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Rehlko

Global energy resilience solutions provider

Overview

Rehlko provides energy resilience solutions worldwide, helping customers secure reliable energy today and for the future. It offers power systems, engines, and related energy equipment and services through regional hubs and affiliated brands such as Kohler Home Energy, Kohler Uninterruptible Power, Curtis Instruments, and Clarke Energy. Unlike a single product line, it combines a long history in energy with a global footprint and a portfolio of established brands to deliver end-to-end energy resilience for homes and large industries. Its goal is to give customers more control over where energy is sourced and how it flows, ensuring continuous operation and a brighter future.

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About Rehlko

Simplify's Rating
Why Rehlko is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Industrial & ManufacturingEnergyHealthcare

Company Size

1-10

Company Stage

N/A

Total Funding

N/A

Headquarters

Vinita, OK

Founded

1920

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Simplify's take

What believers are saying

  • September 2026 Changzhou expansion doubles backup capacity to 11 GW.
  • Cholet expansion adds 56% space and cuts lead times 30% by November.
  • Power Plus and APM804 deepen aftermarket and data-center control revenue.

What critics are saying

  • A hyperscaler pause would hit backlog conversion and factory utilization within months.
  • China, France, and Wisconsin ramps invite execution slippage and margin pressure.
  • A severe quality failure in Changzhou could freeze shipments and destroy trust.

What makes Rehlko unique

  • Rehlko integrates engines, generators, controls, service, and monitoring into one stack.
  • More than 14 GW deployed in data centers proves mission-critical credibility.
  • Changzhou, Colmar, Cholet, and Kenosha give regionally distributed manufacturing capacity.

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Benefits

  • Health Insurance
  • Vision Insurance
  • Dental Insurance
  • 401(k) Company Match
  • Hybrid Work Options

Company News

Global Highways Inc.
Oct 28th, 2026
Rehlko's new compact engines deliver high output.

Rehlko's new compact engines deliver high output. Rehlko is expanding its compact engine range with a new high-power KDI variant, while its KSD platform continues to gain traction with construction machinery manufacturers. Reading Time: 3 mins read More power does not always have to mean a bigger engine. Rehlko is demonstrating that with a new high-power version of its KDI engine, delivering up to 50kW while retaining the same block and much of the component commonality of its existing units. The KDI 1903 TCR HP produces up to 50kW, compared with 40kW for the existing KDI 1903 TCR, while delivering 220Nm of torque at 1000rpm. According to Rehlko, this enables the engine to power machines efficiently while reducing fuel consumption compared with other engines in the same class. Maximum torque is 250Nm at 1500rpm. The high level of parts commonality with existing KDI engines is another advantage, potentially reducing the number of different components and parts customers need to hold when operating multiple variants. "It's based on the proven KDI technology and is an ideal workhorse that improves machine competitiveness," Rehlko product manager for diesels Abhiroop Garg said. This three-cylinder engine is said to deliver the same performance as many competing four-cylinder units but with a high power density, according to Garg. "What we're pushing for is more work done with this engine," he said. The benefit for original equipment manufacturer (OEM) customers is with the availability of a compact, three-cylinder diesel that can slot easily into a machine chassis, leaving plenty of space for service access. The short block, for example, means that it can be installed transversely in machines, still allowing plenty of room for a cooling system. According to Garg, the compact engine size helps OEM customers when slotting the power unit into machines in other respects, allowing it to be mounted further back and reducing the size of counterweight needed. As with the existing KDI engines, the new unit offers low fuel consumption and fast response times, as well as meeting the Stage V/Tier 4 final emissions requirements. Also of note is the fact service schedules have been extended to 500 hours, twice the time for competing units, according to Garg, and allowing a further reduction in owning and operating costs. While the new KDI is focused on delivering more power from a compact package, Rehlko is also seeing strong demand for its smaller KSD platform. The latest version of the KSD 1403 is available in three variants: naturally aspirated, turbocharged or turbocharged with an aftercooler. Rehlko said the turbocharged version with the aftercooler is now the most popular unit with customers due to its high power density. This variant is also able to operate at higher altitudes without experiencing a loss of power or risking overheating. As with the KDI units, the KSD engines offer a low cost of ownership due to long service intervals and low fuel consumption. The aftercooled unit offers a combination of high performance for its size with lower running costs than earlier generation engines. "It's a versatile engine that can go into any installation," Garg said. "It's the first fully electronic engine in the sub 19kW market." Telematics also provide OEMs a greater insight into machine performance than competing units, Rehlko said, while maintenance times are also low. And with no need for a diesel particulate filter, maintenance needs are further reduced. "We don't only produce engines; we can partner with OEMs to offer specific solutions," Garg said. The Rehlko engines are designed on modular lines, allowing a wide range of variants to suit an array of customer needs and the units are achieving strong demand with construction machinery OEMs such as Cormichi, MDB, Palfinger, Vermeer and Wacker Neuson.

