Battery storage planning permission on a field site

Battery storage on a field site in England is decided by the local planning authority, whatever its capacity. The Infrastructure Planning (Electricity Storage Facilities) Order 2020 removed electricity storage other than pumped hydro from the national infrastructure consenting regime, so a 49 MW scheme and a 500 MW scheme both go in as a full application to the council. That is the starting point for battery storage planning permission and it shapes everything about how the case is presented.

It also means the officer determining a scheme worth tens of millions may never have seen one before. Write the application accordingly.

Screening, thresholds and the application route

Most field-scale schemes need a screening opinion under the Town and Country Planning (Environmental Impact Assessment) Regulations 2017. Energy installations fall within Schedule 2, and the area thresholds catch sites well below the size of a typical grid-scale battery compound.

Request a screening opinion early. A negative screening opinion in hand is worth several weeks at determination, and it heads off the objection that the scheme should have been assessed as EIA development. Where an Environmental Statement is required, it must be prepared by competent experts as the regulations require, and an AI-drafted document has no place at the centre of that work.

Expect a temporary permission tied to an operational life, commonly 40 years, with restoration secured by condition.

Site selection: grid, access and land quality

Three constraints decide the site long before planning does.

Grid capacity comes first, since the connection point and the offer date fix the location within a narrow radius. Access comes second, because containerised units and transformers arrive on long vehicles that need swept path analysis at every pinch point between the strategic road network and the gate.

Land quality comes third and it is the one most often underestimated. Where a site includes agricultural land, national policy expects poorer quality land to be preferred, so establish whether the site is best and most versatile before committing. Provisional mapping does not split grade 3 into 3a and 3b, and only a site-specific survey does, which is why an Agricultural Land Classification survey by a soil specialist is worth commissioning at option stage rather than after the objections arrive.

Fire safety and the fire and rescue consultation

Lithium-ion storage brings thermal runaway risk, and fire and rescue services now expect to be consulted properly rather than notified. The National Fire Chiefs Council has published guidance for fire services on grid-scale battery sites, and your design should answer the questions it raises.

Cover these in the submission.

1. Separation distances between containers and to the site boundary, with the basis for the figures used.
2. Vehicle access for appliances, including turning and standing areas, and a second point of access where practical.
3. Water supply for firefighting, its source, flow rate and how it is secured.
4. Containment of firewater run-off so it cannot reach a watercourse or an aquifer.
5. Detection, suppression and gas venting arrangements for the battery enclosures.
6. An emergency response plan agreed with the fire and rescue service, secured by condition.

Firewater containment is where schemes are most often caught out. A bunded compound with a penstock valve costs little when designed in early and a great deal as a retrofit.

Noise from inverters, transformers and cooling

Field sites sit in rural acoustic environments where night-time background sound levels are very low, which makes the arithmetic in BS 4142:2014+A1:2019 unforgiving. Transformer hum attracts a tonal correction, and cooling fans cycle, which can attract an intermittency correction as well.

Design the acoustic case rather than assessing it afterwards. Increase separation to the nearest dwelling, orientate units so the noisiest faces point away, specify low-noise transformers and enclosures, and consider acoustic barriers on the affected side. Then put the mitigated rating level in the Noise Impact Assessment with a post-installation verification survey offered as a condition.

Councils increasingly condition a fixed noise limit at named receptors. Make sure the limit you accept is one the equipment can actually meet in still, cold conditions.

Landscape, visual effects and screening

Containers stand around two and a half to three metres tall, with substation structures and lightning protection above that. The visual issue is rarely height, it is the industrial character of a rectilinear compound in an agricultural field, with palisade fencing and CCTV columns.

A Landscape and Visual Impact Assessment prepared to GLVIA3 should test viewpoints agreed with the council, cover winter conditions rather than summer alone, and be honest about the years it takes new planting to perform. Native hedgerow reinforcement with hedgerow trees, set outside the security fence, does more for the case than a token band of shrubs inside it.

Cumulative effects matter where other energy schemes are consented nearby. Officers will ask, so answer it before they do. List the consented and pending schemes within a sensible radius, show them on a plan, and test at least one viewpoint from which more than one would be seen together.

Biodiversity net gain and decommissioning

Mandatory biodiversity net gain under the Environment Act 2021 applies, with the statutory metric completed by a competent person and a biodiversity gain plan approved by the council. Battery sites often deliver gain well above the minimum, because the land between and around the compound can be taken out of arable rotation and managed as species-rich grassland for the 30-year period. Say how it will be managed and by whom. A Biodiversity Net Gain Assessment is one of the report types where a competent person is legally expected.

Decommissioning conditions normally require removal of all above-ground structures, removal of hard standing and cabling to an agreed depth, and restoration to agricultural use, backed by a scheme submitted before the end of the permitted life. Some councils ask for a bond or a section 106 obligation. Resist wording that ties restoration to a date rather than to the end of operation, since projects are frequently repowered.

The refusal reasons that recur

Loss of best and most versatile agricultural land without adequate justification. Landscape and visual harm in a sensitive setting. Noise at nearby dwellings, particularly at night. Inadequate fire safety information or an unresolved fire and rescue objection. Highway access unsuitable for abnormal loads. Harm to the setting of a listed building or a scheduled monument. And cumulative effects where several schemes cluster around one grid connection.

An illustrative example. A 30 MW scheme on 2.5 ha of grade 3b land, 250 m from the nearest dwelling, would typically need a screening opinion, a noise assessment, an LVIA, ecology and biodiversity net gain work, a fire safety and emergency response strategy, a drainage and firewater containment design, and a construction traffic plan. Those figures are illustrative only.

You can enter your postcode on PlanScope to see which of the 66 report types a field site is likely to need. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval, and for specialist technical reports qualified professional input may be required.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it.