Recommissioning a Mothballed Solar Cell Plant in Five Months: Lessons from an Automation Project

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Overview

On an episode of Manufacturing Happy Hour, the host sat down with Chris and Cassie of ET Tech Group to walk through one project: bringing a clean energy manufacturing facility, a solar cell plant that had been mothballed for several years, back into production. The team went from a front-end engineering and design (FEED) study to recommissioning in about five months. The conversation centered on one question: what does it take to deliver a brownfield automation project on a schedule that tight without cutting corners? The guests' answer rested less on technology than on early engagement, alignment with the client's priorities, relentless communication, and the discipline to stick with standards.

16 min read

A Plant Where Automation Was an Afterthought

Cassie described how the project began. The client had operated the facility for a number of years, manufacturing solar cells, then mothballed it. When they decided to restart production, they began construction and demolition for major upgrades before thinking seriously about automation. In Cassie's telling, the client realized partway in that "there's this thing called automation that we think we're going to need," but they hadn't planned for it.

The situation was worse than a planning gap. During demolition, crews had destroyed wiring and other infrastructure that the facility's controls depended on. Chris described what the team later found. Wiring had been cut because someone assumed it was no longer needed, even though it was landed on existing I/O. The remote I/O connections for the chemical distribution system and the gas distribution system had been severed. Ethernet connections and many other electrical components were damaged. Chris didn't recall the specific piping items, but said a number of them were no longer functional and needed attention.

How Often Automation Gets Overlooked

The host asked how common it is for automation to be an afterthought. Chris joked that for automation engineers, "it's always an afterthought," then gave a serious answer. Their view is that automation has an outsized impact, relative to mechanical, electrical, and process work, on how well production staff can actually use a facility or piece of equipment. Some clients have savvy automation staff who can hand over clear requirements. Others don't understand it at all. Chris compared it to how most people don't understand why a given piece of software isn't working or isn't integrated. In Chris's opinion, that is how automation looks to other engineering disciplines and to managers.

Cassie said it is becoming more common for clients to think proactively about automation. Even so, many don't grasp the full range of options available to them. They may know certain tools without realizing everything "in the arsenal." Cassie offered a rule of thumb: in a large capital project, automation is typically around 10% of the total budget, but it is "a really critical 10%" needed to make manufacturing work the way the owner wants.

Chris later added a broader explanation. For much of their career, they didn't understand why automation was so often poorly considered. They came to believe that automation, as the industry practices it, isn't taught much in American schools, although that is starting to change. People therefore lack the vocabulary, and they may simply be more interested in the mechanical or process side. Chris said they couldn't blame people for not knowing what they don't know. Still, a poor facility startup is "extremely stressful, distracting and costly," so automation has to be accounted for either way.

The One Piece of Advice: Start Early

Asked for the single most common pitfall, Cassie said teams wait too long. They assume automation is one of the last things to go into a plant and put off the conversation. Cassie's advice was to start earlier than you think you need to and to engage an automation partner, because time lets a project accomplish much more. Chris agreed that starting early is the main point. They added two more: know what you don't know, and, from the integrator's side, find a partner you can trust who knows what they're doing and is working for you rather than for other interests.

Winning the Work: A Friday Conversation, a Monday Site Visit

The lead came through an ET Tech Group business development contact who was connected with people in the project's region. The client was struggling to get the plant back into production and reached out. Cassie joined an initial one-hour conversation with other business development staff and the end user to lay out the challenge and how the client might reach their goal.

One thing became clear in that first call: schedule was the critical driver. The client had committed production dates and delivery timelines to its own customers and needed to meet them. At the same time, the unknowns were enormous. There were no real drawings, very little knowledge of the installed base, and no clear picture of what construction had destroyed. Based on past experience with situations like this, ET Tech Group recommended starting with a FEED study.

