BEYOND THE GRID: HOW THE GHANA WHOLESALE ELECTRICITY MARKET (GWEM) CAN ANCHOR GHANA'S BREAK FROM FOSSIL FUEL DEPENDENCE
Ghana’s energy future is already being designed. At COP28 in Dubai in December 2023, the country launched its National Electric Vehicle Policy, outlining a bold transition: a preparatory phase through 2026, a scale-up phase targeting 35% EV penetration by 2035, and a transformative phase by 2045 where no new petrol or diesel vehicles will be sold or imported (Ministry of Transport of Ghana, 2023). Incentives are in motion, including eight-year import duty exemptions for electric vehicles in public transport and for registered EV assembly companies. Charging infrastructure is gradually emerging across Accra, with fast-charging stations appearing in key commercial areas.
This transition signals more than a shift in transport. It represents a structural transformation of Ghana’s energy demand. An electric vehicle fleet at scale will require a reliable, flexible, and clean electricity system. By 2030, EV adoption could significantly increase electricity demand, placing additional pressure on an already strained grid. Yet, if properly managed through smart charging systems and time-of-use pricing, EVs could become a strategic asset and absorb excess solar generation during the day and support grid stability at night.
GWEM policy is framed as a platform for electricity trading. In reality, it is the backbone of Ghana’s clean energy transition. A transparent, competitive wholesale market provides the pricing signals necessary to coordinate supply and demand efficiently. Without it, the country cannot fully integrate renewable energy at scale or optimize emerging demand from electric mobility. With it, Ghana can align its power and transport sectors into a unified decarbonization pathway.
However, this future must contend with present realities. Two crises are quietly compounding each other in Ghana’s energy landscape. The first is highly visible: a power sector heavily dependent on imported fuels. Approximately 66% of electricity generation is tied to thermal plants, fueled by natural gas and liquid fuels (Ghana Energy Statistics, 2025). Gas is sourced domestically from Jubilee, TEN, and Sankofa fields or imported via the West Africa Gas Pipeline, often subject to supply disruptions and payment arrears. When gas supply is constrained, utilities resort to heavy fuel oil and distillate at significantly higher costs. Because these fuels are priced in US dollars, every depreciation of the Ghanaian cedi translates directly into higher generation costs. A costs that either burden consumers through tariffs or accumulate as sector debt when tariffs are artificially low.
The second crisis is less discussed but equally critical: a transport system dominated by fossil fuels. With over 3.2 million registered vehicles running almost entirely on petrol and diesel, the sector contributes about 17% of Ghana’s greenhouse gas emissions (NDC Action Project, 2024) while exposing the economy to volatile global oil prices. Together, these two sectors reinforce Ghana’s dependence on imported energy and amplify macroeconomic vulnerability. At the same time, the country’s renewable energy potential remains largely underutilized. Ghana enjoys daily solar radiation levels of 4 to 6 kWh per square meter and between 1,800 and 3,000 sunshine hours annually, among the highest in West Africa (IPPG Africa, 2025). Yet renewable energy, excluding large hydro, accounts for only about 4.2% of installed capacity. The contrast is stark: a nation rich in solar resources continues to rely on imported fuels for power generation.
Compounding this inefficiency are significant system losses. The Electricity Company of Ghana records aggregate technical, commercial, and collection losses exceeding 25% (Ghana Energy Statistics,2025), meaning more than a quarter of generated electricity fails to generate revenue. In such a system, using expensive imported fuels to produce electricity that is subsequently lost or unbilled is not just inefficient, but it is fiscally unsustainable.
This is precisely the structural problem GWEM is designed to address. By introducing competition and transparent pricing, GWEM creates incentives for efficiency across the value chain. More importantly, it shifts investment toward the lowest-cost sources of generation. In today’s global energy landscape, where the cost of solar photovoltaic technology has fallen dramatically, competitive markets naturally favor renewables over thermal generation. This transition does not rely solely on policy mandates; it is driven by economics.
Ghana’s energy policy framework already reflects this ambition. The Renewable Energy Act (Act 832) and its amendment provide legislative support for clean energy expansion. The government targets 10% renewable energy in the generation mix by 2030, with longer-term ambitions reaching up to 70%. Key projects; including a 400 MW wind farm in the Accra Plains, floating solar installations on the Bui reservoir, and large-scale solar parks in the Northern Savannah paired with battery storage; signal the beginning of a serious renewable energy pipeline, (Ministry of Energy and Green Transition (MoEnGT), 2025; The vaultznews, 2025).
However, these projects require more than policy backing. They need a market structure that allows their output to compete fairly. Without GWEM, renewable generators risk being sidelined by legacy bilateral contracts and cost-plus arrangements that favor incumbent thermal plants. With GWEM, renewable energy can compete on price and efficiency, accelerating its integration into the national grid.
The performance of the Ghana Wholesale Electricity Market (WEM) between 2020 and 2024 demonstrates a clear trajectory toward the transparency and grid efficiency required for large-scale integration of electric vehicles (EVs). A notable success is the significant reduction in transmission system losses, which reached a low of 4.1% in 2022 following strategic grid reinforcements. This technical stability is further supported by the 2024 approval of formal Market Rules, a critical phase that shifts Ghana toward a more accountable and competitive trading platform. Moreover, while the system still relies heavily on natural gas, which accounted for 97.7% of thermal fuel consumption by 2022, it is increasingly recognised as a cleaner, domestic "bridge" fuel that provides the reliable base load required to manage the flexible demand of an emerging EV fleet. These structural improvements and the formalisation of the Wholesale Electricity Market provide the essential infrastructure to anchor Ghana's transition from fossil fuel dependence to a low-carbon economy (Electricity Market Oversight Panel [EMOP], 2024)
Ultimately, GWEM connects the entire transition story. It links clean power generation to electric mobility. It transforms EVs from a potential grid burden into a flexible demand resource. It reduces dependence on imported fuels, stabilises electricity costs, and strengthens Ghana’s macroeconomic resilience. Most importantly, it positions Ghana not as a passive consumer of global energy markets, but as an emerging clean energy hub in West Africa.
Ghana’s Wholesale Electricity Market is, therefore, far more than a trading platform. It is the infrastructure upon which a low-carbon, economically resilient future must be built. Policymakers cannot afford to treat it as anything less.
