Hidden Risks of Value Engineering in Solar

In theory, value engineering (VE) is a positive process: optimizing a design to reduce costs without compromising function or quality. In practice, however, VE in commercial solar often becomes a hurried exercise in cutting corners to save a project's margins. When cost-cutting is the only objective, value engineering quickly becomes 'de-value engineering,' introducing hidden risks that haunt the project for years.

The Equipment Swap Trap

The most common VE tactic is swapping out specified components for 'equivalent' cheaper alternatives. While the specs might look similar on a datasheet, the real-world performance, reliability, and technical support can vary wildly. A cheaper inverter might save $5,000 upfront but lead to $50,000 in lost production and O&M costs over its lifespan. If the engineer isn't involved in validating these swaps, you are flying blind.

Compromising Constructability

Reducing conduit sizes, thinning out structural supports, or tightening equipment clearances might save material costs, but it often makes the project significantly harder and slower to install. The labor costs of a difficult installation often far outweigh the material savings. True value engineering should make the project easier to build, not just cheaper to buy.

Ignoring Long-Term O&M

Decisions that save money today often create headaches for the O&M team tomorrow. Tightening setbacks for extra modules might increase initial capacity, but if it makes it impossible for a technician to safely access a string for testing, you've created a permanent operational liability. VE must be viewed through the lens of the full 25-year asset life.

The Engineer's Role in VE

For value engineering to work, it must be led by engineering, not just procurement. An engineer can identify where costs can be safely trimmed and where they must be protected to ensure performance and safety. VE should be a collaborative process that seeks to improve the project's overall value, not just reduce its initial price tag.

At Jolt, we help our clients optimize their designs without compromising their integrity. We provide the technical guidance that ensures your 'value' engineering actually adds value.