Energy savings

Energy savings without cutting comfort or output

Electrical waste is rarely one villain device: it is a set of small excesses spread across different lines of the bill. I audit with metering, cross-check the consumption history and hand back an action plan ranked by payback — no promises, no equipment to sell you.

Metered energy audit Plan ranked by payback Home, retail and industry Typical cut of 15% to 30%
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Estimator

What is left in the bill if you cut the waste?

Drag the sliders to see the order of magnitude of a consumption cut on your tariff band. It is an honest estimate: it prioritises the conversation, it does not replace a metered audit.

12 kW
28 %

Educational estimate. The final figure depends on metering, tariff and consumption window.

Estimate

766 per month

per year: R$ 9.193

806 kWh kWh avoided/month
716,08 t CO₂ avoided
42.965 trees eq.
18 months Payback
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Where the waste sits

Where the bill usually leaks, by how often I find it

Six families of problems account for most of what an energy audit uncovers. Each one has a cheap test before it becomes an investment.

Power factor and reactive energy

Motors and transformers need reactive power to hold their magnetic field. Once the power factor drops below the 0.92 reference, the surplus appears as a separate charge on the bill and your conductors carry current that does no work.

  • Correction with a capacitor bank
  • Measured at more than one point in the board
  • Lower current and less heating on the same circuit

Ageing or oversized lighting

Fluorescent tubes on iron-core ballasts, dirty luminaires losing flux and illuminance set above what the task actually needs: together these three are usually the largest cut available in a commercial or industrial building.

  • LED retrofit with verified task illuminance
  • Presence sensors and astronomical clock
  • Independent zones per department

Motors, pumps and ventilation

A motor off its efficiency point, a pump throttled by a valve, a misaligned belt, a fan with a clogged filter. Adjustment and maintenance fix most of it before any change of installed power.

  • Load profile metered for one week
  • Variable speed only where load truly varies
  • Alignment and cleaning before replacement

Contracted demand and on-peak hours

On high voltage you pay for the capacity you reserved, used or not. Matching the contract to the real profile and moving process out of the three on-peak hours is often the cheapest action in the plan.

  • Study built on 12 months of bills
  • Downsizing when genuine headroom exists
  • Staggered and ramped starts

Compressed air and thermal loads

Compressed air is the most expensive useful energy inside a plant. A single small leak keeps the compressor running non-stop, and a pressure setpoint above what tools need multiplies the loss.

  • Ultrasonic leak hunt
  • Setpoint reviewed area by area
  • Heat recovered for thermal duty

Idle and standby loads

Corridor lights on during an empty night, machines waiting at the end of the shift, switched supplies powered with no load. Added up, idle loads explain much of the weekend and holiday consumption.

  • Contactor and timer per area
  • Automatic standby cut-off
  • Standardised end-of-shift shutdown
Deliverables

What lands in your hands after the audit

An audit that never becomes a decision sheet is a curiosity report. Every line of the document carries a measured figure, an owner and an investment band.

Energy audit package

  • Reading of 3 to 12 bills: energy, demand, reactive, time-of-use flags and tariff bands
  • Real demand measured with a power analyser for up to 7 days
  • Load profile by area, shift and critical circuit
  • Power factor verified against the reference, with correction need confirmed
  • Lighting survey with illuminance measured per task
  • Motor and variable-load inventory with estimated running hours
  • Action matrix with savings band, investment band and priority
  • Rollout plan split between zero-cost wins and capital items
  • Measurement and verification plan to prove the result afterwards
  • Technical report with ART record when a bank, auditor or head office asks

Before you buy equipment

Generating power to cover waste means paying twice: every kilowatt-hour cut from consumption also shrinks the array, the battery or the demand contract you need. Efficiency comes before generation — and the solar sizing is recalculated after the cut.

See designed green energy

What an audit usually reveals

15 % to 30% consumption cut after a complete action plan
12 months of billing history read before any investment is proposed
0.92 power factor reference below which reactive energy is charged
2 to 8 months typical band for the audit to pay for itself on larger bills

Bands observed across energy efficiency work. Actual results depend on the load profile, the tariff and the condition of the installation; this is not a savings promise.

Electrical board with a power analyser connected and a consumption spreadsheet on screen No equipment to sell
Method

Measure, correct, sustain: three layers you cannot skip

Almost every enquiry starts with something the client wants to buy. A serious plan starts with metering: without your hourly load profile, any offer of panels, capacitors or luminaires is a well-packaged guess.

