We offer a range of energy efficiency surveys designed to reduce energy costs and environmental impact.

Why are energy surveys important?

  •  Building users are required by law to undertake energy surveys and maintain building energy certificates.
  •  Significant cost savings on energy bills are often achievable with low or no cost improvements
  •  More costly improvements can often pay for themselves quickly and even be funded through grants and finance.

Display Energy Certificates (DECs)

From 9th July 2015 all public buildings with a total floor area of 250m2 or greater are obligated by law to be in the possession of a valid Display Energy Certificate (DEC) and Advisory Report (AR).

DECs highlight the energy performance of building using a scale that runs from A to G, where A is very efficient and G is the least efficient. The rating is based on the actual amount of metered energy used by the building over a 12 month assessment period, while the Advisory Report contains recommendations for improving the energy efficiency of the building (i.e. its fabric and associated services such as heating, ventilation and lighting).


Where the building has a total floor area of 1,000m² or more, the DEC is valid for 12 months. The accompanying advisory report is valid for 7 years. For buildings with a floor area measuring 250m² – 999m², both the DEC and advisory report are valid for 10 years.

Over the last two years Tom Muncey, NEP’s commercial Energy Assessor has delivered over 600 DECs to schools, leisure centres, rugby clubs and even recycling centres.

NEP Energy Services has longstanding contracts with Nottinghamshire County Council, Coventry City Council and Warwickshire County Council.  NEP is also part of Derby City Council’s new DEC framework launching soon.

Energy Performance Certificates (EPCs)

EPCs rank a building’s energy efficiency through the use of a simple A-G rating. The certificate shows how energy efficient a building is and how much could be saved on future energy bills if they make improvements.

Renewable Feasibility Studies

We deliver feasibility studies for renewable energy systems;  we can also offer support as an independent expert in ensuring best value in finding funding, planning applications, procurement and project management of technology solutions.

Opportunities Assessment – Energy Efficiency Survey 


Going beyond legal compliance and certification, NEPes offer independent, in-depth energy efficiency surveys. Recommendations made in the report provide sufficient detail to inform investment decisions, financing or funding applications.

The reports give details of the costs and savings for a range of energy efficiency measures suitable for your building and each report can be tailored specifically to suit your building and your requirements.

As a minimum, each survey will investigate:

  • Heating, Cooling and Ventilation
  • Lighting
  • Building fabric
  • Outline assessment of the potential for renewable energy generation

You will be provided with a site-specific energy survey report, detailing energy efficiency opportunities, their installation costs and likely savings potential.

Air Conditioning Assessment – TM44

A TM44 Assessment is an assessment completed on an air conditioning system. Building owners and managers in England and Wales who are responsible for controlling air conditioning systems; with an effective rated output of more than 12kW, are required to ensure compliance with the regulations as set out by the government.

In addition, organisations seeking certification for ISO 14001 & ISO 18001 are also required to show compliance with government regulations for air conditioning units.

Regulations stipulate that inspections must be carried out regularly by an independent accredited energy assessor and must be no less than five years apart.

Failure to commission, keep or provide an air conditioning inspection report which has been lodged on to the Central Register could result in fines from £300 per offence (per a building / a unit). These fines could be repeated at the discretion of Trading Standards enforcement officer on a daily, monthly, quarterly or annual basis.

A further penalty can be issued for failure to provide a copy of the air conditioning inspection report when requested, to an officer of an enforcement authority within seven days. This is fixed at £200 (per a building / a unit).

If your organisation has an air conditioning system which requires a TM44 Assessment NEP Energy Services can provide you with a quote for this service. To obtain a quote please provide the following information: –

  1. Asset register of all air conditioning units – make/model/size etc
  2. Site plan with the location of each unit
  3. Scale site plan of all buildings
  4. Record of maintenance documents for all air conditioning units
  5. Method of control – if available

Below is an outline of what the TM44 inspection will include: –

  • A visual assessment of the air conditioning system
  • An examination of the air conditioning equipment and controls
  • A review of sizing

Once the inspection is complete the assessor will issue  a certificate and report including the following: –

  • The current efficiency of the equipment
  • Suggestions for improving the equipment’s efficiency
  • Any faults and suggested actions
  • How to reduce air conditioning use
  • Identify opportunities to replace older, less energy efficient or oversized systems with new energy efficient systems

Contact Us

For more  information or to arrange an energy survey(s) please contact Darren Barker.
E: darren.barker@nottenergy.com   T: 0115 985 3008