Industry Europe
Sep 23rd, 2026
Trina Storage strengthens UK partnership with Clarke Energy and Temporis across three BESS projects.

Trina Storage strengthens UK partnership with Clarke Energy and Temporis across three BESS projects. 23 September 2026 10:45 Clarke Energy and Trina Storage bring online the Boat of Garten BESS and partner to deliver Bramley BESS, the third project in the Temporis Capital portfolio. The three-project collaboration spans 290 MWh and showcases the evolution of Trina Storage's Elementa platform. Trina Storage, the energy storage division of Trinasolar, is strengthening its collaboration with Clarke Energy (a Rehlko business) and Temporis Capital across three UK battery energy storage projects, reflecting a growing partnership spanning project delivery, technology and long-term services. Credit: Clarke Energy Boat of Garten BESS in Scotland, featuring custom Trina Storage Elementa battery cabinets. The 50 MW / 100 MWh project was delivered with Clarke Energy for Temporis Capital. The collaboration began with the Boat of Garten project, signed in 2024 and now connected. This was followed by the Fraserburgh project, with energisation scheduled for 2027. Most recently, the partners signed the Bramley project, which will deploy the latest Elementa solution and will connect to the grid in 2027. Together, the three projects represent over 145 MW / 290 MWh of battery storage and showcase the evolution of Trina Storage's Elementa platform. From project delivery to long-term operation Beyond technology supply and project delivery, the collaboration extends into the long-term operation of the assets through Clarke Energy and Trina Storage's revenue-aligned LTSA capabilities. These include dynamic maintenance scheduling designed to support tolling arrangements, providing greater flexibility on when maintenance activities are carried out, as well as advanced metering capabilities enabling multiple Capacity Market contracts within the same site. The projects also sit within a broader strategic relationship between Trina Storage and Rehlko, through Clarke Energy. The companies have signed an MoU to collaborate in the UK market, combining Trina Storage's battery technology and lifetime warranted performance with Clarke Energy's considerable experience in delivering integrated solutions, maintaining performance and availability of the asset through life. "Expanding our collaboration with Temporis Capital and Clarke Energy across three projects reflects the strong relationship we have built together in the UK market," said Gabriele Buccini, Head of Trina Storage Europe. "By combining high-performance storage technology, lifecycle services and strong local partnerships, we can support our customers from project delivery through long-term operation and help maximise the value of their assets." Adam Wray-Summerson, Technical Sales Director at Clarke Energy, shared how "our collaboration with Trina Storage and Temporis Capital demonstrates the value of building strong, long-term partnerships across the battery storage sector. From Boat of Garten through to Fraserburgh and now Bramley, we have worked together to deliver projects that combine proven technology, effective project execution and a focus on long-term operational performance. As the UK energy storage market continues to mature, Clarke Energy, as part of Rehlko, remains committed to providing investors and asset owners with bankable delivery and lifecycle support solutions that maximise asset value throughout the project lifecycle." This collaboration demonstrates a long-term approach to the UK storage market, combining technology evolution, project execution and lifecycle services.

WisBusiness
Sep 23rd, 2026
WED AM News: County leaders urged to ensure processes are well-defined before introducing AI; Rockwell Automation report explores cybersecurity views.