  • Layer 1: measure energy, demand, reactive and time-of-use before giving an opinion
  • Layer 2: correct what costs nothing — settings, timing, maintenance
  • Layer 3: invest in what is left, starting with the shortest payback
  • Layer 4: follow the bill for 6 months and recompute realised savings
  • Layer 5: keep the indicator alive in the routine of whoever runs the site
See thermography reports Browse the portfolio
Pre-analysis

Send your bills and see where the money is leaving

With 3 to 12 bills in PDF I can point out, without a site visit, the lines that usually carry the weight: contracted demand, reactive surplus, hourly profile and the lighting share. From that reading the audit proposal comes back with scope, timeline and price.

Send bills by e-mail See sustainability

Frequently asked questions

What exactly am I paying for on the electricity bill?
Three things: active energy consumed in kWh, contracted demand in kW (where you are group A) and the taxes and surcharges levied on both. The tariff band changes the price of your kWh, not how many you use. That is why two different actions can lower the same bill: cutting kWh and renegotiating reserved kW.
I am in group B. Does contracted demand affect me?
Group B1 residential carries no demand charge: you pay energy and the tariff band only. In group B commercial, time-of-use tariffs (B3 and B4) price the same kilowatt-hour differently by hour, which makes load shifting relevant even without a capacity contract. The audit changes with the class — which is why I ask for the supply group before quoting. The access group decides which actions actually move the bill.
What are on-peak hours and can I avoid them?
They are three consecutive hours, set by the distributor, when the tariff is the most expensive of the day — usually late afternoon. Avoiding them does not mean using less power, it means moving whatever can move: laundry batches, compressors, forklift charging, pumping to an elevated tank. Often the saving comes purely from rescheduling a shift.
Is there a fine for a low power factor?
It is not a penalty in the punitive sense: when the average power factor falls below the 0.92 reference, the distributor measures the surplus reactive energy and bills it as a separate line. On one load that figure is trivial, on another it is the main villain. A correctly sized capacitor bank usually closes the topic in a single intervention.
How long until the audit pays for itself?
On sites with a meaningful bill, typically 2 to 8 months, because the first wave of actions is settings and timing — almost no capital involved. In a small home the logic differs: comfort and safety upgrades come bundled with efficiency there, and the audit pays off as documentation you needed anyway.

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How an energy savings plan is actually built

A savings plan starts at the bill line, not at the equipment. First you separate active energy (kWh consumed), demand (kW reserved or recorded at peak) and reactive (surplus charged once the power factor drops below the reference). Then you cross that reading with the hourly profile metered on site, because the price of one kilowatt-hour changes with the clock. Only after that does a conversation about luminaires, motors, capacitors or arrays make sense: every action now has a predicted effect on a specific line of the document.

  • The audit starts from 3 to 12 bills and one week of metering, never from generic watts per square metre
  • Each action carries a savings band, an investment band and a payback, never a single figure
  • Zero-cost actions (settings, timing, maintenance) are scheduled before capital items
  • The plan is reviewed after 6 months against real bills, not the original simulation

What goes into the maths of each efficiency action

Swapping to LED looks simple, but real savings depend on how many hours the room is occupied, the illuminance the task requires and how much heat the air-conditioning no longer has to remove. A more efficient luminaire also lightens the circuit, which can free board space for whatever comes next. On motors, the benefit of a variable-speed drive only appears if the load genuinely varies: on a pump with a fixed curve, the investment may repay far slower than the catalogue promise suggests.

  • Lighting: running hours, task illuminance and the cooling load you no longer need to reject
  • Motors: metered load profile, service factor and operating hours per shift
  • Reactive: monthly surplus cost plus the cable life saved from overheating
  • Demand: how the peak hits the contract, with realistic headroom for growth

Why you should measure before buying energy

The most common offer in the market is generation sold to someone who has not yet fixed their waste. The result is an oversized system: more modules than the roof can justify, more capital than necessary and surplus energy credited at a low rate. Measuring first shrinks the problem to its real size — if a 15% to 30% cut comes from adjustment and maintenance, the photovoltaic sizing falls in the same proportion, and the money is left for storage, vehicle charging or simply for staying in the budget.

  • An audit reduces the kilowatt-hours the generation would have to cover
  • A corrected load improves self-consumption and cuts cheap surplus credits
  • Identified board headroom avoids rework when the generator is installed
  • Metered indicators support environmental reporting and internal consumption targets
Talk to the technical lead

Let us size your savings before the design is signed off

Typical reply within 4 business hours · Worldwide from Brazil

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