We must collect certain data when you visit this website for security purposes and so it functions properly. We also use cookies to enhance the performance of our website, perform analytics and display relevant advertising to you. We recommend you accept all cookies to help us give you the best experience possible whilst using our website.
Content Blocked
Content from YouTube has been blocked by your settings. Enabling this content will set cookies on your device. See Cookie Policy for more information.
<div class="header-video video-embed" data-embed-url="https://www.youtube-nocookie.com/embed/5h0yN8xfO8c?autoplay=1&modestbranding=1&rel=0" data-poster-id="465957">
<noscript>
<img srcset="https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_large_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120 2000w, https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_medium_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120 1500w, https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_small_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120 1000w"
src="https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_large_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120"
sizes="100vw"
width="2000"
height="1125"
alt="Jose on stage with a panel of seated speakers in front of a large projection screen">
</noscript>
<img
data-srcset="https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_large_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120 2000w, https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_medium_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120 1500w, https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_small_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120 1000w"
data-src="https://cdn.cundall.com/uploads/images/Video/10-years-later_A-proven-path-to-nearly-zero-energy-buildings-site/_large_poster_image/465957/10-years-later-A-proven-path-to-nearly-zero-energy-buildings.webp?v=1744712120"
src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
sizes="100vw"
width="2000"
height="1125"
class="lazy lazy--pending"
alt="Jose on stage with a panel of seated speakers in front of a large projection screen">
<button class="header-video__play-button" aria-label="Play video"></button>
</div>
10 years later: A proven path to nearly zero energy buildings
A decade ago, Jose Castilla, Partner at Cundall Spain, pioneered a methodology for designing nearly zero energy buildings. His structured approach - prioritising passive design, energy efficiency, and renewable integration - was remarkably ahead of its time. Today, with stricter regulations and urgent climate targets, these principles are more relevant than ever.
In this conference talk from 2016, Jose outlines the step-by-step strategy that has helped reduce energy consumption in office buildings by up to 87%. What was once an innovative theory has now become a proven practice - a testament to Cundall's leadership in sustainable engineering.
This video was originally recorded at the 3rd Nearly Zero Energy Buildings Congress and is the intellectual property of Grupo Tecma Red S.L., published on CONSTRUIBLE. Used with permission. Original source: José Castilla, Cundall España - III Congreso EECN • CONSTRUIBLE
Our website uses cookies to distinguish you from other users of our website. This helps us to provide you with a good experience when you browse our website and also allows us to improve our site.
A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer if you agree. Cookies contain information that is transferred to your computer\'s hard drive.
Strictly necessary cookies
These are cookies that are required for the operation of our website. They include, for example, cookies that enable you to log into secure areas of our website, use a shopping cart or make use of e-billing services.
These allow us to recognise and count the number of visitors and to see how visitors move around our website when they are using it. This helps us to improve the way our website works, for example, by ensuring that users are finding what they are looking for easily.
These cookies record your visit to our website, the pages you have visited and the links you have followed. We will use this information to make our website and the advertising displayed on it more relevant to your interests. [We may also share this information with third parties for this purpose.]
