Solar PV Development

Overview

This is a working document, not a market report. It assumes you are trying to acquire, develop, finance, build or sell a utility-scale solar project in Spain or mainland Portugal.

Most solar publications tell you how many gigawatts Iberia installed, what irradiation looks like, or how large the pipeline could become. Those are useful context and poor sequencing advice. This guide tells you which evidence to obtain, in what order, which authority or counterparty controls it, what each document actually proves, and what happens when you commit capital before the evidence exists.

The single organising idea: solar development is about turning a site into rights. Sunshine is rarely the constraint. The real bottlenecks are land, grid, permits and financeable revenue. Spain and Portugal share the Iberian Electricity Market (MIBEL); their development rights do not — so the two regimes run side by side throughout, compared only where the comparison changes a decision.

What this guide covers

Twenty-five parts covering the full development sequence — the map of who does what, choosing your game, site selection, securing the land, securing the grid, permitting and politics, environment, landscape and archaeology, agrivoltaics, design and energy yield, offtake and revenue, the capital stack, procurement and EPC, construction to COD, signing the project, exit, life after COD, taxation and incentives, pitfalls, a worked example, a regional playbook, acquisition due diligence, development economics and valuation, PV + BESS, repowering and end of life, and investment committee and data room controls. Scope is utility-scale ground-mounted PV, agrivoltaics, hybridisation and selected PV+BESS interfaces, MIBEL merchant and PPA revenue, project finance, development-stage and operating M&A, construction, O&M, repowering and decommissioning in peninsular Spain and mainland Portugal; the Canary Islands, Balearic Islands, Azores and Madeira have separate system regimes and are out of scope. Closes with a tear-out field checklist and twelve appendices — including a site screening scorecard, grid and permit control sheets, a model input dictionary, an acquisition DD request list, an RTB/closing matrix and a country/regional status control sheet — that turn the framework into a transaction tool.

Who this is for

Developers, investors, lenders, EPCs and asset managers acquiring, developing, financing, building or selling utility-scale solar projects in Spain and mainland Portugal.

What you get

• Practical development guidance, not market sizing
• Spain and Portugal side by side — a country matrix wherever the comparison changes a decision
• Deal Evidence — a real, dated public project or transaction behind each point
• What This Costs You — the cash, schedule or valuation consequence of getting a section wrong
• Development Gate — the evidence that must exist before the next capital release
• Ask Before You Sign — questions for the landowner, grid operator, EPC, lender, seller or offtaker
• Best Practices — numbered, actionable instructions closing each part
• A worked example, from search area to operating asset
• A regional playbook for when national law meets a real parcel in a real region and municipality
• A tear-out field checklist and twelve appendices, including control sheets and an RTB/closing matrix
• A sources appendix listing 115 Spanish, Portuguese and Iberian authorities and references, reviewed through 16 August 2026

Table of contents

1. How to use this guide: A working document, not a market report.
2. Part 0 — The Map: Who does what, which right is being created, and where Spain and Portugal diverge.
3. Part 1 — Choosing Your Game: Decide where you intend to monetise before you choose which risks to own.
4. Part 2 — Site Selection: Irradiation matters. Constraints and grid geometry decide whether the site survives.
5. Part 3 — Securing the Land: Control the site and route without buying tomorrow's problem today.
6. Part 4 — Securing the Grid: A public capacity number is not a connection asset.
7. Part 5 — Permitting and Politics: The route, the authority and the legal clock — plus the local licence to operate.
8. Part 6 — Environment, Landscape and Archaeology: The red flags that kill apparently good projects.
9. Part 7 — Agrivoltaics: Two businesses on one hectare — only if both are real.
10. Part 8 — Design and Energy Yield: MWp is not MWh, and the legal MW definition may not be the commercial one.
11. Part 9 — Offtake and Revenue: One Iberian market, two national price areas, many revenue contracts.
12. Part 10 — The Capital Stack: Who funds each gate, and what they need to see first.
13. Part 11 — Procurement and EPC: The clauses and interfaces behind the capex number.
14. Part 12 — Construction to COD: Turning paper rights into an operating power plant.
15. Part 13 — Signing the Project: The contracts that allocate development risk.
16. Part 14 — Exit: What exactly are you selling, and what survives change of control?
17. Part 15 — After COD: Performance, compliance, insurance and the rights that still need maintenance.
18. Part 16 — Taxation and Incentives: Separate commodity revenue, support, attributes and tax — then get project-specific advice.
19. Part 17 — Pitfalls: Fifteen ways an Iberian solar project loses money.
20. Part 18 — The Worked Example: One fictional Iberian solar project, from search area to operating asset.
21. Part 19 — Regional Playbook: National law is the spine; the real parcel meets a region and a municipality.
22. Part 20 — Acquiring a Solar Project: Transaction-grade due diligence for development assets.
23. Part 21 — Development Economics and Valuation: Value rights without inventing an Iberian EUR/MW benchmark.
24. Part 22 — PV + BESS: One connection point, two technologies, more interfaces.
25. Part 23 — Repowering and End of Life: Preserve rights while technology changes.
26. Part 24 — Investment Committee and Data Room: The control system behind a professional Iberian development platform.
27. The Field Checklist: Tear-out — evidence controls before you commit.
28. Appendices A–L — Reference and control sheets: Indicative Iberian timeline · Glossary · On sources · Index · Site screening scorecard · Grid control sheet · Permit control sheet · Model input dictionary · Acquisition DD request list · RTB/closing matrix · Country/regional status control sheet · Sources and references

Research and sources

Material factual figures carry a source code and a date. Arithmetic created by this guide is labelled CONSTRUCTED, and where credible public sources do not support a comparable market number the guide states NOT SOURCEABLE rather than filling the cell with a plausible average. This edition publishes no generic Iberian RTB EUR/MW value, land EUR/ha benchmark, EPC EUR/MW price, PPA price, debt margin, leverage level or project IRR, because the public record reviewed is not sufficiently comparable to support a defensible cross-market benchmark. Research and source verification completed through 16 August 2026; the Spanish and Portuguese grid, permitting, environmental, tax and support frameworks are moving quickly, so re-check every date-sensitive rule before a live filing, land exercise, acquisition, financing or NTP.

Licensing

Single-user licence. For use by the named licensee only. Redistribution, resale, posting to shared drives or internal circulation beyond the named licensee is a breach of licence. Team licences covering up to five named users are available.