Construction-Ready Solar Projects in Italy: from NTP decision to construction start
Sommario
- 1 Construction-Ready Solar Projects in Italy: from NTP decision to construction start
- 1.1 RTB vs construction-ready: the operational difference
- 1.2 The 7-step path from NTP decision to construction start
- 1.3 EPC tender process: the 6 phases
- 1.4 BoP procurement: typical lead times
- 1.5 How our advisory supports the construction setup phase
- 1.6 Frequently asked questions
- 1.6.1 What is the difference between RTB and construction-ready?
- 1.6.2 What is the typical timeline from NTP to construction start?
- 1.6.3 Does RTB.SOLAR act as EPC or as advisor?
- 1.6.4 What are the typical EPC contract terms in the Italian utility-scale PV market?
- 1.6.5 Which BoP component has the longest lead time currently?
- 1.6.6 Can the EPC tender process be compressed for urgent timelines?
- 1.7 Related advisory pages
- 1.8 📞 Plan your construction setup with us
You’ve acquired (or are about to acquire) a construction-ready solar asset in Italy and need to move quickly from acquisition to physical construction start. This page is the operational roadmap: how the 7-step path from NTP decision to mobilization works in the Italian context, how the EPC tender process unfolds, and how BoP procurement timelines align with construction milestones.
RTB.SOLAR operates as an independent Italian advisor supporting investors and IPP clients during the construction setup phase: EPC pre-qualification, tender process management, contractual structuring, and coordination with developers, EPC contractors and grid operator. We do not act as EPC, OEM or supplier.
⚙️ What this page covers: the 7 operational steps from NTP decision to construction start, the EPC tender process in 6 phases, BoP procurement timeline, and a comparison between RTB and construction-ready stages. For the broader maturity framework see solar project pipeline in Italy.
💬 Discuss your execution timeline
✉️ Email info@rtb.solar
RTB vs construction-ready: the operational difference
In the Italian PV market, the terms RTB (Ready-to-Build) and construction-ready are often used interchangeably but represent different operational maturity levels:
| Element | RTB (stage 4) | Construction-ready (stage 5) |
|---|---|---|
| Authorizations | Definitive, appeals window closed | Same |
| TICA grid connection | Signed and paid | Same + grid operator works scheduled |
| Executive engineering | Ready | Optimized for tender, BoQ finalized |
| EPC contractor | To be selected | Pre-qualified shortlist or tender ongoing |
| Financing structure | To be arranged | In place or with confirmed term sheets |
| Time to construction start | 4-9 months | 60-120 days |
In short: every construction-ready asset is also RTB, but not every RTB asset is construction-ready. The additional construction-ready layer is what enables the 60-120 day window from acquisition to mobilization.
The 7-step path from NTP decision to construction start
For investors who have just acquired (or are about to acquire) a construction-ready asset, the operational sequence from NTP decision to physical construction start typically unfolds across 7 sequential or parallel steps:
⚙️ Step 1 — NTP decision and EPC tender launch
Timing: Day 0. The Notice to Proceed (NTP) decision is made by the investor’s board or investment committee. The EPC tender process is formally launched with pre-qualified bidders. Typical duration: NTP decision can be made in a board meeting; tender launch is an immediate follow-up action.
⚙️ Step 2 — EPC tender, evaluation and award
Timing: Days 7-45. EPC bidders submit technical and commercial proposals based on the tender package. Evaluation covers price, technical compliance, references, financial strength, performance bonds. Typical duration: 30-45 days for full process; faster (15-20 days) if pre-qualification is already complete and only 2-3 finalists compete.
⚙️ Step 3 — EPC contract negotiation and signing
Timing: Days 30-60 (parallel to step 2 final phase). Negotiation of EPC contract: technical scope, schedule, milestone payments, warranties (typically 2 years on workmanship, 10+ years on modules), liquidated damages, performance bonds, advance payment bonds, exclusions, change order procedures. Typical duration: 15-30 days for negotiation, signing once final.
