Latin America’s Industrial Power Bill: Reactive-Power Floors and the Drought Factor

In most of the world, a poor power factor is something a regulator might frown on and a tariff might quietly punish. In Brazil, it is a number on the bill. Every commercial and industrial customer is required to hold a monthly-average power factor of at least 0.92, and any reactive energy drawn beyond that floor is metered and charged as a distinct line item—energia reativa excedente. The obligation is not buried in a technical annex; it sits on the invoice, alongside the kilowatt-hours.

Colombia frames the same idea differently but to the same end: excess reactive energy is billed under the rules its energy regulator sets, so a site that runs an uncorrected load pays for the inefficiency directly. Across the region—Mexico, Argentina, and others—the pattern repeats in various forms. The reactive-power floor is regulated, and crossing it costs money.

Layered over that is a second, less predictable force. Latin America’s grids are among the cleanest on earth, but they are clean because they are wet: hydropower dominates, and so price and reliability move with rainfall. A dry year does not just raise the bill—it can push a system to the edge of rationing. This article maps both threads through the region’s two grounded cases, Brazil and Colombia, and explains why, here, voltage stabilisation and reactive-penalty removal protect revenue, not just margin.

Section 01

The clearest expression of this is Brazil. Under ANEEL’s Resolução Normativa 1000/2021, every commercial and industrial customer must maintain a monthly-average power factor of at least 0.92. Fall below it—as almost any site with motors, compressors, or refrigeration will, uncorrected—and the distributor meters the excess reactive energy and bills it separately. Power factor is not advisory here; it is a contractual threshold with a price attached.

The result is that correcting power factor in Brazil does something direct and recoverable: it removes a charge that appears on every monthly invoice, independent of the energy rate. With commercial all-in power running around R$0.79/kWh (roughly US$0.145) and industrial closer to R$1.03/kWh (around US$0.19), the underlying bill is already substantial. The reactive penalty sits on top of it.

Colombia reaches the same outcome through its own framework. Excess reactive energy is billed under the rules set by CREG, the country’s energy and gas regulator—so an uncorrected site pays for the reactive power it draws, just as in Brazil. The precise power-factor threshold and charge structure are set in regulation and should be confirmed with the distributor, but the principle is settled: reactive energy beyond the allowed band is a cost the customer carries. The wider region echoes the theme—Mexico’s utility, CFE, applies a bill-level power-factor surcharge below roughly 0.90, and Argentina bills reactive energy above about a 0.85 power factor.

Section 02

Brazil and Colombia run two of the cleanest large grids in the world, and for the same reason: water. Brazil draws roughly 88% of its electricity from renewables, with hydropower alone around 52%. Colombia is hydro-dominated to a similar degree, at roughly 65–70%. That makes both systems low-carbon and, in a normal year, comparatively cheap. It also makes them hostages to hydrology. The exhibit below summarises the two markets.

In Brazil, the link between rainfall and price is formalised in the bandeira tarifária—the colour-coded scarcity surcharge that flags the cost of generation each month. In wet months the flag is green and no surcharge applies; as reservoirs fall and the system leans on costlier thermal plant, it turns yellow and then red, and a surcharge is added per kilowatt-hour. The dry year, in other words, is priced directly into the bill, on top of the reactive line item already there.

Two patterns connect the markets. First, the reactive-power floor is billed in both—explicitly at 0.92 in Brazil, through CREG’s rules in Colombia—so correcting power factor removes a real charge regardless of the weather. Second, hydro dependence means the energy bill itself is volatile, rising in dry years through Brazil’s scarcity surcharge and through the supply stress that a drought puts on the whole Colombian system. The entry point is the penalty; the larger story is resilience.

Section 03

The reliability risk in Latin America is not the chronic, daily load-shedding of a chronically short grid—it is the periodic, severe stress that a dry year imposes on a system built around water. The most recent demonstration was sharp.

The 2024 El Niño drove Colombia’s reservoirs down to roughly 30% of capacity. The country came close enough to rationing that the government weighed emergency measures, and it halted electricity exports to neighbouring Ecuador to protect domestic supply. In Brazil, the same hydrological pressure is what turns the bandeira tarifária red and pushes the scarcity surcharge up—the price signal of a system drawing harder on its thermal reserves because the water is not there.

Colombia carries a second, more localised reliability problem. The Caribbean coast has long suffered chronic power-quality and continuity issues—sags, interruptions, and an unstable supply—independent of the national drought picture. For a site on that coast, voltage stabilisation is not a hedge against a once-in-a-decade dry year; it is a daily necessity. The same is true, in a different way, for the cold chain: a cut-flower exporter on the Bogotá savanna, shipping perishable stems by air, cannot afford the refrigeration to falter when the grid dips.

Section 04

This is where the Latin American case departs from a simple efficiency argument. On a grid that swings with the rains and, on the Colombian coast, sags routinely, an unstable supply is not just a cost—it is a threat to the product itself. Voltage sags and brownouts cause motors to stall, drives to trip, and refrigeration cycles to break. For most of the sectors in scope, a tripped line is lost output; for the cold chain, it can be lost stock.

Consider the cut-flower export trade concentrated on the Bogotá savanna. The product is harvested, chilled, and flown out within a tight window; an unbroken cold chain is the difference between a saleable export and spoilage. The same logic applies to food and beverage cold storage, to pharmaceutical and hospital refrigeration, and to any continuous process that cannot simply be restarted. In these settings, holding voltage steady through a sag is not an efficiency gain—it is the protection of revenue that would otherwise walk out the door as scrap.

