CCTV, fire alarms, and audio-visual integration. Coordinated design ensuring seamless integration with electrical services and architectural intent.
Assessment of existing switchgear capacity and design of new additions to support 4MW+ broadcast facility. Ongoing capacity planning and phased installations throughout 2026 to meet growing production demands
Complete lighting design using DIALux software for new primary school. Full electrical design, calculations, documentation and risk assessments following DfE guidance. Optimised for educational spaces with energy-efficient LED solutions
Full electrical engineering management including emergency lighting, fire alarm systems and CCTV for iconic warehouse redevelopment. Part of major Bristol City Docks regeneration scheme transforming historic industrial buildings
Three-month intensive project designing solar photovoltaic installations ranging from 25kW residential systems to 5MW commercial arrays. Complete CAD designs, electrical calculations, grid connection studies and ROI analysis for diverse client base
Stephens Engineering Group is a Bristol-based electrical consultancy established in 2024. We specialise in RIBA Stages 0-3 design services—from strategic feasibility through detailed design packages ready for tender.
Founded by Aaron Stephens, we work directly with architects, developers, and project teams to deliver technically robust, buildable electrical solutions. Every project receives senior-level attention—no work is delegated to junior engineers.
Our focus is early-stage design where strategic decisions are made. We combine technical expertise with collaborative working, using industry-standard tools (AutoCAD, DIALux, Amtech) to produce clear, coordinated design packages.
We deliver comprehensive electrical design services through:
Whether you're at initial concept stage or ready to move to detailed design, we'd welcome the opportunity to discuss how we can support your project.