Es­sen 2026

Note: This is a sum­mary of the 28th In­ter­na­tion­al Pass­ive House Con­fer­ence. You are look­ing for something spe­cif­ic? Then please also have a look at the archived ver­sion of the of­fi­cial 28IPHC conference website. In this archive, you will find lots of de­tailed in­form­a­tion on the speakers, the exhibitors, the programme, and much more!

 

This year's motto: "Driv­ing trans­form­a­tion with en­ergy ef­fi­ciency!"

28th In­ter­na­ti­on­al Pass­ive House Con­fer­ence | 24 and 25 April 2026, Haus der Tech­nik in Es­sen, Ger­many

The 28th In­ter­na­tion­al Pass­ive House Con­fer­ence was a great suc­cess! The dy­nam­ic for­um again con­nec­ted people who genu­inely care about bet­ter build­ings and a bet­ter fu­ture.

The four con­fer­ence days were packed with in­ter­act­ive work­shops, in­form­at­ive talks, count­less con­ver­sa­tions, and im­press­ive build­ing tours that offered valu­able in­put for every­one. What really stood out was the sense of shared pur­pose and mo­tiv­a­tion to take ac­tion across the whole com­munity.

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Two an­niversar­ies: 30 years PHI / 35 years first Pass­ive House

We also seized the op­por­tun­ity to pop the corks: To­geth­er we re­flec­ted on everything that has happened since the found­ing of the Pass­ive House In­sti­tute 30 years ago. The par­ti­cipants also shared their own ex­per­i­ences and memor­ies of their in­volve­ment in the en­ergy ef­fi­ciency move­ment. Last but not least, we cel­eb­rated the 35th birth­day of the world's first Pass­ive House in Darm­stadt!

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Spe­cial in­ter­view with Prof. Dr. Wolfgang Feist (founder of the Pass­ive House In­sti­tu­te) on the oc­ca­sion of these an­niversar­ies:

Read interview

 

Big-pic­ture think­ing paired with tech­nic­al de­tail

What made the con­fer­en­ce es­pe­cially en­ga­ging was the range of top­ics. As one of the con­fer­en­ce speak­ers, Fernando Ru­bio Ezquieta from WW+P Ar­chi­tects, shared, one mo­ment you’d be hear­ing about glob­al eco­nom­ic shifts needed to tackle cli­mate change, and the next you’d be deep in­to the spe­cif­ics of vent­il­a­tion sys­tems or in­dus­tri­al doors. That mix of big-pic­ture think­ing and tech­nic­al de­tail is ex­actly what makes this field so in­ter­est­ing and so im­pact­ful.

Bey­ond the present­a­tions, the real ma­gic was in the people. Par­ti­cipant Va­sil­is Gi­an­no­poulos from In­ter­norm UK summed it up well: it was a chance to ex­change ideas, learn from real pro­jects, and have mean­ing­ful dis­cus­sions about how dif­fer­ent mar­kets are evolving. But just as im­port­ant was the chance to con­nect in per­son, see­ing fa­mil­i­ar faces and meet­ing col­lab­or­at­ors face-to-face after years of work­ing to­geth­er re­motely.

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Di­ver­se top­ics - ret­ro­fit­ting con­tin­ues to be of key im­port­ance

There were also some power­ful con­ver­sa­tions about the big­ger con­text. iPHA Af­fil­i­ate Ken Leven­son from the Pass­ive House Net­work high­lighted ses­sions that con­nec­ted build­ing per­form­ance to top­ics such as re­source use, so­cial re­spons­ib­il­ity, and en­ergy in­de­pend­en­ce, re­mind­ing every­one that what we do in build­ings ties dir­ec­tly to much lar­ger glob­al chal­lenges.

One theme that kept com­ing up was the im­port­ance of ret­ro­fit­ting ex­ist­ing build­ings. Laszlo Lepp, from the Pass­ive House In­sti­tu­te Inns­bruck and iPHA Af­fil­i­ate Passivhaus Aus­tria, put it in­to per­spect­ive: while new builds of­ten get the spot­light, the real trans­form­a­tion lies in what we already have. En­erPHit ret­ro­fits, with their step-by-step ap­proach and meas­ur­able res­ults, are be­com­ing a key part of the solu­tion, even if they come with chal­lenges around com­plex­ity and cost. Still, the mes­sage was clear: this isn’t a niche top­ic any­more, it’s cent­ral to mak­ing real pro­gress.

By the end of the con­fer­en­ce, there was a strong sense of mo­mentum and ex­cite­ment, too. Events like this re­mind us that our daily work is part of something big­ger!

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Highly en­ergy-ef­fi­cient beacon pro­jects in the re­gion

On Sunday, the con­fer­ence par­ti­cipants had the op­por­tun­ity to vis­it highly en­ergy-ef­fi­cient beacon pro­jects in the area. A big thank you goes to the re­gion­al agency NRW.Ener­gy4Cli­ma­te and to all ar­chi­tec­tur­al of­fices and build­ing users in­volved in the tours for their com­mit­ment and great sup­port be­fore and dur­ing the ex­cur­sions.

This year, par­ti­cipants could choose between four tours fo­cus­ing on: "Schools / nurs­er­ies", "En­ergy-ef­fi­cient homes in Es­sen - Bo­chum - Dortmund", "Dis­tricts in Co­logne / Düs­sel­dorf" und "En­ergy-ef­fi­cient homes in Co­logne".

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SA­VE THE DA­TE - Bye bye Es­sen, wel­come to Inns­bruck!

The next In­ter­na­tion­al Pass­ive House Con­fer­en­ce will take place at the Uni­versity of Inns­bruck on 2 + 3 April 2027.

Would you like to fea­ture in the con­fer­en­ce pro­gramme? Feel free to sub­scribe to our con­fer­ence news­let­ter so you do not miss any up­dates!

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