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For developers / London & the South East

Renewable Energy Strategies for Planning Applications in London

If your planning permission asks for an energy strategy, an energy statement or a sustainable technology strategy, we can write it. We design and install solar every week, so the layout we put in front of the council is one we know can be built.

Completed solar panel array beside a rooflight on a flat roof at sunset, Colchester
Why REX

An Energy Strategy Is Only as Good as Its Solar Design.

Many strategies are written by consultants whose work is energy modelling, and that is skilled work. Solar layout is a different skill. A panel count taken from a roof area does not always survive a site visit, and that gap shows up later, in the cost, in the generation figures and in what the council is told.

We install the systems we design. That is why we write the strategy around a roof that works.

01

Space that exists

Panels laid out around rooflights, heat pumps, plant and access zones.

02

Mounting that suits the roof

Ballast, fixed or in-roof, chosen for the roof build-up and its pitch.

03

Generation figures you can defend

Orientation, shading and tilt, in numbers your planning team can put forward.

04

Maintenance access

Panels that can be reached safely, so they stay on the roof.

Rows of solar panels on a flat roof at a completed REX installation in ColchesterSolar panels on ballasted mounts on a flat roof, ColchesterSolar array at the edge of a flat roof beside a rooflight, Colchester
Roof plans

What We Look at When We Read a Roof Plan.

On a recent Finchley development the plans showed a flat roof. On site it was very slightly pitched, which made a standard ballasted system a poor choice. We changed the fixing method and the roof stayed watertight. That kind of detail belongs in the strategy before the roof is built, while there is still time to change things.

We work with your architect and M&E team to get the solar layout, generation estimates and mounting details right at design stage.

Solar panels on a finished pitched roof at a REX residential development in Enfield

What the Strategy Covers

Be leanReducing energy demand, with SAP or SBEM baseline modelling.
Be cleanEfficient heating and cooling, and heat networks where they exist.
Be greenOn-site solar PV and battery storage, sized to the real roof.
Be seenMonitoring energy performance after completion.
From condition to submission

How It Works.

01

Send Us the Details

The roof plans and the planning condition or decision notice.

02

Roof Review

We tell you what is realistic for the roof, and what the submission needs.

03

Strategy and Design

We write the strategy with your architect and M&E team, with solar layout and generation estimates.

04

Submission and Install

Support through the submission, then installation once the scheme is approved.

Questions from project teams

Energy Strategy FAQs.

Does the strategy have to be written by an accredited assessor?

Not by any general national rule. The GLA's guidance sets out the methods and evidence a council expects, not who writes the document. Some councils add their own requirements, and some certificates, such as an EPC, must come from an accredited assessor. We check your council's validation list first, and where an accredited assessor is needed we arrange that.

Which developments need an energy strategy?

In London, all major developments: 10 or more homes, or 1,000 sq m or more. Some boroughs ask for one on smaller schemes, and councils outside London have their own local policies.

Our planning permission calls it something different. Is it the same thing?

Usually. Energy strategy, energy statement, energy assessment, sustainability statement and sustainable technology strategy are all names for the same kind of document. Send us the condition and we will tell you what it asks for.

Can you also install the system?

Yes. We install solar PV and batteries, and EV charging for apartment blocks and commercial sites, so the design carries through to the build.

Do you guarantee the council will approve it?

No one can. We can make sure the solar side is accurate, buildable and clearly evidenced.

Your project

Have a Planning Condition to Deal With?

Send us the roof plans and the planning condition. We will tell you what is realistic for the roof and what your team needs for the submission.

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