Energy Efficiency

Energy efficiency is the most cost effective way of reducing our carbon emissions.

Whether you've already implemented solutions or are yet to consider the options available, here's the information you need to make informed decisions about managing the energy efficiency of your home and your workplace.

At Home

When it comes to saving energy, the best place to start is your own home. Here, you have unlimited control over your own habits and consumption patterns which equals the greatest opportunity to bring about change. How much you could save on your energy bills is up to you, but implementing some of the low cost steps shown below could help to save up to 20% every year.

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At Work

Energy is the largest controllable cost involved in running office buildings. Implementing simple and cost effective measures can save your business an average of 20% on its energy bills. In addition to this, creating an efficient and more comfortable working environment can give rise to better employee productivity and help prevent absence due to sickness.

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ESOS stands for Gibraltar Energy Savings Opportunity Scheme and applies solely to large organisations.  

A large organisation is defined as any Gibraltar company that either:

  1. employs 250 or more people, or 
  2. has an annual turnover in excess of 50 million euro (£38,937,777), and an annual balance sheet total in excess of 43 million euro (£33,486,489). 

An overseas company with a Gibraltar registered establishment which has 250 or more Gibraltar employees (paying income tax in Gibraltar) will also qualify as a large organisation.

Your organisation qualifies if, on the 31st of December 2014, it meets the ESOS definition of a large organisation.

If your organisation qualifies under ESOS then you are required to carry out an ESOS assessment every four years.  These assessments involve an audit of the energy that’s used in buildings, industrial operations and transport.  Using this information, together with site survey findings, recommendations for energy savings opportunities are compiled.

Organisations who meet the specified criteria must have registered with the Department of the Environment and Climate Change at

For more details on the ESOS scheme, your obligations and how to comply, check out the ESOS Government webpage and the full ESOS guidance document.

When you have completed your ESOS assessment you must submit a notification of compliance to the Department of the Environment and Climate Change via

All participants need to have their ESOS assessment signed off by an ESOS lead assessor, please refer to the ESOS webpage for details on the Government Accredited Lead Energy Assessors.