The renewable energy bond stack
Renewable energy projects move through distinct bonding milestones — and each one carries its own underwriting profile, legal triggers, and capital implications. From the moment a developer enters the FERC interconnection queue to the day a project reaches end-of-life decommissioning, surety bonds replace cash and letters of credit at virtually every stage. Used correctly, they preserve working capital, satisfy lenders and offtakers, and unlock contract opportunities that would otherwise require collateralized security.
We underwrite the complete renewable energy bond stack for utility-scale solar (10 MW to 500 MW+), commercial and industrial solar, onshore and offshore wind, hydroelectric facilities, and battery energy storage systems (BESS). We work directly with developers, EPC contractors, equipment suppliers, and project finance teams. Response within one hour, seven days a week, ten to seven Atlantic.
The essential point: surety is not a substitute for cash — it is a substitute for cash that also carries a solvent guarantor's balance sheet. A one-hundred-million-dollar interconnection deposit tied up as cash for four years is capital the developer cannot deploy. The same obligation posted as a surety bond costs a fraction of that capital and preserves the developer's ability to advance parallel projects.
Five renewable energy bonds, one underwriting team
Most renewable energy projects require a combination of these five bond types over their operational lifetime. We write all five and coordinate them so coverage transitions smoothly from one phase to the next.
EPC Performance Bonds
Guarantees the engineering, procurement, and construction contractor will complete the project on time, on budget, and to specification. Required by virtually every project lender on utility-scale solar and wind builds. Typically 100% of EPC contract value.
Decommissioning Bonds
Guarantees site restoration at the end of the project's useful life: removal of panels, turbines, foundations, and underground cabling. Mandated by 28 states and the Bureau of Land Management on federal land. Typical range $10K to $103K per MW.
Interconnection Bonds
Secures the developer's financial obligations under FERC's Large Generator Interconnection Agreement (LGIA) and ISO/RTO equivalents. FERC Order 2023-A now expressly accepts surety bonds in lieu of cash and letters of credit.
PPA Bonds
Credit support for developers and offtakers under long-term power purchase agreements — a proven alternative to parent guarantees and standby letters of credit. Used by Equinix, Iron Mountain, and other major corporate offtakers.
Procurement Bonds
Secures purchase orders for major renewable equipment — solar panels, wind turbines, inverters, batteries — without tying up developer liquidity in supplier deposits. Manufactured globally, financed locally. Typical range 10% to 25% of equipment value.
Need something else?
Bid bonds, payment bonds, supply bonds, maintenance bonds, advance payment bonds, right-of-way bonds, environmental closure bonds, and community solar subscription manager bonds — we write the entire renewable energy stack. Just ask.
Practitioner's note: the five bonds above are not standalone products — they are stages of a single relationship. A developer that enters the queue behind an interconnection bond, moves to procurement and EPC construction bonds during the build, layers in a PPA bond as offtake is contracted, and closes the loop with a decommissioning bond twenty-five years later is running a single surety program with five distinct triggers. Coordinating that program under one underwriting team compounds capacity, keeps indemnity clean, and prevents the mid-project surety scramble that kills otherwise-good projects.
EPC performance bonds
The EPC performance bond is the cornerstone bond of every utility-scale renewable energy build. Structurally, it is a standard three-party performance bond: the EPC contractor is the principal, the project owner or lender is the obligee, and a T-listed surety company is the guarantor. If the EPC contractor defaults during construction — through bankruptcy, abandonment, or failure to perform — the surety is contractually obligated to either arrange for project completion through a substitute contractor or compensate the project owner for the loss, up to the penal sum.
In renewable energy practice, the EPC bond is almost always a combined performance and payment bond. The performance component guarantees project completion; the payment component guarantees that subcontractors, equipment suppliers, and labor are paid throughout the build. Both are typically written together by the same surety as a single package at 100% of contract value.
Solar: A utility-scale solar EPC contract typically covers module supply and installation, tracker system installation, DC/AC electrical work, medium-voltage collection, substation construction, and interconnection. Modern utility-scale solar EPC contracts commonly range from $50 million to over $500 million, with 12–18 month construction schedules.
Wind: Wind farm EPC contracts cover turbine erection, foundations, access roads, collection systems, and O&M facilities. Utility-scale onshore wind EPC contracts commonly range from $100 million to over $1 billion. Offshore wind is a distinct underwriting profile with substantially higher penal sums and longer construction periods.
Hydro and BESS: Small hydro and pumped storage carry conventional civil-construction underwriting characteristics with the added complexity of environmental permitting. Battery energy storage systems are now bonded on the same framework as generation under FERC Order No. 845 and subsequent rulings.
