About E4S

E4S - Efficiency for Sustainability is an expert energy consultancy
and engineering company.

What we do?

How can we help you:

Efficiency is doing things right;
effectiveness is doing the right things.

-- Peter Drucker --

Our Team

 E4S team incorporates specialized professionals focused in their clients needs. E4S does not act alone in the market, instead establishes partnerships in order to obtain the best solution for it's clients


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Some clients we've worked with

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E4S is developing Energy Management projects for several Councils and private companies that are demanding a quick change and a new approach in methods and processes linked to Energy and Sustainability.


In an ever more demanding and volatile market it becomes imperative to approach a proactive ethic through listening and not imposition establishing partnerships with and for our clients that ensure the quality of our services and exceed their quality expectations

Are you ready?

Get in touch


+351. 234 094 120

Call to the national fixed telephone network

PCI Creative Science Park Aveiro Region
Via do Conhecimento
Edifício Central, 3830-352 Ílhavo . Portugal

Contact Us

At E4S we acknowledge our clients directives and the urgency of access to trustworthy quality services. Please do not hesitate in contacting us with your queries.

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