According to Cassie, the deal closed quickly because of a concrete offer. The conversation took place on a Friday, and the team said an engineer, Chris Hunter, who had the right skill set and knew the small amount of existing automation platform on site, could be there the following Monday. Because the client prioritized schedule, Cassie said, it was easy for them to agree to start with a site study.

Chris recalled that around November or December 2023, the project was just something Cassie kept mentioning in leadership meetings while working on the proposal, until Chris got pulled in. From that outsider's vantage point, Chris credited Cassie with translating "automation speak" into how decisions would affect the client's production goals. Chris also credited the client. In hindsight, Chris said, the client team was unusually sharp because they recognized they weren't equipped to make these decisions alone. As Chris put it, the options are overwhelming if you're not in the business, before you even account for best practices like cybersecurity and safety.

Cassie connected this to one of ET Tech Group's core values, "humble confidence," and said the client team embodied it. They were confident in what they knew and could deliver, and humble about where they needed help.

Where Trust Was Won

Chris briefly took over the host's role to ask Cassie about the moment trust was established. Cassie pointed to that first conversation. The team laid out a clear action plan, promised an engineer on site the next business day, and followed through. Cassie called that "a pivotal trust building moment." Throughout the FEED study, trust grew because the team was open about issues and challenges and also acted as a partner in solving them. They raised problems so everyone could take part in the conversation, then proposed ways through them while asking for the client's input.

Protecting the FEED Study Under Schedule Pressure

The host asked how the team kept a five-month schedule from pressuring them into skipping or shortcutting the FEED study. Cassie said she has heard clients say they don't have time for one. This time, two factors made it work. First, because of the values alignment and the early work together, the client understood the big-picture gaps that had to be resolved before full execution could begin. Second, the team found creative ways to fast-track parts of the schedule so that not everything waited on the study.

The main example came from Nilesh Law. He proposed designing electrical panels that were slightly oversized and included some components the team wouldn't normally specify, so the panels would be guaranteed to work before the design was final. That let panel design and fabrication start before the FEED study and full system design were complete.

Chris explained why this mattered. A separate professional process design firm, hired by the client, was still doing its own design while the automation project was getting underway. Those two efforts didn't naturally fit together. Building the panels a bit bigger meant that, whatever came out of the safety study or decisions such as whether to use redundant pumps, the panels could be installed and would handle any of those scenarios. Cassie said this was possible because the client was clear that schedule came first.

What Deviated: Construction, and a Late Hazardous Monitoring Scope

Asked what didn't go to plan, Chris first joked that there were "absolutely no deviations," then answered: "everything related to construction."

To keep on track, the team sent senior people to the site to be daily "eyes and ears," including running the team's electricians, because conditions changed so quickly. Chris described several sets of what they called scrums. There were check-ins with the process designer and the customer several times a week, plus a routine internal scrum with the automation team. Chris said this was the most efficient way to make sure everyone heard the latest information and worked efficiently each day.

Chris singled out one strategy the team doesn't normally use. Cassie positioned Satya, an engineer on the East Coast, as a requirements manager. Satya's full-time job was to talk with all the design, mechanical, and other parties, confirm ET Tech Group's requirements were being met, catch new information, and distribute it. Chris described her as polite but so tenacious that Chris made her a mug with a pit bull on it. In one example, the team needed a final I/O count from a vendor for a central system. Chris didn't remember the vendor. Some vendors were overseas, so responses could take three days instead of one, and Satya followed up every single day. Chris said they didn't realize how instrumental the role was until the project was closing. Cassie called her "the accountability master." The host suggested "tenacious politeness" as a new core value, and Chris said almost everyone on the team fit that description.

Cassie described a different deviation. The team expected ongoing iteration in the process design, since that is common. What came "out of left field" was a late-stage scope addition. The client had hired a different partner to install a hazardous monitoring system, and that partner didn't grasp the schedule drivers and what they meant for the business. The client asked ET Tech Group to build those panels instead. With the team already fully committed to the timeline, they took a similarly creative approach, designed the panels, and turned them around very quickly.

