White Paper: Solving the Pain of Decommissioning Bank Guarantees

Executive Summary

Decommissioning obligations at the end of solar and battery project lifecycles create a significant and long-standing pain point for developers. Traditionally, these obligations have been secured through long-term bank guarantees, which lock up capital, increase financing costs, and complicate project sales. With Basel IV making long-dated guarantees even more capital-intensive for banks, the problem is becoming more severe. This white paper explores how Telios Land Partners can provide a more efficient, land-backed solution to address this challenge.


1. The Developer Challenge

Developers are required to guarantee the removal of equipment and restoration of land at the end of a project’s 25–30 year lifespan. Current practice relies on bank guarantees, which present several challenges:

  • Locked Capital – Guarantees tie up capital for decades, reducing developers’ balance sheet flexibility.

  • High Cost – Banks charge ongoing fees that accumulate significantly over time.

  • Complex Exits – Project buyers demand clarity on decommissioning, and guarantees often add friction in due diligence and transfers.


2. The Regulatory Backdrop

Under Basel IV, long-dated guarantees are treated as high-risk, illiquid exposures for banks. This results in:

  • Higher capital requirements for banks, increasing costs for developers.

  • Reduced bank appetite for issuing such guarantees.

  • Greater pressure on developers to find alternative, bankable solutions.


3. The Telios Solution

Telios’ land-backed financing model allows decommissioning obligations to be addressed within the lease structure itself, removing the need for traditional bank guarantees.

Key features:

  • Embedded Decommissioning Reserve – A small CPI-linked addition to annual lease payments funds a dedicated reserve over time.

  • No Separate Bank Guarantee – Developers avoid decades of locked capital and high guarantee fees.

  • Bankable Structure – The reserve is integrated into the SPV cashflow waterfall, transparent to lenders and acceptable for project finance.

  • Simplified Exits – Buyers see a standardized, predictable solution for decommissioning risk, enhancing the attractiveness of portfolios.


4. Benefits to Developers

  1. Lower Cost – Avoids costly bank guarantee fees that compound over decades.

  2. Freed Balance Sheet – Developers retain capital for growth instead of locking it up in guarantees.

  3. Faster Exits – A standardized lease-based approach simplifies due diligence for buyers.

  4. Investor Confidence – Provides a transparent, bankable solution aligned with project finance requirements.


5. Conclusion

Decommissioning obligations will remain a core requirement of solar and battery projects, but traditional bank guarantees are becoming more expensive and less available under Basel IV. Telios Land Partners provides a forward-looking solution: embedding decommissioning costs into a land-backed lease structure. This approach not only relieves developers of a major long-term burden but also improves project economics, accelerates timelines, and enhances bankability.


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