Philippines | Kalayaan 2 Wind Power Project

Project Overview

The Kalayaan 2 Wind Power Project supports the Philippines’ transition to clean energy. This renewable energy development required the construction of three wind turbine foundations on hilltop terrain. Soil conditions were challenging, especially at Turbine 1 (WTG 01), where subsoil included clay and possible rock or boulder obstructions.

Challenge

The original design called for bored piles to support each 25-meter-diameter turbine foundation. However, this method posed cost, time, and logistical constraints given the remote hilltop location. Menard was consulted to provide an alternative solution that would meet structural requirements, reduce installation time, and improve cost-efficiency.

Ground Conditions

Site investigations revealed:

• Predominantly clayey soil

• Subsurface obstructions (likely boulders) at WTG 01

• Variability in refusal depths across locations

These conditions made deep piling slower and less predictable.

Ground Improvement Approach

Menard proposed the use of Controlled Modulus Columns (CMC) to reinforce the ground beneath each turbine foundation. CMC is a rigid inclusion technique designed to improve load-bearing capacity while controlling settlement.

Execution Scope

• 102 CMCs per turbine

• Depth: 6 meters per column

• Installed within circular foundation zones (25m diameter each)

• Additional CMCs added at WTG 01 to overcome early refusal zones

Validation

• 1 Plate Load Test conducted per turbine

• All results confirmed that CMCs met design performance requirements

Project Significance

This was Menard’s first CMC project in the Philippines. Each wind turbine was treated and completed in under one week, demonstrating both the scalability and efficiency of CMC for renewable energy infrastructure.

Benefits for the Client

✔️  Faster installation compared to bored piles
✔️  Cost savings on foundation scope
✔️  Reduced environmental impact due to less excavation
✔️  Quality assurance via testing and performance validation

This project illustrates how Menard applies specialized soil improvement solutions to support renewable energy growth in Southeast Asia—safely and efficiently.

Building wind or solar facilities on unstable or remote terrain?

Let’s explore practical ground improvement options like CMC that can help you meet structural needs while staying on schedule. Learn more at Menard Asia.