OBJECTNOW KNOWLEDGE BASE

Solar & BESS

Solar glint and glare, battery storage and associated planning issues.

What is a Battery Energy Storage System (BESS) and what planning issues can arise?

A BESS stores electrical energy for later export or grid services. Planning issues can include site design, landscape and visual effects, noise, access, drainage, ecology, fire-safety evidence, emergency access, lighting, grid connection and cumulative effects.

The planning authority is not necessarily the regulator for every technical safety matter, but land-use consequences and the adequacy of information relevant to planning can still be material.

Sources and further information
GOV.UK: Environmental Impact AssessmentScottish Government: National Planning Framework 4Welsh Government: Planning Policy WalesDepartment for Infrastructure NI: Strategic Planning Policy Statement Edition 2Last checked: 25 September 2026

How should I review a glint and glare assessment for solar development?

Identify the receptors and routes assessed.

Glint and glare work commonly considers nearby dwellings, roads, railways and aviation receptors where relevant. Check whether the study area and receptor selection are explained.

Check the panel assumptions.

Orientation, tilt, height, tracking behaviour and panel technology affect reflections. Ensure the model corresponds to the proposed design or a justified worst-case scenario.

Distinguish geometric possibility from assessed impact.

A model may identify times when reflection is geometrically possible and then consider duration, angle, screening and receptor sensitivity. Read beyond the initial result table.

Check screening carefully.

Existing vegetation may not provide year-round screening, while proposed planting takes time to establish. If mitigation relies on screening, identify its location, height, timing and securing mechanism.

For aviation, identify the relevant consultation evidence.

Do not assume every predicted reflection creates an aviation safety problem. Check the methodology, receptor type and responses from the relevant airport, aerodrome or aviation body where applicable.

Sources and further information

Scottish Government - Information to be included in an EIA Report

GOV.UK - Environmental Impact Assessment

Welsh Government / PEDW - Environmental Impact Assessment guidance

Last checked: 26 September 2026

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