Wind Energy Project Timeline Template

The Problem: Wind Projects Take Longer Than Most Developers Plan

Utility-scale wind energy projects are among the most schedule-sensitive infrastructure investments in the power sector. Unlike solar, wind development involves taller structures with greater FAA coordination complexity, longer turbine lead times (18–24 months for major OEMs), and more complex civil construction requiring crane pads, access roads, and underground MV collection systems designed for remote terrain.

A typical wind project from site control to commercial operation spans 36 to 60 months. Developers who track milestones informally in spreadsheets routinely discover that turbine delivery dates don't align with construction readiness, or that avian and bat surveys (which require full seasonal coverage) weren't started early enough to meet permitting deadlines. These gaps cost projects months and millions.

The solution is a wind energy project timeline built in a tool purpose-designed for dependency tracking. gantt-chart.io lets you map every phase of wind development, assign owners, and surface critical path conflicts before they become schedule-busting surprises.

Prerequisites

Wind resource data from at least 12 months of met tower monitoring
Site control (lease or option) on sufficient acreage for turbine spacing
Preliminary interconnection study or queue position confirmed with ISO/RTO
FAA airspace pre-consultation initiated
Avian and bat studies started (surveys require full annual cycle)
State siting board or county land use process identified

Wind Energy Project Timeline Template

Phase 1: Resource Assessment and Site Control (Weeks 1–16)

[ ] Install and operate permanent meteorological (met) tower
[ ] Commission wind resource assessment and energy yield analysis
[ ] Complete land control — execute leases with all landowners in project footprint
[ ] Conduct preliminary turbine micrositing and layout optimization
[ ] Submit interconnection pre-application and queue application
[ ] Initiate avian and bat use surveys (full seasonal monitoring required)
[ ] Engage cultural resources consultant for Section 106 review

Phase 2: Permitting and Environmental Review (Weeks 14–40)

[ ] File state siting board application or county special use permit
[ ] Complete wetland delineation and Army Corps Section 404 assessment
[ ] Prepare and submit NEPA Environmental Assessment
[ ] Complete FAA Form 7460-1 obstruction evaluation for all turbine locations
[ ] Obtain USFWS incidental take permit (if eagle or listed species present)
[ ] Execute radar/aviation coordination with DOD if applicable
[ ] Secure noise and shadow flicker study approval from local authority
[ ] Obtain construction stormwater permit (NPDES/SWPPP)

Phase 3: Engineering and Turbine Procurement (Weeks 24–52)

[ ] Select turbine OEM and execute turbine supply agreement (TSA)
[ ] Complete foundation geotechnical investigation
[ ] Design access roads, crane pads, and underground collection system
[ ] Complete 30% civil and electrical engineering design
[ ] Execute interconnection facilities study and finalize GIA
[ ] Issue EPC RFP and evaluate contractor bids
[ ] Complete 90% engineering drawings and obtain structural PE stamp
[ ] Execute balance-of-plant (BOP) subcontracts

Phase 4: Civil Construction and Turbine Erection (Weeks 48–84)

[ ] Mobilize civil contractor; begin access road and crane pad construction
[ ] Install underground MV collection system
[ ] Excavate and pour turbine foundations
[ ] Receive turbine tower sections, nacelles, and blades on site
[ ] Erect turbine towers, nacelles, and blades (crane mobilization)
[ ] Install substation and interconnection facilities
[ ] Commission turbines individually through OEM commissioning checklist
[ ] Complete site restoration and erosion control closure

Phase 5: Commissioning and Commercial Operation (Weeks 80–96)

[ ] Complete utility interconnection witness testing
[ ] Receive Permission to Operate (PTO) from ISO/RTO
[ ] Achieve Mechanical Completion certification
[ ] Activate SCADA monitoring and integrate with NERC CIP controls
[ ] Deliver as-built drawings and turbine O&M documentation
[ ] Achieve Commercial Operation Date (COD) and begin PPA deliveries

Common Mistakes

Starting avian surveys too late: USFWS requires a full annual cycle of avian and bat monitoring. Starting surveys after site control is executed often means waiting an additional year for survey completion before permits can be filed.
Underestimating turbine lead times: Major OEMs (Vestas, Siemens Gamesa, GE Vernova) book production slots 18–24 months in advance. Delaying the TSA by even a quarter can push COD by a full year.
Ignoring DOD radar coordination: Wind turbines can interfere with military radar systems. DOD objections filed late in development can require costly turbine relocations or kill a project entirely.
No contingency on interconnection: MISO, PJM, and ERCOT interconnection queues are multi-year backlogs. Build 6–12 months of schedule contingency into the interconnection phase.

Timeline Summary

Phase	Duration	Key Milestone
Resource Assessment	Weeks 1–16	Met tower installed, leases executed
Permitting	Weeks 14–40	Siting approval, NEPA EA approved
Engineering & Procurement	Weeks 24–52	TSA executed, GIA signed
Civil Construction	Weeks 48–84	Turbine erection complete
Commissioning	Weeks 80–96	COD achieved

Next Steps

Managing a wind project across five phases and 96+ weeks requires more than a spreadsheet. Stakeholders — from turbine OEMs to lenders to local landowners — need visibility into progress and milestone status. Build your wind energy project timeline on gantt-chart.io, share it with your full project team, and track critical path dependencies in real time from site assessment through first power.