European Citizens' Panel on the Energy Performance of Buildings Directive

160 citizens · 6 weekends in Brussels · October–December 2026 · in 24 languages

Lottery date · 16 August 2026 Status · selection rehearsal — not yet locked Budget · €120k (CERV + DG ENER) Method · stratified random selection (leximin-fair)

Stage 1 · letters sent

2 100 000

stratified random sample of EU population registers, postal delivery

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Stage 2 · applications received

12 847

0.61% response rate — in line with 5 prior EU assemblies (range: 0.4%–1.1%)

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Stage 3 · lottery pool

12 847

applicants entering the stratified lottery — 160 will be drawn

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Stage 4 · selected

160 + 80

160 seats + 80 reserves — invitations posted no later than 30 August

Stratification quotas

Selection targets vs current draw — 6 dimensions, 26 constraints

Member state · 27 quotas target ∝ population · 24 / 27 met

32 / 32

26 / 26

21 / 23

17 / 17

15 / 14

7 / 7

6 / 6

4 / 4

3 / 3

2 / 3

2 / 2

1 / 1

0 / 1

1 / 1

Age band target ∝ EU adult population · 4 / 4 met

CategoryPool fit (filled = current)TargetCurrent

16–29 34 (21%)35 (22%)

30–44 42 (26%)43 (27%)

45–64 51 (32%)51 (32%)

65+ 33 (21%)31 (19%)

Education · ISCED level target ∝ Eurostat distribution · 2 / 3 met

CategoryPool fit (filled = current)TargetCurrent

Less than secondary 35 (22%)23 (14%)

Upper secondary 74 (46%)75 (47%)

Higher education 51 (32%)62 (39%)

Gender target 50 / 48 / 2 (self-declared) · 3 / 3 met

CategoryPool fitTargetCurrent

Female 80 (50%)80 (50%)

Male 77 (48%)78 (49%)

Non-binary / other 3 (2%)2 (1%)

Settlement type DEGURBA / Eurostat · 2 / 3 met

CategoryPool fitTargetCurrent

City 64 (40%)66 (41%)

Town / suburb 51 (32%)55 (34%)

Rural area 45 (28%)39 (25%)

Household income · 5 quintiles self-reported on application · 4 / 5 met

CategoryPool fitTargetCurrent

Lowest 20% 32 (20%)27 (17%)

2nd quintile 32 (20%)33 (21%)

Middle 32 (20%)32 (20%)

4th quintile 32 (20%)33 (21%)

Top 20% 32 (20%)35 (22%)

Method: stratified random selection using the leximin-fair algorithm (Flanigan et al., 2021). Every applicant has positive selection probability, and the selection is as fair-as-possible across all 26 stratification constraints. Compatible with the Sortition Foundation's open-source Stratification tool.

Selection run state

Rehearsal · 16 Aug 2026

Iterations1 000

Constraints met23 / 26

Worst-segment selection probability0.012

Best-segment selection probability0.041

Last run2 min ago

3 quotas unmet:

· LU (Luxembourg) — 0 / 1 applicants of valid age in pool

· Education-lower — 23 of 35 target; consider raising rural-postal outreach weight

· Settlement-rural — 39 of 45 target; same cause

Selected · preview

First 8 of 160 (anonymised)

#	Country	Age	Edu	Settlement
001	DE	34	upper-sec	city
002	FR	67	lower	rural
003	HU	72	lower	rural
004	ES	28	higher	city
005	PL	51	upper-sec	town
006	IT	19	upper-sec	town
007	NL	44	higher	city
008	RO	59	lower	rural

Full list available after lottery is locked. Selected citizens are notified by post within 14 days.