Sector · GCC-S02
Grid connection consultants for battery storage (BESS)
Battery storage needs both import and export capacity, so its connection agreement is more complex than for generation or demand alone. BESS made up a large share of the pre-reform GB connection queue.
- Typical size
- 1 MW to 500 MW+
- Typical voltage
- 11 kV to 132 kV; transmission for the largest sites
- Technical standard
- G99 (distribution), Grid Code (transmission)
- Timeline
- Dependent on Gate 2 outcome and strategic alignment
Connecting battery storage (bess) in the UK
Consultancies in this category support site selection, G99 applications, transmission applications for larger schemes, Gate 2 evidence and offer review.
Current regulatory issues
- Under connections reform, strategic alignment with national plans has been especially significant for storage because of its large share of the queue.
- Co-location with solar or wind can share a connection but needs careful export limitation design.
Track record counts only projects in this sector.
Best grid connection consultants for battery storage (bess)
Ranked by a published formulaMethodology
| Rank | Consultancy | Services | DNO coverage | Typical size | Score |
|---|---|---|---|---|---|
| 01 | Power On Connections Coventry · est. 2003 · 200+ staff Unverified Data centre · Industrial · Housing · BESS · Solar · Wind | Services | DNO areas14/15 | Size500 kW – 100 MW | Score35.9 |
| 02 | Aurora Power Consulting Bristol · est. 2007 · 6-15 staff Unverified BESS · Solar · Wind · Data centre · Industrial | Services | DNO areas00/15 | Size10–250 MW | Score35.4 |
| 03 | TNEI Manchester · est. 1999 · 51-200 staff Unverified Wind · Solar · BESS · Data centre · Industrial | Services | DNO areas00/15 | Size1–200 MW | Score34.5 |
| 04 | EnergyForce Withernsea · est. 2014 · 6-15 staff Unverified EV hubs · Industrial · Solar · BESS | Services | DNO areas14/15 | Size40–250 kW | Score31.9 |
| 05 | Power and Grid Engineering Stoke-on-Trent · est. 2022 · 1-5 staff Unverified Solar · Wind · BESS · Data centre · Industrial | Services | DNO areas14/15 | Size1–100 MW | Score31.6 |
| 06 | DNO Renewables Blyth · est. 2024 · 1-5 staff Unverified Solar · BESS · EV hubs · Industrial · Housing | Services | DNO areas15/15 | Size4 kW – 50 MW | Score30.1 |
| 07 | Green Cat Renewables Biggar · est. 2005 · 51-200 staff Unverified Wind · Solar · BESS | Services | DNO areas05/15 | Size500 kW – 69 MW | Score29.4 |
| 08 | SLR Consulting London · est. 1994 · 200+ staff Unverified Wind · Solar · BESS · Data centre · Industrial · EV hubs | Services | DNO areas01/15 | Size1–100 MW | Score25.9 |
| 09 | Engineering Power Solutions Stockton-on-Tees · est. 2012 · 6-15 staff Unverified BESS · Wind · Solar · Data centre · Industrial | Services | DNO areas01/15 | Size2–200 MW | Score24.2 |
| 10 | Blake Clough Consulting Slaithwaite · est. 2021 · 51-200 staff Unverified Wind · Solar · BESS · Data centre | Services | DNO areas00/15 | Size50–110 MW | Score23.9 |
| 11 | Natural Power Castle Douglas · est. 1995 · 200+ staff Unverified Wind · Solar · BESS | Services | DNO areas00/15 | Size5–100 MW | Score22.7 |
| 12 | RSK Utility Consulting Ipswich · est. 2018 · 6-15 staff Unverified Wind · BESS · Solar · EV hubs · Housing · Industrial · Data centre | Services | DNO areas02/15 | Size50 kW – 100 MW | Score22.6 |
| 13 | Decerna Cramlington · est. 2012 · 6-15 staff Unverified Wind · Solar · BESS | Services | DNO areas01/15 | Size3–250 MW | Score22.4 |
| 14 | Pure Green Consulting Newport · est. 2017 · 6-15 staff Unverified Solar · BESS · Wind | Services | DNO areas01/15 | Size25–600 MW | Score21.7 |
| 15 | Grid Connection Consulting Linlithgow · est. 2007 · 1-5 staff Unverified Wind · Solar · BESS | Services | DNO areas00/15 | Size150 kW – 2000 MW | Score18.6 |
| 16 | ADTEK Newcastle upon Tyne · est. 2012 · 1-5 staff Unverified Wind · Solar · BESS | Services | DNO areas00/15 | Size1–50 MW | Score17.9 |
| 17 | UK Power Engineers London · est. 2013 · 6-15 staff Unverified Solar · BESS · Industrial | Services | DNO areas00/15 | Size10–50 MW | Score17.4 |
| 18 | Star Delta Power Holmfirth · est. 2018 · 1-5 staff Unverified BESS · Industrial | Services | DNO areas02/15 | Size48.8–200 MW | Score17.1 |
| 19 | Locogen Edinburgh · est. 2009 · 16-50 staff Unverified Wind · Solar · BESS | Services | DNO areas00/15 | Size20–110 MW | Score15.8 |
| 20 | Roadnight Taylor Burford · est. 2013 · 16-50 staff Unverified Data centre · BESS · Solar · Wind · Industrial · Housing | Services | DNO areas00/15 | Size1–100 MW | Score15.6 |
| 21 | EA Technology Chester · est. 1990 · 51-200 staff Unverified BESS | Services | DNO areas00/15 | Size100 kW – 50 MW | Score15.5 |
| 22 | PSE2 Consulting Bristol · est. 2016 · 6-15 staff Unverified EV hubs · Solar · Wind · BESS · Industrial | Services | DNO areas01/15 | Size1–50 MW | Score15.4 |
| 23 | Artios Energy Edinburgh · est. 2021 · 1-5 staff Unverified Wind · Solar · BESS | Services | DNO areas00/15 | Size1–100 MW | Score15.2 |
| 24 | HZ Power London · est. 2021 · 1-5 staff Unverified Solar · BESS · Data centre | Services | DNO areas00/15 | Size94 kW – 960 MW | Score13.4 |
| 25 | Utility Connections Warrington · est. 2019 · 16-50 staff Unverified Data centre · Industrial · Solar · BESS | Services | DNO areas00/15 | Size100 kW – 20 MW | Score12.6 |
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Battery storage (BESS): common questions
Q01Does battery storage need a G99 application?
Yes. Battery storage connected to a GB distribution network is treated as generation for G99 purposes, as it can export. Transmission-connected batteries must meet Grid Code requirements instead.
Q02What changed for battery projects under Gate 2?
Projects now need to meet readiness criteria, such as secured land rights, and pass strategic alignment checks to receive a confirmed queue position. Projects that do not meet them do not keep a firm place in the queue.
Q03Can a battery share a grid connection with a solar farm?
Yes, co-location is common. The combined site usually needs an export limitation scheme so total export stays within the agreed capacity.