Power generation · energy storage · island grids
Independent, employer-side consultancy for BESS, grid connections, control systems and island power. From feasibility to commissioning to operation. Led by Jon Stokes with a team of consultants and engineers, based in Alderney, Guernsey (Channel Islands) and working across the UK and worldwide.
Services
A consultancy that has built, wired, programmed and tested the plant it advises on, with a team of engineers available when the job needs more than one pair of hands.
Independent review for investors, lenders and owners across the project lifecycle, from grid application to operating asset.
Commissioning management and witness testing at DNO and transmission connected levels, including NESO Independent Test Engineer services.
Design, integration and optimisation of the control layer between the plant and the market, from engine controller to trading platform.
When the off-the-shelf product does not fit the plant, we build it: control logic, SCADA, data collection and the tools that sit around them.
Witness-ready testing of generation and storage connections at LV and HV, with the paperwork the DNO expects.
Inside the client's project team, managing EPC and OEM relationships and protecting the client's interests through delivery.
Hybrid generation, renewables integration and grid stability for islands and off-grid sites, with engine control across gas, diesel and hybrid plant.
Connecting the asset to the optimiser, aggregator or trader that will dispatch it, and proving the whole chain works before go-live.
Getting operating assets into a state that can be run, maintained and traded day to day.






We have taken transmission-connected batteries through EON, ION and FON with NESO, and recovered a stalled site to one trading daily.
Track record
500MWEmployer-side technical consultant: HIL test planning, EPC interface, grid compliance, metering architecture and frequency control analysis. Southern Scotland.
200MWCommissioning and integration lead: trading platform, SCADA, metering, EON to FON, Grid Code and compliance testing. North East Scotland.
HVDCControl scheme development with the network operator: signal paths, operating modes, SCADA and cyber-security reviews, operational metering. Technical consultant and commissioning support. Northern Isles.
Client and site names are withheld. Locations are given to the nearest region and capacities are indicative.
Sectors
Engines today, with solar, wind, tidal and storage on the way, all on one small grid with no interconnector to lean on. Energi was built in Alderney, where we rebuilt the island's power station and grid with the AEL team and still run its engineering.
About
Energi is led by Jon Stokes, a power generation and energy storage engineer, project manager and consultant with over twenty years across BESS, microgrid, island power, engine control, SCADA and OT systems.
Jon has delivered complex, multi-disciplinary projects at DNO and transmission connected levels, from feasibility and financial modelling through to commissioning and O&M. His background is hands-on across mechanical, electrical and control systems, including PPC, DCS, protection and control, and engine control across gas, diesel and hybrid plant. He is an HV Senior Authorised Person at 11 kV and 33 kV and a NESO Independent Test Engineer.
Alongside Energi he is Head of Technical, Engineering and Commissioning at Alderney Electricity Limited, the island's utility, where he is technical authority for generation, network and control assets.
Equipment and platforms worked with include ComAp, Siemens, ABB, SMA, Wärtsilä, BYD, Sungrow, Tesla, Bachmann, Hyosung, Power Electronics, KrakenFlex, Foxboro, Perkins, Caterpillar, GE and Cummins.
Behind Jon is a team of consultants, engineers and technicians with long experience in the power industry, available for engineering, commissioning, testing and site management on a project or contract basis.
Contact
Available for employer-side consultancy, commissioning and test engineering, and due diligence assignments in the UK and internationally, with a team of trusted engineers and consultants behind us when the job needs more hands.
Old Salvation Army, High Street
Alderney, Channel Islands GY9 3TG