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// case study · residential

private residence.

a single-family house on the caribbean side of panamá, designed against an honest net-zero target, not the certificate version. simulation drove the section before the plan was settled.

private residence
location
colón, panamá
year
2025
area
784 m²
typology
residential
status
in process
role
architecture + energy modelling
100%
// the proof

net-zero target.

site-balanced annual energy · in design, simulated against tocumen tmy

// the brief

what the climate asked for.

colón is on the caribbean side of the isthmus, hotter, wetter, and with a softer breeze than the pacific side. the client asked for a house that did not need a grid connection to be comfortable, not a house that *looked* sustainable.

the brief is honest, which is why the project takes its time. the model is asked questions weekly and the section moves with the answers.

// the approach

how we worked the problem.

the design opens with three rooms tested against the same site: orientation, ventilation, and roof. the orientation set the long axis east-west to keep the short faces facing the sun. the ventilation study set the apertures by the prevailing northeast trade. the roof became a single overhanging plane, shading the south of the house and carrying the photovoltaic array on its upper face.

this is a project in process. the numbers will firm as the building is built.

// cumulative strategies

each move contributes incrementally.

performance is not one heroic intervention. it is the small decisions, added up. each row below is a number the model produced.

01
orientation
long axis east-west; short faces on east and west minimised; north and south extended.
-6.4%
02
roof
continuous overhanging plane, 1.5 m deep on south; pv array on the upper face sized to annual consumption.
-9.1%
03
envelope
locally-fired clay block with a ventilated rainscreen; r-25 roof.
-7.2%
04
ventilation
cross-section between northeast openings and south chimney; ceiling fans throughout.
-5.8%
result
site-balanced energy target
net zero
a house that asks for less, so the panels can give it everything.
// project outcome · in the team's own words