Our Main Services

Sustainability (Planning)

Completing a ‘Sustainability’ or ‘Energy’ Statement to meet the requirements of a specific Local Authority can be very time consuming.   Outlining your commitment to deliver renewable or low carbon energy can affect your LPA’s overarching decision.  From total energy predictions, low carbon technology & overheating risk reviews to strategic site assessments EES have the solutions!

Many LPAs set a requirement of submitting a Sustainability Statement or Energy Statement with every planning application. The Statement usually requires the developer to demonstrate how they have considered energy efficiency as part of their proposals. This will often include consideration of orientation and passive solar utilisation. It may require demonstration of the schemes ventilation strategy to reduce the risk of overheating. This approach is called ‘A Fabric First’ approach whereby the designer considers the inherent energy efficiency of the scheme before considering energy recovery or low energy technologies as demonstrated in the pyramid below.


Sometimes depending on the size of the scheme the LPA will require calculations showing  how the proposal will deliver a certain percentage of the sites projected energy from low carbon / renewable means.

We can provide all the reports needed for such applications.

We also provide the following services for developers in support of planning applications:

  • Daylight / Sunlight predictions
  • Overheating Assessments
  • Noise Assessments (PPG 24 / BS4142)

Sustainability (Architects)

At EES, we often work with architects, helping to deliver sustainable solutions for residential & commercial schemes & small single dwellings. Using 3D thermal modelling techniques linked with dynamic simulation & hourly weather data we can appraise all interactions affecting building energy performance levels.  Get us on board from the earliest stages of a scheme (RIBA Stage 1/2) to ensure maximum benefits are unlocked.

  • Passive Solar Assessment

EES use the EDSL Tas simulation modelling to assess the benefits of changing orientation or the use of shading / brize soleil or even trombe walls to maximise the benefit of solar gain during the heating season whilst restricting the impact of overheating during the summer months.

  • Daylight / Sunlight Assessments

EES can provide detailed assessments using BRE methodology: Building Research Establishment (BRE) document ‘Site Layout Planning for Daylight and

Sunlight: A guide to good practice (2011) https://www.brebookshop.com/details.jsp?id=326803

  • Overheating Assessments

Utilising Dynamic Simulation techniques EES can produce predictions of possible overheating risk.  We use approved methodology such as Adaptive comfort criteria outlined in CIBSE TM 52 for Non Domestic Buildings or CIBSE TM 59  for dwellings http://www.cibse.org/knowledge/knowledge-items/detail?id=a0q0O000009wZB8QAM

Daylight & Sunlight Assessments

Tackling the increasing demand for housing versus heavily developed areas.  How are you ensuring that your properties are retaining enough day or sunlight? Stay ahead of your LPA’s request for a day & sunlight report in heavily developed areas with EES; helping you address Daylight to Windows Tests, Vertical Sky Components, Daylight Distribution, Annual Probable Sunlight Hours, & Overshadowing to Gardens & Open Spaces.  Call us today for a FREE consultation. Your only energy efficient consultant.

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We typically include the following tests in our assessments:

Daylight to Windows Test

  • Vertical Sky Component (VSC): Ratio of the part of illuminance, at a point on a given vertical plane, that is received directly from a CIE standard overcast sky, to illuminance on a horizontal plane due to an unobstructed hemisphere of this sky. Usually the ‘given vertical plane’ is the outside of a window wall. The VSC does not include reflected light, either from the ground or from other buildings.

Daylight to Rooms

  • Daylight Distribution / No Sky Line: The outline on the working plane of the area from which no sky can be seen
  • Average Daylight Factor: Ratio of total daylight flux incident on the working plane to the area of the working plane, expressed as a percentage of the outdoor illuminance on a horizontal plane due to an unobstructed CIE standard overcast sky. Thus a 1% ADF would mean that the average indoor illuminance would be one hundredth the outdoor unobstructed illuminance,

Sunlight to Windows: –

  • Annual Probable Sunlight Hours (APSH): The long-term average of the total number of hours during a year in which direct sunlight reaches the unobstructed ground (when clouds are taken into account)


  • Overshadowing to Gardens and Open Spaces

Minimum Energy Performance Standards (MEPS) Review Services

From 1st April 2018, the Energy Act 2011 made it unlawful to let residential or commercial properties with an EPC Rating of F or G.  Don’t be caught out by your ratings and get our team of consultants to help with EPC reviews & detailed property assessments, energy efficiency & energy performance risk assessments, & EP reports & certification for statutory compliance.  Helping properties comply across the UK.


EES Ltd has many years’ experience in energy efficiency and has put together a range of services to support landlords in meeting the requirements of these regulations.

EES Ltd services specifically include:

  • Reviews of the EPC status of individual buildings or complete property portfolios
  • Detailed assessments of properties with EPC rating F or worse
  • Review of existing EPC Recommendation Reports to determine requirements need to attain an EPC rating of E or better
  • Provision of energy efficiency performance risk assessment across property portfolios
  • Provision of Energy Performance reports and certification for statutory compliance.