In-House Hidden Solar Design Costs: A CFO’s Guide

The Hidden Costs of In-House Solar Design

From my office overlooking the Chicago River, I have a clear view of the city’s relentless pace. Cranes pivot, girders rise, and every day, new structures reach for the sky, much like the growth targets on our own balance sheets. As a Chief Financial Officer in the competitive energy sector, my job is to look beyond the obvious expenses and identify the financial drains that hide in plain sight. One of the most deceptive is the true cost of an in-house design and engineering department for solar, generator, and EV charger projects.

On the surface, keeping design in-house feels like a strategic advantage. It suggests control, accessibility, and a fixed, predictable salary expense. However, after years of analyzing profit and loss statements, I can tell you that the line item for “Design Team Salaries” is merely the tip of a very large and very expensive iceberg. The numbers that truly impact your bottom line are the ones you aren’t tracking as meticulously: the hidden costs. These are the expenses that erode margins, delay projects, and ultimately hinder your ability to build a robust and resilient business.

This isn’t just about crunching numbers; it’s about understanding value and efficiency. It’s about recognizing that while your team is busy trying to navigate the complex web of every local Authority Having Jurisdiction (AHJ), from Naperville to the shadow of the Willis Tower, they could be focusing on core competencies that drive real growth. Let’s pull back the curtain and analyze the real financial picture.

Beyond the Paycheck: The True Overhead of an Employee

A designer’s salary is just the starting point. For every dollar you spend on direct compensation, you are likely spending a significant percentage more on associated overhead. These are not trivial expenses; they represent a substantial and ongoing financial commitment.

Consider a senior designer with a competitive salary. Now, let’s add the real-world costs:

• Taxes & Benefits: Employer-paid payroll taxes (Social Security, Medicare), unemployment insurance, and workers’ compensation add up quickly. Factor in a comprehensive benefits package—health insurance, dental, vision, 401(k) matching—and that salary figure can easily inflate by 25-40%.
• Infrastructure & Tools: Your in-house team requires a place to work. This includes office space, utilities, and IT support. More critically, they need access to expensive, specialized software. A single license for design software like AutoCAD can cost thousands of dollars per year, per user. Multiply that by a team of designers, and you have a significant capital outlay before a single plan is drawn.
• Non-Billable Time: What happens when the project pipeline has a lull? Your in-house team is still on the payroll. Their downtime—time spent on administrative tasks, internal meetings, or simply waiting for the next project—is a direct, unrecoverable cost to the company. According to an analysis by business management platform Beebole, this unmanaged non-billable time is a major source of financial drain and reduced profit margins in project-based industries. Outsourcing converts this fixed cost into a variable one; you only pay for design work when you actually need it.

The High Price of Human Capital: Recruitment, Training, and Retention

Finding and keeping top design talent is another significant and often underestimated expense. The process is a financial drain from the moment you post a job opening until long after the new hire is onboard.

• Recruitment Costs: The search itself is expensive. Whether you use external recruiters, who often charge a hefty percentage of the first-year salary, or dedicate internal HR resources, the cost to find qualified candidates is substantial. Add to that the “soft costs” of existing employees’ time spent screening resumes and conducting interviews—time they could be spending on revenue-generating activities.
• The Onboarding Deficit: A new designer, even an experienced one, doesn’t arrive ready to perform at 100% capacity. There is a critical ramp-up period where they must learn your company’s specific processes, standards, and, most importantly, the nuanced and ever-changing requirements of every single AHJ you work with. This learning curve, which can last for months, represents a period of reduced productivity and increased management overhead. During this time, you are paying a full salary for partial output.
• The Revolving Door of Retention: The solar industry is booming, and skilled designers are in high demand. If your compensation, benefits, or work environment aren’t competitive, you risk losing that employee you just invested thousands in training. The cycle then begins anew, compounding the costs and disrupting project continuity.

The Incalculable Cost of Delays and Revisions

In our business, time is money. Every day a project is delayed waiting for permit approval is a day you aren’t recognizing revenue. This is where the in-house model presents its greatest financial risk. An in-house team, no matter how skilled, cannot be experts in every single jurisdiction. A single mistake—a misinterpreted code, a missing detail on a plan set—can lead to rejection from the AHJ.

This is more than an inconvenience; it’s a direct hit to your profitability. A rejected plan set means:

• Rework: Your design team must stop new work to fix the old, effectively doubling the labor cost for that plan.
• Resubmission Fees: Many jurisdictions charge for each plan resubmission.
• Project Delays: The entire project timeline is pushed back, which can lead to frustrated customers, strained relationships with contractors, and delayed cash flow.

As detailed in research published by the Project Management Institute, unforeseen changes and rework are among the leading causes of budget overruns and schedule delays. When you outsource to a specialized firm like Solar Plan Sets, you aren’t just buying a drawing; you’re buying expertise and a guarantee. 

We are fluent in the language of AHJs across the nation. Our plans are designed from the ground up to meet their specific requirements, ensuring a smooth approval process. And with our unlimited revisions policy, any unexpected change requests from the AHJ are handled swiftly and without additional cost to you, providing complete budget certainty.

A CFO’s Comparison: In-House vs. Outsourced Plan Sets

Let’s visualize the financial difference. This table breaks down the costs, moving from the obvious to the hidden.

The Strategic Shift to Financial Resilience

Viewing the full financial picture makes the conclusion clear. While maintaining an in-house design team provides a sense of control, outsourcing your solar, generator, and EV charger plan sets to a dedicated expert like Solar Plan Sets offers something far more valuable: financial control and strategic resilience.

You transform your largest fixed costs into predictable, variable expenses. You eliminate the massive financial drain of recruitment, training, and software overhead. Most importantly, you mitigate the enormous risk of project delays. You empower your team to focus on what they do best—installing systems and growing the business—while we ensure your plans are fast, accurate, and permit-ready. It’s not just about saving money; it’s about investing in a smarter, more scalable, and ultimately more profitable future.

Frequently Asked Questions

Take Control of Your Project Costs Today

Stop letting hidden costs dictate your profitability. It’s time to move from financial uncertainty to strategic efficiency. Our team is ready to show you how fast, affordable, and reliable your plan set process can be.

Ask us about your specific project needs and let us recommend the perfect plan set solution. Or, if you know what you need, follow our simple three-step process: Order Plan Sets. Submit Details. Get Permit-Ready Plans. 

Let’s build a more robust and resilient future for your business, together.