Culture: Working for the Client, Not the Project

The host asked what lets the company stay flexible. Cassie, who has been with ET Tech Group for 12 years, said the people are helpful, kind, intelligent, hardworking, and flexible, and focused on finding solutions and helping clients reach their goals. Chris, who has been there three years and said they vetted the company heavily before joining, framed it as: "pretty much our whole engineering team is aligned to work for the client, not the project." Projects still have to stay on track, Chris said, but if the project or the approach no longer serves what the client says its best outcome is, the team will adjust, because they want to be a long-term partner. Chris acknowledged that other business models focus on executing a project and moving on, and said those aren't right or wrong. Working for the client can even mean descoping, telling a client they don't need something.

On being proactive and sharing bad news quickly, Cassie again pointed to culture. She said the CEO is good at hearing bad news, and that open communication about mistakes lets people work together on solutions. Chris said proactiveness is one of the key traits they screen for when hiring. In a service business, Chris said, you have to be proactive or it doesn't work. It can be coached and encouraged, but some people just don't take to it.

The Technical Side: PlantPAx Libraries and Functional Specifications

The host asked what made the solution best-in-class despite the pace. Chris said they have worked at good integrators and grown used to high-performing teams, but this project team "set a new bar." Chris came up on Allen-Bradley PLCs but had never used PlantPAx before. Chris noted that DCS and DCS-hybrid vendors often promise their libraries can cut development time by around 40%, and said they rarely saw that happen. On this project, the team stuck with the library standards for all the equipment and finished the code extremely fast. In Chris's view, the product's promise was realized because the engineers had the discipline and commitment to stick with it.

Cassie said client clarity was also key. The client didn't ask for tweaks, because everyone agreed that "fast delivery is the number one priority." Standard libraries were a major asset in that.

Chris added what they called "a boring answer": ET Tech Group's mandatory project life cycle requires writing functional specifications, because that is "your map" of what to build, where "the brain work goes in." The team was strict about documenting what the system needed to do, having the client review and approve it, and then building on the libraries. Chris said people coded their portions in about a week or two.

The host, a former Rockwell employee who had worked to bring PlantPAx to market early in their career, said the tool has come up repeatedly on the show, including with a company building control systems for bourbon distilleries. The host also recalled engineers who wanted to reinvent the wheel "for no apparent reason." Chris agreed and said that was why they emphasized discipline. An engineer wanting to change how graphics look because it's interesting is "not the best outcome for the client."

Scale: 45 People, Plus Electricians

Near the end, Cassie prompted Chris to share how many people worked on the project. Chris said they counted 45 at ET Tech Group, including core team members, to make the five-month schedule happen. On top of that, there were about 35 electricians on site at one point, and the customer's own team was fairly large. Chris described it as "an orchestrated system" of electrical designers, networking specialists, hardware specialists, and others, and said no single person could handle all that expertise, let alone the volume of work. Asked whether humble confidence or polite tenaciousness held that group together, Chris chose polite tenaciousness, calling it "a large volume of cats to keep on the same page."

Closing Advice: The Art of the Possible, and Get Help

Cassie returned to the FEED study. Besides helping teams work through open-ended questions, she said, it shows owners what's possible in their facilities that they hadn't realized. She mentioned a manufacturer she knows of that had been intentional about its automation. When tariffs were recently announced, it was able to shift where certain product lines were manufactured very quickly to minimize the impact. Cassie said many factors made that possible. Her encouragement was to plan for the big picture and the future, ask "art of the possible" questions before a large capital investment, and find partners who can help answer them.

Chris's final advice was that automation is a deep discipline with more requirements than any one person can realistically handle, so leaders should plan around that with internal resources, external resources, or both. According to Chris, these systems have become more reliable and capable, but also more complex in their layers, running from a field instrument all the way, in some cases, to the ERP systems the C-suite uses, along with the hardware they run on. In Chris's view, the expertise required now exceeds what one automation engineer can handle alone.