MEP Engineering

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If you have ever looked at a Kenya Power bill and wondered why the amount changes so
sharply from one month to the next — or why two businesses in the same building pay very
different rates — this guide is for you. Kenya’s electricity billing system has several moving
parts: a base tariff set by the regulator, a handful of fixed levies, and a set of variable
surcharges that EPRA adjusts every month based on fuel prices and foreign exchange
movements. Understanding how these work together puts you in a much stronger position
to manage your energy costs, whether you run a commercial building, a manufacturing
facility, or a residential development.

How Electricity Is Priced in Kenya

Electricity pricing in Kenya is governed by the Energy and Petroleum Regulatory Authority
(EPRA), which replaced the former Energy Regulatory Commission (ERC). EPRA sets the
base tariff schedule, approves monthly surcharge adjustments, and publishes notices in the
Kenya Gazette each month detailing the variable charges applicable for that billing period.

The total cost on your bill is made up of three layers:

• Base Energy charge — a fixed rate per kWh set by EPRA, determined by your tariff category
• Demand Charge — applicable to commercial and industrial consumers, billed per kVA of peak demand
• Variable Surcharges — adjusted monthly and covering fuel costs, forex movements, inflation, and water resource levies

Each of these is explained in detail below.

Kenya Power Tariff Categories (2025/2026 Rates)

EPRA approved a revised tariff schedule effective July 2025, running through June 2026.
The table below reflects the current base energy charges before surcharges and VAT.

Note: Rates below are base energy charges only. Your final bill will include variable
monthly surcharges (FCC, FERFA, WRMA), VAT at 16%, and applicable fixed levies.
See the surcharges section below for a full breakdown.

Time-of-Use (TOU) billing is available to CI category consumers and applies to
consumption recorded during off-peak hours. For buildings and facilities that can shift
energy-intensive operations — such as chiller plants, pumping systems, or production
equipment — to off-peak periods, TOU billing can produce significant savings. This is one
area where an experienced MEP engineer can add immediate value through load
scheduling and BMS programming.

The cost of electricity in Kenya significantly affects utility services in Kenya. The high cost of electricity limits the availability and affordability of essential utility services in Kenya, such as water supply, telecommunications, and manufacturing. This presents a challenge for the development and accessibility of utility services in Kenya.

Surcharges on Your Bill Explained

Beyond the base tariff, every Kenya Power bill includes a set of fixed and variable
surcharges. The variable ones — FCC, FERFA, and WRMA — change every month and are
published by EPRA in the Kenya Gazette. As of late 2025, these surcharges have added
between Ksh 4.78 and Ksh 5.24 per kWh on top of the base rate, making them a significant
portion of the total bill.

Estimated Total Cost per kWh by Tariff Category

The tables below show what consumers in each tariff category can expect to pay per kWh in
total once all surcharges, levies, and VAT are applied. These are estimates based on
December 2025 EPRA gazette rates — the most recent figures available at the time of
publication.

How these estimates are calculated: Base rate + Fuel Cost Charge (Ksh 3.42/kWh) +
Foreign Exchange Adjustment (approx. Ksh 0.86/kWh) + Inflation Adjustment (approx.
Ksh 0.50/kWh) + WRMA Levy (Ksh 0.013/kWh) + ERC Levy (Ksh 0.03/kWh) + REP
Levy (5% of base rate) + VAT at 16% on base and fuel charges. Demand charges for CI
consumers are billed separately per kVA and are not included in the per-kWh figures
below.

The gap between base rate and total cost is significant — for a typical domestic consumer
on DC1, surcharges and VAT add over Ksh 8.82 to every kWh consumed. For commercial
consumers on CI1, the effective cost per kWh is nearly 60% higher than the base rate before
demand charges are even factored in. This is why energy-efficient building design —
particularly HVAC sizing and power factor correction — has such a direct impact on
operating costs.

Monthly variation: The FCC, FERFA, and WRMA surcharges change every month. In
October 2025, total variable surcharges reached Ksh 5.24/kWh — higher than the
December 2025 figures used above. Check the EPRA Kenya Gazette notice for the
current month’s rates.

What This Means for Commercial Building Owners and Developers

For residential households, electricity tariffs are a personal expense. For commercial
building owners, developers, and contractors, they are an operational cost that runs for the
lifetime of the building — and one that a well-designed MEP system can significantly
reduce

Several things determine how much a commercial building pays for electricity, and most of
them are engineering decisions made before a single cable is pulled:

• Load sizing and distribution. An oversized electrical installation draws more peak demand than the building actually needs, pushing up demand charges month after month. A properly sized electrical design, calculated by a qualified electrical engineer, eliminates unnecessary peak demand and keeps the CI tariff demand charge as low as possible.
• Power factor correction. The power factor surcharge is applied when a building’s power factor drops below 0.9 — a common occurrence in buildings with large inductive loads such as motors, lifts, and air conditioning compressors. Installing power factor correction capacitors, specified as part of an MEP electrical design, removes this surcharge entirely.
• HVAC system efficiency. Air conditioning is typically the single largest electricity consumer in a commercial building in Kenya. An HVAC system that has been properly sized through thermal load calculations, and specified with inverter-driven equipment, can reduce electricity consumption by 20–30% compared to a system that was sized by a contractor without engineering input. On a CI1 tariff at Ksh 13.74/kWh plus surcharges, that difference adds up to millions of shillings over a building’s lifetime.
• Time-of-Use optimization. CI category consumers can access TOU billing, where off-peak consumption is charged at roughly half the standard rate. A Building Management System (BMS), specified as part of an MEP design, can automate load-shifting to off-peak hours — running chiller pre-cooling, water heating, and other deferrable loads at night when rates are lower.

At Reigai Solutions, our electrical and mechanical engineering services are designed with
your long-term operating costs in mind, not just the construction budget. If you are
planning a new development or reviewing the performance of an existing building, we are
available for a free initial consultation.