⚙️ Step 4 — Final engineering optimization (Issued for Construction)
Timing: Days 30-70 (overlapping). The selected EPC reviews and optimizes the executive engineering, producing IFC (Issued for Construction) drawings. Includes module choice, inverter sizing, BoP optimization, structure type selection (fixed-tilt vs tracker), DC/AC ratio refinement. Typical duration: 20-40 days.
⚙️ Step 5 — BoP procurement and supply chain commitment
Timing: Days 45-90. Long-lead items procurement: PV modules, inverters, transformer, MV/HV switchgear, monitoring system, mounting structures. Lead times in the current market typically: modules 8-16 weeks, central inverters 16-24 weeks, MV transformer 20-32 weeks, HV transformer for substations 40+ weeks. Critical path: HV transformers for projects requiring a dedicated substation.
⚙️ Step 6 — Site mobilization, permits to operate, insurance
Timing: Days 60-110. Site preparation: temporary fencing, access roads upgrade, site offices, temporary utilities. CILA/SCIA filing for construction works, ASL site safety plan, CSE (Coordinatore Sicurezza Esecuzione) designation under D.Lgs. 81/2008, insurance policies (CAR/EAR, third-party liability, contractor’s all-risks). Typical duration: 30-50 days.
⚙️ Step 7 — Construction start (mobilization complete)
Timing: Day 60-120. Physical construction begins on site. First works: civil preparation, drainage, foundations or piling (depending on geotechnical conditions). From here to COD (Commercial Operation Date) typically 6-12 months depending on plant size and complexity.
⏱️ Total timeline NTP → construction start: 60-120 days in standard scenarios. Critical path is typically driven by HV transformer lead times for projects with dedicated substations, or by EPC tender duration if pre-qualification was incomplete at acquisition.
EPC tender process: the 6 phases
The EPC tender for a utility-scale Italian solar project typically unfolds across 6 phases:
Phase 1 — Pre-qualification (RFI / EOI)
Request for Information or Expression of Interest sent to a longlist of 8-15 EPC contractors. Pre-qualification criteria: minimum experience (typically 100+ MWp built in EU), financial strength (turnover, net equity), geographic capability in target region, references from similar Italian projects. Output: shortlist of 4-6 qualified bidders.
Phase 2 — Tender package preparation
Tender documents prepared by the investor (or their technical advisor): scope of work, technical specifications, BoQ (Bill of Quantities), schedule requirements, contractual terms, commercial structure (lump-sum turnkey vs measurable, with or without OEM responsibility), evaluation criteria.
Phase 3 — Bid submission and clarifications
Shortlisted bidders submit technical and commercial offers. Clarification rounds (typically 1-2) and possibly site visits with bidders. Some investors also require post-bid technical workshops with finalists to validate assumptions.
Phase 4 — Technical and commercial evaluation
Evaluation across multiple dimensions: price (typically weighted 40-60%), technical compliance (20-30%), schedule (10-20%), references (5-10%), commercial terms quality (5-10%). Best Value Procurement (BVP) approach is increasingly common for large projects.
Phase 5 — BAFO and award
Best and Final Offer round with 1-2 finalists. Final negotiation on key terms (price, schedule, warranties, performance bonds, LDs). Award letter issued, then EPC contract negotiation begins.
Phase 6 — Contract signing and NTP
EPC contract signed, performance bond posted, advance payment bond received, all conditions precedent satisfied. NTP issued by the investor to the EPC contractor: from this date the contractual schedule starts running.
BoP procurement: typical lead times
Equipment lead times can be the critical path for construction-ready projects. Below are typical ranges for the Italian market (variable by manufacturer, volume and tier):
| Equipment | Typical lead time | Critical path? |
|---|---|---|
| PV modules (Tier-1) | 8-16 weeks | Sometimes (large volumes) |
| String inverters | 8-14 weeks | Rarely |
| Central inverters | 16-24 weeks | Often |
| MV transformer (cabina) | 20-32 weeks | Often |
| HV transformer (substation) | 40+ weeks | Almost always |
| Mounting structures | 12-20 weeks | Rarely |
| Trackers (single-axis) | 16-24 weeks | Sometimes |
| MV/HV switchgear | 24-36 weeks | Often |
⚙️ Lead times shown are typical market ranges as of 2026 and can change rapidly due to supply chain conditions, OEM capacity, geopolitical factors and policy changes (e.g. US tariffs, EU CBAM).
