Dalia solar project is a planned ground-mounted photovoltaic (PV) plant to be built in the municipality of Tepeyahualco, in the state of Puebla, Mexico. Newly formed Comisión Nacional de Energía (CNE) granted a generation permit to the Dalia solar project in June 2025, authorizing a ground-mounted PV plant with up to 155.5 MW of alternating current capacity in Tepeyahualco. Once completed in December 2027, the plant will deliver around 476 GWh of renewable electricity annually into Mexico’s national grid.
Dalia Solar Project Gets Approval for US$100m Farm in Puebla, Mexico
Reported June 3, 2025 – Mexico’s newly formed energy regulator, the National Energy Commission (CNE), has approved a generation permit for Dalia Solar to construct a US$100 million (1.8 billion peso) solar farm in the state of Puebla. The 155-megawatt (MW) photovoltaic project is expected to bolster the country’s clean energy capacity and will feed electricity into Mexico’s wholesale power market upon completion.
The approval also marks one of the first major regulatory moves by the CNE, which began operations in June 2025. This followed President Claudia Sheinbaum’s sweeping energy sector reforms. The CNE replaces both the former Energy Regulatory Commission (CRE) and the National Hydrocarbons Commission (CNH). The new commission now consolidates oversight of electricity and hydrocarbons under a single entity within the energy ministry.
The Dalia Solar PV Park, as the project is known, was initially proposed in 2020 and underwent environmental evaluation by Mexico’s environment ministry. The park will be developed as a ground-mounted solar farm covering approximately 506.4 acres and equipped with over 433,000 photovoltaic modules.
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Completion Projected to be in 2027
Earlier projections anticipated construction of the Dalia Solar project would begin in 2022 and commercial operation would start in 2023. However, regulatory delays pushed back the timeline. Under the new permit, construction is now expected to conclude by December 2027.
Once operational, the solar farm will contribute to Mexico’s efforts to increase the share of renewable energy in its national energy mix. The project also aligns with the Sheinbaum administration’s goals to accelerate clean energy deployment. The administration also targets enhanced grid reliability and reduction of the country’s dependence on fossil fuels.
The Dalia Solar project will also provide local economic boost during construction and operation phases. This is expected to create jobs and infrastructure investment in Puebla. Mexico, being a region with high solar irradiance and growing energy needs, has also picked the interest of corporate players like Microsoft who will be constructing a solar portfolio worth 270 MW across the country and neighboring Brazil. This investment is also expected to contribute to the country’s economy.
Dalia Solar Farm Project Factsheet
Developer: Dalia Solar
Location: Puebla, Mexico
Capacity: 155MW
Investment: US$96-100 million (1.8 billion pesos)
Regulator: National Energy Commission (CNE), formed in June 2025
Commercial Operations Start: To be completed by December 2027
Technology: Ground-mounted PV system with 433,440 modules over 506.4 acres
Purpose: Electricity supply to Mexico’s wholesale power market
Background: Originally proposed in 2020; delayed due to regulatory reforms