Complete EPC performance bond guide →
Decommissioning bonds
A decommissioning bond, also called a reclamation bond or site restoration bond, guarantees the proper removal of a solar farm, wind park, or hydroelectric facility at the end of its operational life — and the restoration of the underlying land to its pre-construction condition. The bond protects landowners, county governments, state agencies, and the federal government from being left with the cost of dismantling abandoned renewable energy infrastructure.
Twenty-eight U.S. states now have statutory or administrative rules requiring decommissioning security for utility-scale solar, wind, or both — up from only nine a decade ago. The federal Bureau of Land Management requires decommissioning bonds at $10,000 per acre for solar facilities and $10,000 to $20,000 per turbine for wind facilities on federal land. Local county ordinances and private land leases commonly mandate them as well. Virginia and Kansas require the bond before construction begins; others phase it in twelve to sixteen years into operation.
Typical penal sums range from $10,000 to $103,000 per megawatt of installed capacity. Decommissioning bonds are almost universally annual bonds subject to periodic reassessment of the reclamation cost estimate — usually every five to ten years, adjusted for inflation and technology changes. Surety bonds are dramatically more capital-efficient than cash escrow or letters of credit, which is why sophisticated developers have moved decisively to surety solutions for this class over the last decade.
Complete decommissioning bond guide →
FERC interconnection bonds
The most significant recent development in renewable energy bonding is the Federal Energy Regulatory Commission's Order No. 2023-A, issued in March 2024. Before that order, interconnection customers were generally limited to cash deposits or irrevocable letters of credit as forms of financial security for commercial readiness deposits and network upgrade study deposits. Both options tied up significant developer capital — often seven figures for a single 138-kV tie-in to the bulk transmission system — for the entire duration of the interconnection study and construction process.
Order 2023-A now expressly accepts surety bonds as a permitted form of financial security. The change applies across MISO, PJM, CAISO, SPP, NYISO, ISO-NE, and directly-interconnected utility territories. For an active developer with a dozen projects moving through interconnection queues simultaneously, the cash-preservation implications are material — enough to fund an entire additional development pipeline in some cases.
Complete interconnection bond guide, including FERC Order 2023-A and ISO/RTO variations →
Power purchase agreement bonds
Power purchase agreements are bilateral contracts in which an offtaker — typically a utility, corporate buyer, or municipal entity — commits to purchase electricity from a renewable energy generator at a defined price over a period of ten to twenty years. The contract creates a long-term financial obligation that lenders, developers, and offtakers all need to secure with credit support.
Historically that credit support has come from parent guarantees or standby letters of credit. Surety bonds are now an established third option, particularly for sub-investment grade offtakers and SPV developers that lack a parent with sufficient credit standing. Equinix and Iron Mountain were among the first major corporate energy buyers to use surety bonds for PPA credit support — a structure that has since been widely adopted across the corporate PPA market.
Procurement bonds
Renewable energy procurement bonds secure a developer's or contractor's purchase order obligations to equipment manufacturers — typically the producers of wind turbines, solar panels, inverters, transformers, and battery energy storage systems. They function as financial security for advance deposits, milestone payments, and supply commitments under equipment supply agreements.
The bond replaces what would otherwise be cash deposits or standby letters of credit posted to the manufacturer. For a developer building a 200 MW solar farm, that can mean tens of millions of dollars freed up from supplier deposits and made available for working capital, project finance bridge funding, or parallel project development. Bond sizes typically range from 10% to 25% of equipment order value.
Complete procurement bond guide →
Also needed by most GCs
Contractor license & permit bonds — all 50 states
Every general contractor working across state lines needs multiple L&P bonds. Surety One writes contractor license bonds, municipal permit bonds and combined license/performance bonds nationwide.
Built for the renewable energy lifecycle
Most surety agencies treat renewable energy as a one-off transaction. We treat it as a multi-decade relationship that mirrors the operational life of the asset itself.
- One-hour response. Project finance schedules don't wait. Our underwriters respond within the hour during operating hours (7 days · 10 a.m.–7 p.m. ATL) and routinely accommodate closing timelines.
- Nationwide coverage. All 50 states, Puerto Rico, and the U.S. Virgin Islands. Federal lands (BLM, USFS), state agencies, county governments, and private offtakers — we know the obligees.
- Complete stack. One underwriting team handles interconnection, procurement, EPC construction, PPA credit support, and decommissioning under a single indemnity relationship.
