Home / For businesses / Buildings / Case study

Case study

Cutting after-hours energy use in an office building

An office floor where the electricity bill did not distinguish normal working-hours consumption from whatever stayed on overnight.

The demo runs on its own: the cursor opens a person or a room, reads the data and corrects. You can also click any staff member, room or unit.

COA Edifício Kianda Tower · Floor 3 · Day shift · 08:00–18:00 Online --:-- Facilities · D. Muteka
Present on the floor—
Total power—
Highest CO2—
Technical room—
Active alerts—
↔ Open office °C— OCC— kW— ! Meeting room A °C— CO2— ! Meeting room B °C— CO2— ! Reception °C— OCC— ! Kitchen °C— kW— OCC— ! Technical room CLIM-01 DR-01 °C— RH— !
Daily log

    A representative scenario, built from the problems we see most often in this kind of site. Exact figures vary from one installation to another.

    Starting point

    The floor has an open office, two meeting rooms, reception, a kitchen and a technical room with central chilling. Facilities management reacted to calls reaching the front desk.

    Main problem

    An air conditioner or a panel left on after hours only showed up on the following month's bill, with no way to tell which room or unit was driving the consumption.

    Solution put in place

    Energy, temperature and occupancy sensors in every room feed COA Edifício, which shows the floor plan live and alerts when a panel draws power outside the expected hours, with the option to cut it remotely.

    Key results

    In the first quarter with the system running:

    -28%

    after-hours consumption logged

    14 months

    payback on the investment

    0

    trips to the technical room for a routine check

    Day to day

    What the team sees on screen

    COA-IoT
    COA Edifício — Planta do piso Hoje
    Consumo fora de horas
    -28%
    vs. trimestre anterior
    Salas ocupadas
    3/6
    -1
    CO2 mais alto
    497 ppm
    +40 ppm
    Potência por sala (kW)
    Sala técnica Open space
    Salas e equipamento
    Sala técnica Climatização ligada às 23h Fora de horário
    Sala de reuniões B Vazia, luzes apagadas Poupança ativa
    Open space 12 pessoas Normal

    COA Edifício — Planta do pisoThe floor plan, with the team moving around and each room's status.

    COA-IoT
    Sala técnica — Ficha Últimas 6 horas
    Potência
    2.4 kW
    +1.1 kW
    Temperatura
    19°C
    -2°C
    Potência (kW)
    vazia Ocupação
    +75% Consumo vs. esperado

    Sala técnica — FichaA room's record: temperature, power, occupancy and energy-saving actions.

    Does this sound familiar?

    Tell us about your site. We survey it in person and tell you, before proposing anything, what is worth measuring and at what cost.