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Calculators

What you need
Your CFE bill at hand. Nothing else
What they do not do
Promise a savings percentage. That depends on your load curve
Where they run
In your browser. We do not send or store anything you type
The three
Bill reading · power factor correction · preliminary battery bank sizing
The real number
This is an order of magnitude; the real number comes from measuring your plant

Three calculations you can do without us

None of these calculators will tell you how much you will save, because that cannot be known without measuring. What they do is answer three specific questions with the correct arithmetic, and tell you at what point the answer requires a metering campaign.

Bill readingPower factorBattery bankWhat they do not calculate

Calculator 1

Reading your GDMTH bill

Four numbers from your bill and we tell you what share of your bill pays for power instead of energy, what your effective cost per kilowatt-hour is, how peaky your operation is, and whether the Grid Code (Código de Red) applies to you.

Data from your billA representative month
Where the charges come from

On a GDMTH bill, the capacity and distribution charges are the ones billed on power: they depend on the maximum demand you recorded, not on how much you consumed. They are itemized on the back of the bill or in the billing detail. If your bill groups them differently, send it and we will read it with you.

Point of connection.
Point of connection
Metering at switchboards.
Metering at switchboards
Switchgear and protection.
Switchgear and protection
Thermography of connections.
Thermography of connections

Calculator 2

How much compensation you need to reach 0.97

This is physics, not estimation. With your active demand and your current power factor, the reactive power to be compensated comes from an exact trigonometric identity. The result is the starting point for sizing, not the sizing.

Reactive compensationQ = P · (tan φ₁ − tan φ₂)
Why this number is not yet your capacitor bank

The kVAr the calculation yields are what is needed at that operating point. Your plant does not operate at a single point: demand and power factor shift with the shift and the process, which is why a bank is sized on the measured distribution, not on an average.

And there is a second, more expensive reason: if your installation has harmonic distortion, a bank sized only with this calculation can resonate with the installation's inductance and amplify the current instead of correcting it. It is the most common cause of capacitors that burn out within a few months. The harmonic spectrum is measured before buying the bank.

Calculator 3

Order of magnitude of a battery bank for peak shaving

If you know what demand you want to bring it down to and how long your peak lasts, the minimum power and energy of the bank are arithmetic. What is not arithmetic is whether the peak behaves the same every day, and whether the equipment works depends on that.

Preliminary sizingOrder of magnitude
What this calculation deliberately ignores

The system's round-trip efficiency, battery degradation over the years, whether the off-peak charging window is long enough to recharge before the next peak, and whether the peak you measured is the worst of the month or just that day's. Each of those four raises the real size. Take the result as the floor, never as the purchase figure.

What they do not calculate

Three questions no calculator answers

We tell you this on the same page where we offer you the tools, because the alternative would be letting you believe you already have the answer.

01

What time does your peak occur?

No calculator knows. And it is the data point that decides whether a solar project touches your billable demand or only your consumption. It comes from the measured load curve.

02

Is your low power factor reactive or harmonic?

The compensation calculation assumes it is reactive. If it is distortion, the bank does not solve it and can make it worse. A Class A analyzer tells them apart, not a formula.

03

Do you comply with the Grid Code?

The calculator tells you whether it applies to you, which is different from whether you comply. Compliance is assessed on short-interval measurements using a percentile criterion, and your bill only shows the average for the period.

All three are answered with a seven-day campaign. And before that, in an initial review with your bill on screen, we tell you what is worth measuring.

How we work

One accountable partner, from metering to operation

We measure

Seven-day campaign with a Class A analyzer.

We design

Engineering based on your real load curve.

We build

Supply and installation inside your fence line.

We operate

GTO Vigía sustains the result after construction.

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Energy solutions

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Book an initial review of your plant

In a short meeting we review your bill with you, on screen, and tell you what is worth measuring.

We work with plants on medium and high voltage. By sending you accept our privacy notice.

Strengths

What backs every project

GTO Energy offers electrical engineering tailored to your plant. Request your diagnostic and start by knowing where the opportunity is.

01

We measure before we propose

Seven days with a Class A analyzer at your facility, before quoting.

02

One accountable partner

Engineering, supply and installation inside your fence line.

03

Diagnostic with no down payment

Fully creditable if you implement. No finding, no charge.

04

Current regulation

Compliance reports based on RES/550/2021, filed with the CNE and CENACE.

05

Operation and maintenance

GTO Vigía: monitoring, monthly reporting and priority service.

06

Third-party systems

We service plants installed by others, starting with a condition survey.