- SPV-friendly. We underwrite special-purpose entities on the strength of sponsor and parent indemnity. Sub-investment grade offtakers are placed regularly.
- T-listed, A-rated carriers. Our carrier panel is entirely U.S. Treasury Circular 570 listed and A.M. Best A-rated or better. Bonds are acceptable to federal agencies and institutional lenders without additional inquiry.
- Uncollateralized where possible. On strong sponsor accounts, we write the full stack without collateral. On weaker credit, we structure minimum collateral rather than defaulting to 100% cash.
Underwriting a renewable energy account
New-account underwriting proceeds on the same framework we apply to conventional contract surety, adapted for the distinctive risk profile of renewable energy development. Key elements the underwriter will assess:
- Sponsor and developer track record — completed MW, geographic footprint, project types, and any prior defaults or workouts.
- Project finance structure — construction lender identity, tax equity provider, term debt, and the maturity profile of the debt stack.
- EPC contractor and equipment supplier bench — the standing of the specific EPC and OEMs on the account.
- Offtake economics — PPA terms, hedge structures, merchant tail assumptions, and revenue certainty.
- Land control and permitting status — for utility-scale projects, the depth of land control and status of interconnection and environmental permitting.
- Balance sheet of the indemnitor — SPV, sponsor, or fund-level indemnity as applicable to the deal structure.
For established developer accounts, most subsequent bonds within the approved program are turned within hours of specific-project submission. New accounts typically take two to five business days depending on file completeness.
Frequently asked questions
What surety bonds do renewable energy projects require?
Renewable energy projects typically require five primary bond types over their operational lifetime: EPC performance bonds (guaranteeing construction completion), decommissioning bonds (guaranteeing site restoration at end of life), interconnection bonds (securing grid connection upgrade obligations), power purchase agreement bonds (credit support for long-term offtake obligations), and procurement bonds (securing equipment supply orders for turbines, panels, and batteries). Not every project requires all five, but most utility-scale projects require at least three.
Are surety bonds accepted by FERC for interconnection deposits?
Yes. FERC Order No. 2023-A, issued in March 2024, expressly accepts surety bonds as a form of financial security for commercial readiness deposits and study deposits in the generator interconnection process, alongside cash and irrevocable letters of credit. The change applies across all major ISOs and RTOs including MISO, PJM, CAISO, SPP, NYISO, and ISO-NE.
How much does a renewable energy surety bond cost?
Premium rates typically range from 1% to 3% of the bond amount for financially strong applicants on contract bonds (EPC performance, payment, maintenance) and from 0.5% to 2% on commercial-class bonds such as decommissioning and interconnection. Rates depend on project size, principal financial strength, obligation duration, and required collateral. Application review is complimentary and carries no obligation.
Which renewable energy projects require decommissioning bonds?
Twenty-eight U.S. states now have statutory or administrative rules requiring decommissioning security for utility-scale solar, wind, or both. The federal Bureau of Land Management requires decommissioning bonds at $10,000 per acre for solar facilities and $10,000–$20,000 per turbine for wind facilities on federal land. Local county ordinances and private land leases also commonly mandate them. Some states — notably Virginia and Kansas — require the bond before construction begins; others phase it in twelve to sixteen years into operation.
Can you bond an SPV or special purpose entity?
Yes. Project SPVs typically have no operating history and no real assets, so we underwrite based on indemnity from the parent or sponsor entity. We can structure full or limited indemnity arrangements depending on the deal — and we have experience working with private equity sponsors, IPP developers, and corporate energy buyers. Sub-investment grade offtakers can generally be placed.
Do you write bonds for battery energy storage (BESS) projects?
Yes. Battery storage is now treated as a generating facility under FERC Order No. 845 and subsequent rulings, which means standalone BESS projects and hybrid solar-plus-storage projects use the same bonding framework as conventional generation. We write performance bonds for BESS construction, procurement bonds for battery equipment supply, and interconnection bonds for grid-tied storage facilities.
How quickly can you issue a renewable energy bond?
For straightforward small commercial bonds under $250,000, we typically issue same day. For utility-scale contract bonds and complex commercial obligations, the timeline depends on how quickly we receive complete financial documentation. Once we have everything we need, we typically have terms within twenty-four to forty-eight hours and the executed bond within a few business days. For urgent project finance closings, we routinely accelerate.
What jurisdictions do you cover?
All fifty U.S. states, Puerto Rico, and the U.S. Virgin Islands. Our carrier panel is T-listed for federal work (BLM, USFS, DOE, DOD renewable projects). Spanish-language underwriting is available directly through our San Juan office for Puerto Rico and Latin American work.