The harmonics dimension runs alongside. As variable-speed drives, rectifiers, and inverter-based equipment fill modern plants—and as data-centre build-out accelerates in São Paulo and around Bogotá, which holds roughly 80% of Colombia’s data-centre capacity—distortion of the supply waveform becomes a live concern. Brazil governs power quality through PRODIST Módulo 8; Colombia references the IEEE 519 and IEC 61000 standards through its RETIE technical framework. Holding distortion within those limits, and protecting sensitive equipment from it, increasingly calls for active filtering rather than a one-off survey.

Section 05

Three forces are sharpening the conventional savings case across both markets, even as resilience carries the headline.

Rising, biting tariffs. Colombian commercial rates have risen sharply since 2023, reaching roughly $0.13–0.16/kWh and climbing toward $0.23 once taxes are included—higher still on the Caribbean coast. Brazil’s industrial rate, near US$0.19/kWh, is already among the steeper in the region, and the scarcity surcharge lifts it further in dry years. On bills at these levels, the energy a site wastes is expensive, and the efficiency case stands on its own.

Metered reactive-power penalties. The reactive charge is the most direct lever of all, because it is recoverable in full. In Brazil, correcting power factor above the 0.92 floor removes the energia reativa excedente line item outright. In Colombia, bringing a load within the allowed reactive band removes the equivalent CREG charge. Either way, the saving is independent of the energy rate and lands every month.

Capacity for growth. In the fast-building corridors—the São Paulo data-centre cluster, the manufacturing and retail expansion around both countries’ major cities—the binding constraint is often transformer and switchgear headroom, not the energy bill. Correcting power factor and cleaning harmonics typically frees 15–20% of capacity on an existing connection, letting a growing site add load without waiting on a grid upgrade.

Section 06

For an industrial operator in Brazil or Colombia, the order in which power quality pays back is distinct. The reactive-penalty removal and the energy savings on already-biting tariffs lead, because they are recoverable and they land every month. Genuine resilience—riding through the sags and brownouts a hydro-stressed or coastal grid produces—is a strong second, decisive for the cold chain and for any site on the Caribbean coast. Capacity release runs alongside. A solution built for the region has to reflect that order.

HarmoniQ installs a coordinated, solid-state system at the low-voltage switchboard, as a parallel, removable retrofit—sized to the site and commissioned without breaking circuits or stopping production. Three products are deployed as the site requires. The HarmoniQ Booster corrects power factor in real time, removing the ANEEL reactive charge above the 0.92 floor in Brazil and the equivalent CREG charge in Colombia, while freeing transformer capacity for growth. HarmoniQ Alpha holds voltage steady through the sags, swings, and brownouts of a hydro-stressed or coastal supply, protecting motors, drives, refrigeration, and process equipment—the component that matters most for the cold chain and the Caribbean coast. The HarmoniQ Filter (HPF) holds harmonics within PRODIST Módulo 8, IEEE 519, and IEC 61000 limits—increasingly necessary as variable-speed drives and inverter-based equipment multiply.

Every installation is held to the same standard HarmoniQ applies worldwide: a minimum performance guarantee, with results proven at the customer’s own meter and switchable on and off so the difference can be confirmed in metered results in real time. Where a reactive charge is a number on the invoice and a sag can spoil a shipment, measurement is the only credible currency.

Latin America’s industrial power problem will not be solved by a single good rainy season. The structural realities—a regulated reactive-power floor that is billed every month, and grids whose price and reliability move with the rains—are durable. What an individual operator can control is how efficiently and how cleanly its own site runs, and how well it holds steady when the grid does not. In a region where the penalty is written into the tariff and the drought is priced into the bill, that is not an efficiency footnote. It is revenue protected at the meter.

References

1. ANEEL (Agência Nacional de Energia Elétrica, Brazil), Resolução Normativa nº 1000/2021, including the power-factor obligation (0.92) and the billing of excess reactive energy (energia reativa excedente).
2. ANEEL, bandeira tarifária (tariff-flag) framework and monthly scarcity-surcharge determinations, 2025–2026.
3. PRODIST Módulo 8 (Qualidade da Energia Elétrica), ANEEL distribution procedures for power quality.
4. CREG (Comisión de Regulación de Energía y Gas, Colombia), rules on the billing of excess reactive energy; XM, dispatch and wholesale-market operation. Verify current thresholds and rates with the distributor.
5. International Energy Agency, country profiles for Brazil and Colombia, IEA, Paris, 2025; generation-mix and hydropower shares.
6. Reporting on the 2024 El Niño drought in Colombia: reservoir levels, the proximity to rationing, and the halt of exports to Ecuador.
7. RETIE (Reglamento Técnico de Instalaciones Eléctricas, Colombia), referencing the IEEE 519 and IEC 61000 power-quality standards.
8. IEEE 519, “Recommended Practice and Requirements for Harmonic Control in Electric Power Systems,” and the IEC 61000 series, “Electromagnetic compatibility (EMC).”

Figures in this article are drawn from public regulatory and market sources and are indicative of conditions in 2025–2026; tariffs, reactive-power thresholds, scarcity surcharges, and hydrological conditions across Latin America change quickly. Verify any figure against the relevant regulator—ANEEL in Brazil, CREG in Colombia—before relying on it.