The Power Purchase Agreement (PPA) lengths for Solar PV energy in the UK have shown a gradual upward trend based on forecasts from 2024 to 2028. Starting at 24 years in 2024 and 2025, the PPA length increases to 25 years by 2026, maintaining until 2027, and reaching 26 years by 2028. This reflects a modest annual compound growth rate (CAGR) over the five-year period. In 2023, the PPA length stood at 23 years, indicating a steady enhancement in PPA durations initiated by growing market confidence and technological improvements.

Future trends to watch for include:

The impact of regulatory changes and incentives on PPA durations.
Technological advancements in solar PV efficiency potentially influencing contract lengths.
Market adoption of innovative financing models and risk assessments affecting PPAs.