Power Purchase Agreements (PPAs) are the invisible engines driving Kenya’s electricity sector, yet they remain one of the most misunderstood aspects of the energy landscape. Industry experts argue that these complex contracts are the central nervous system, determining how electricity is priced, delivered, and sustained for millions of consumers and critical industries, including water and infrastructure.
To demystify these essential documents, Patricia Wairimu Mbugua, a financial analyst at the Kenya Electricity Generating Company (KenGen), recently shared her expertise on the Energy Post Podcast. She peeled back the layers of PPAs, explaining their profound impact on everything from household bills to the stability of water pumping stations.
What is a Power Purchase Agreement?
At its core, Mbugua explained that a PPA is fundamentally a structured contract. It is, as she noted, “a contract between a buyer and a seller, with predetermined terms guiding pricing, operations, and duration.”
In the Kenyan context, the buyer is typically the monopoly distributor, Kenya Power and Lighting Company (KPLC), while the seller is a power generator, such as the state-owned KenGen or independent private producers.
How Power Purchase Agreements in Kenya Work
While the definition sounds simple, the reality is far more layered. Mbugua emphasized that PPAs are a delicate ecosystem involving multiple stakeholders. Beyond the buyer and seller, regulators and financiers wield significant influence over the final shape of any agreement.
She pointed out that the Energy and Petroleum Regulatory Authority (EPRA) must approve every single PPA before it can be implemented. Financiers, meanwhile, scrutinize these agreements to ensure they guarantee the long-term revenue stability required to recoup the massive capital investments in power plants. Mbugua stressed that PPAs are not just operational contracts; they are financial frameworks that determine whether an energy project can secure funding and move from blueprint to reality.
1. Capacity vs. Energy: The Core of Electricity Pricing
Mbugua explained that PPAs in Kenya are broadly structured into two categories, which form the bedrock of electricity pricing:
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Capacity-Based PPAs: These agreements compensate generators simply for being available. Even if the grid does not require the electricity at a given moment, the plant must recover fixed costs like staff salaries, maintenance, and loan repayments. This ensures power plants remain in a state of readiness, guaranteeing grid stability when demand spikes.
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Energy-Based PPAs: In contrast, these agreements compensate generators strictly based on the actual electricity delivered to the grid. Payments are tied directly to output—if the plant doesn’t run, it doesn’t get paid.
2. Dispatchable vs. Non-Dispatchable Power
The structure of a PPA hinges on how reliable the power source is. Mbugua clarified that dispatchable sources, such as geothermal, hydro, and gas, can be turned on or off to meet demand. Non-dispatchable sources, like solar and wind, are intermittent and depend entirely on weather conditions.
This distinction leads to a critical outcome:
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Dispatchable plants are typically paid for their availability (capacity).
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Variable renewable energy sources are typically paid for their output (energy).
Mbugua optimistically noted that advances in battery storage technology could, in the future, make renewable sources more dispatchable, potentially shifting how their PPAs are structured.
3. Take-or-Pay vs. Take-and-Pay: Why It Matters
These two major pricing models are at the heart of who bears the risk in Kenya’s electricity sector:
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Take-or-Pay: In this model, consumers pay for the availability of electricity whether they consume it or not. Mbugua explained that this shifts the demand risk away from the generator and onto the buyer (KPLC and, ultimately, the consumer).
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Take-and-Pay: This model is more consumer-friendly in theory, as it only requires payment for electricity that is actually consumed. However, Mbugua cautioned that shifting the demand risk to the generator introduces uncertainty for them, a risk that must then be priced into the tariff.
Mbugua emphasized that achieving the right balance between these two models is the critical balancing act for ensuring cost stability in the long run.
Breaking Down Your Electricity Bill
Mbugua shed light on why Kenyan electricity bills contain so many different charges, noting that many of these components are often misunderstood.
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Fuel Cost: She clarified that fuel costs are not a source of profit for generators. They are treated as a “pass-through cost,” meaning consumers only pay the exact amount for the fuel actually used to generate power.
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Forex Adjustment: This charge reflects the reality of currency fluctuations affecting loans taken in foreign currencies to build the power plants.
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Water Charges: For hydropower, fees paid to authorities like the Water Resources Authority (WARMA) are passed through to consumers to account for water usage.
She emphasized that these components are designed to ensure complete transparency and accurate cost recovery, preventing generators from absorbing unpredictable financial shocks.
What Prevents Unfair Pricing?
Addressing public concerns about pricing manipulation, Mbugua outlined the key safeguards built into the system.
She explained that regulatory oversight by EPRA is the first line of defense, with the authority able to reject or demand revisions to proposed tariffs. Furthermore, PPAs are not a free pass; they include performance-based penalties. If a power plant fails to meet its agreed-upon availability targets, its payments are automatically reduced. These mechanisms, she stated, ensure that consumers are not forced to pay for inefficiencies or poor performance.
Why Power Purchase Agreements in Kenya Matter
Mbugua stressed that PPAs have a direct and lasting impact on every single electricity consumer in Kenya.
“The way PPAs are structured today determines the reliability and affordability of electricity in the future,” she stated. Poorly structured agreements can lock consumers into decades of high tariffs or result in an unreliable supply that hampers development. Conversely, well-balanced PPAs attract vital investment while protecting consumer interests.
Common Misconception About PPAs
Mbugua tackled a common myth: that PPAs guarantee profits for generators. She explained that profitability is never guaranteed; it depends entirely on operational performance. Even a financially sound PPA cannot prevent losses if a power plant fails to meet its operational targets due to technical faults or mismanagement.
Applications in Water and Industrial Infrastructure
For an audience focused on water and industry, Mbugua’s insights are particularly resonant. She emphasized that reliable electricity, underpinned by well-structured PPAs, is essential for:
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Continuous water pumping operations that keep cities and farms supplied.
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Efficient wastewater treatment systems that protect public health.
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Stable industrial production processes that drive economic growth.
Unreliable power supply, she warned, drives up operational costs and introduces significant risks across these critical sectors.
Why It Matters for Africa’s Energy Future
Zooming out, Mbugua positioned PPAs as the backbone of energy project financing across the entire African continent. These agreements are the primary tool investors use to de-risk their capital. A well-structured PPA enables a utility to deliver reliable electricity while maintaining its own financial sustainability, creating a virtuous cycle of investment and development.
Expert Insight
Mbugua concluded with a powerful call for greater public awareness. She urged Kenyans to take a keen interest in the mechanics of PPAs, noting that these complex contracts are not just abstract financial tools but are the very documents that will shape the country’s electricity costs and supply reliability for generations to come.
Call to Action
Do you think Kenya has struck the right balance between affordability and reliability in its Power Purchase Agreements?
Share your thoughts and join the conversation shaping Africa’s energy future.