WED AM News: County leaders urged to ensure processes are well-defined before introducing AI; Rockwell Automation report explores cybersecurity views. September 23, 2026 - A data expert with Waukesha County urged local government leaders to ensure any processes they're looking to automate with AI are well-defined, to avoid higher costs and other pitfalls. Kevin Koenig, the county's solutions and data engineering manager, yesterday addressed members of the Wisconsin Counties Association during the group's annual meeting in Wisconsin Dells. "If we cannot describe the process, we are not ready to automate it," Koenig said. "We are definitely not ready to hand parts of it off to an AI agent... many of our processes cross departments, cross systems, cross policy." He noted the visible portion of a given county's process for a government function may not represent the full scope, including various records-keeping requirements and approval chains. Koenig urged county staff to "think across" the organization when deploying an AI system, not just the piece of the process they handle. When considering deploying an AI tool, especially an agentic system that can take more substantial actions on its own, he urged attendees to consider who's in charge of approving changes to the target process, what happens when there's exceptions, which records are created and what policies govern what's being done. "Process clarity is AI readiness," Koenig said. He also noted AI can be extremely useful, but can't compensate for an undefined or inconsistent workflow and can "scale the confusion faster" if used in an improper way. "Risks of unclear process could be inconsistent resident service, faster mistakes, reduced staff trust, harder troubleshooting, poor auditability and high usage cost due to re-work and repeated prompts to the AI," he said. And because AI systems are so heavily reliant on data, he cautioned county leaders that data within government is subject to numerous retention and public records requirements, raising issues about privacy for residents. "Some of the risks with poor data include wrong recommendations, conflicting answers, overexposure of sensitive information, low trust and higher operating costs," Koenig said. "So trustworthy AI starts with trustworthy data, and cost-effective AI starts with well-scoped data." - A new report from Rockwell Automation finds businesses around the world are largely confident in their ability to defend from online threats, even as cybersecurity incidents are on the rise. The Milwaukee company yesterday issued its report, "Operational Resilience in the Age of Connectivity," drawing on information provided by 1,500 manufacturing and industrial operations across 17 countries. Although 90% of the businesses tapped for the report say they're confident in their ability to "prevent, contain or recover from" a cyber incident, 46% also said they've experienced one in the past year alone. Report authors say this signals a "disconnect" between true operational risk and confidence in cybersecurity protections. Still, about 35% of these operations said cybersecurity is one their biggest external obstacles to growth in the coming 12 months, ranked No. 2 among concerns behind only workforce shortages. Meanwhile, 62% of companies in the report say they've already invested in cybersecurity platforms, while 45% say they plan to apply AI and machine learning to cybersecurity efforts in the coming year. "These findings point to a clear shift: organizations are embedding cybersecurity into broader digital transformation strategies alongside AI, automation, cloud technologies and connected operations," authors wrote. The report urges business leaders to stay vigilant as IT and operations "become increasingly interconnected," muddying the waters for cybersecurity incident preparedness. Authors say companies face a growing challenge in distinguishing "routine" security threats from those that could disrupt their operations. "Continuous monitoring helps understand the risks that matter most before they cause disruption," authors wrote, touting the impact of proactive detection and response programs. - Rehlko, a Milwaukee-based energy systems business, plans to double its annual backup power capacity by expanding its manufacturing operations in China. The company yesterday announced it's investing in its manufacturing facilities in Changzhou, expected to boost its capacity from 5.5 gigawatts to 11 gigawatts. The release notes rising demand from AI infrastructure such as data centers, semiconductors and other factors is straining power infrastructure around the world. Brian Melka, president and CEO of Rehlko, calls the city a "critical hub" enabling the company to serve customers in Asia, Latin America, Europe, the Middle East and Africa. "Our continued investments at Changzhou reflect the discipline behind our growth, doubling capacity while sharpening the speed and precision behind every system we ship," Melka said in a statement. The company says it has recently launched a new production line for smaller generator systems at its Changzou site, along with a smart warehousing system, upgrades to larger generator production capacity and integrated automated guided vehicles. Since 2020, shipment revenue at the site has doubled, according to yesterday's release. - A spokesperson for the U.S. Department of Veterans Affairs is defending the quality of care at the Tomah VA Medical Center after U.S. Sen. Tammy Baldwin called for an investigation into the hospital. The Madison Dem recently sent a letter to the department's leadership expressing "grave concern" over allegations of patient care issues at the Tomah center, including inadequate staffing leading to injuries and other risks. She said employees of the hospital have reached out to her office to raise concerns about "poor management" and the care of hospice patients in particular. When asked for comment, a spokesperson with the federal agency's Office of Public Affairs said providing "the best healthcare possible is a top VA priority." "In an effort to quickly investigate this situation, VA has asked Sen. Baldwin for specific details - such as dates, times and locations - regarding the allegations she cites," the spokesperson wrote in an email. "We look forward to receiving her response." The spokesperson noted a 2026 Office of the Inspector General inspection of the Tomah site found no instances of quality, safety or administrative issues. And the email said the hospital's nurse turnover rate is about 5%, well below the national average rate of 17.6%. Baldwin's letter specifically mentioned pressure injuries - also called bedsores - resulting from staffing and management problems. But the VA spokesperson said the rate of hospital-acquired pressure injuries "remain very low" at Tomah. "In Q3 of FY2026, no triggering cases for high-risk residents at Tomah were discovered at the community living center - the nationwide average is nearly 8%," the spokesperson wrote. Meanwhile, Baldwin's letter also highlighted the recent criminal charges announced against a former Tomah VA nurse, arguing they "raise serious questions about the care of the hospice patients" at the facility as well as the VA's response. Beth Holz was reportedly charged with intentionally withholding oxygen from a hospice patient at the facility. The agency's spokesperson said the VA "moved quickly and according to established procedures" after the incident took place and immediately removed Holtz. Following an investigation, she resigned in January of this year, the spokesperson said. For more of the most relevant health care news, reports on groundbreaking research in Wisconsin, links to top stories and more, sign up today for the free daily Health Care Report from WisPolitics and WisBusiness.com. - Gov. Tony Evers has appointed banking executive Aaron Towns to the board of directors for the Wisconsin Economic Development Corp., touting his role as "a respected member of the business community" in the state. Towns' appointment fills the spot left empty by former member John Brogan when he resigned. He's currently director of commercial banking in Wisconsin at BMO Financial Group. In a statement on the new role, Towns says he's honored to be appointed and grateful for the opportunity to serve Wisconsin. "Our state has extraordinary people, businesses, ideas, and resources," he said. "I look forward to bringing my experience in finance, innovation, and economic development to help connect these strengths, expand opportunity, and strengthen Wisconsin's economy and communities."