How our advisory supports the construction setup phase
For investors who have just acquired (or are completing the acquisition of) construction-ready assets, our advisory can support across multiple workstreams:
- 🎯 EPC pre-qualification: longlist screening and shortlist preparation based on technical and financial criteria
- 📋 Tender package coordination: review of technical specs, BoQ, contractual templates, evaluation criteria
- ⚖️ Bid evaluation support: review of technical compliance, BAFO process management
- 🤝 Contract negotiation: support during EPC contract negotiation alongside investor’s legal counsel
- 📅 Schedule management: coordination with grid operator (Terna or DSO) on grid works milestones
- 🔌 Local interface: liaison with municipality, ARPA, developer (if still involved during transition) and proprietà fondiaria
We do not act as EPC, OEM, supplier or installer: our role is exclusively advisory. The construction works are then carried out by the selected EPC contractor under direct contract with the investor (or the project SPV).
Frequently asked questions
What is the difference between RTB and construction-ready?
Every construction-ready asset is also RTB, but the construction-ready stage adds: EPC contractor pre-qualified or under tender, executive engineering optimized for tender with BoQ finalized, financing structure in place or with confirmed term sheets, grid operator works scheduled. The result is a time-to-construction of 60-120 days vs 4-9 months for standard RTB.
What is the typical timeline from NTP to construction start?
For construction-ready assets the typical timeline from NTP decision to physical construction start is 60-120 days, depending on EPC tender duration (if not yet awarded at acquisition) and BoP procurement lead times. The critical path is often the HV transformer lead time for projects requiring a dedicated substation, currently 40+ weeks.
Does RTB.SOLAR act as EPC or as advisor?
RTB.SOLAR operates exclusively as an independent advisor: we do not act as EPC contractor, OEM, supplier or installer. We support investor clients during the construction setup phase with EPC pre-qualification, tender process coordination, bid evaluation and contract negotiation. The EPC contract is signed directly between the investor (or project SPV) and the selected EPC contractor.
What are the typical EPC contract terms in the Italian utility-scale PV market?
Standard market terms include: lump-sum turnkey structure (sometimes hybrid with measurable components), milestone payments, 2-year workmanship warranty, OEM warranties passthrough for modules (10-12 years product, 25+ years performance), performance bond (typically 10% of contract value), advance payment bond, LDs for delay (capped at 10-15% of contract value), 95-98% performance ratio guarantee.
Which BoP component has the longest lead time currently?
In the current Italian market (2026), the longest lead times are typically on HV transformers for dedicated substations (40+ weeks), MV/HV switchgear (24-36 weeks) and MV transformers for cabina di trasformazione (20-32 weeks). For projects requiring a dedicated substation connection, the HV transformer is almost always on the critical path. Modules and inverters have shorter lead times but require careful ordering to align with site readiness.
Can the EPC tender process be compressed for urgent timelines?
Yes, the full tender process (8-12 weeks) can be compressed to 3-5 weeks if EPC pre-qualification is already complete and only 2-3 finalists compete on price and schedule with most other terms already negotiated. This is typical when the investor has an established EPC framework agreement or panel.
Related advisory pages
- Ready-to-Build Solar Projects in Italy — advisory overview and RTB definition
- Solar Project Pipeline in Italy — 5 maturity stages framework
- Turnkey Solar Projects in Italy — EPC integration model
- RTB Solar Projects in Italy — 6 asset categories and regional split
- Utility-Scale Solar Projects in Italy — MWp brackets and EU positioning
📞 Plan your construction setup with us
If you’ve acquired (or are about to acquire) a construction-ready asset in Italy and need advisory support during the construction setup phase, get in touch. We discuss the timeline, the EPC strategy, and how our team can support across the 7-step path to mobilization.
📞 For Italy-based callers: green number 800 955358 (Monday-Saturday, 8:00-19:00 CET)
NDA-based advisory · Independent advisor (no EPC, OEM or supplier role) · Bilingual support (IT/EN) · For complete service terms see the notice at the bottom of the site