How long does utility-scale solar park construction take?
Utility-scale solar park construction (10 MW and above) typically takes 6–12 months from contract signing to grid connection, depending mainly on component lead times and permitting.
Phases and their typical duration
Detailed engineering and permitting normally takes 2–4 months. This includes geotechnical study, grid connection design, construction project documentation and obtaining required permits.
Component procurement takes 2–6 months depending on global supply conditions. Panels and inverters often come from Asia and Europe in parallel. Lead times have been more volatile in recent years.
Physical construction of a 10 MW park takes 2–4 months — foundations, mounting structures, panels, DC cabling, inverter installation and substation connection. For a 100 MW park, the active installation period can stretch to 6–8 months, often with parallel crews.
Testing, grid connection and commissioning take 2–6 weeks depending on the grid operator's schedule.
Main causes of delay
Component supply delays have been the most frequent cause in recent years. A strong EPC partner manages supply risk through multiple suppliers and inventory.
Extended permitting, persistent bad weather and grid interconnection slippage are the next main risks. A realistic schedule and clear communication with the local grid operator reduce these substantially.