PR Newswire
Sep 22nd, 2026
Rehlko Doubles Annual Backup Power Capacity at Changzhou manufacturing facility.

Rehlko Doubles Annual Backup Power Capacity at Changzhou manufacturing facility. Sep 22, 2026, 09:15 ET Strategic Investment Program Doubles Annual Backup Power Capacity from 5.5 GW to 11 GW, Strengthening Rehlko's Global Manufacturing Network Across Asia, EMEA, and Latin America MILWAUKEE, Sept. 22, 2026 /PRNewswire/ - Rehlko, a global industrial energy resilience platform providing custom-engineered, integrated power solutions for mission-critical infrastructure worldwide, today announced a strategic investment program at its Changzhou, China, manufacturing facility to double annual backup power capacity from 5.5 GW to 11 GW. The investment comes as demand from AI infrastructure, data centers, semiconductors, digitalization, and the broader push for supply chain resilience strains power infrastructure worldwide. The Changzhou facility is an increasingly important component of Rehlko's global manufacturing network, producing generator systems ranging from 6 kW to 4,000 kW as well as key components that support Rehlko's broader manufacturing operations globally. The facility's role as a strategic manufacturing hub helps reduce supply chain bottlenecks and strengthens the resilience of Rehlko's global operations. The site serves customers across China, Southeast Asia, EMEA, and Latin America. "Our continued investments at Changzhou reflect the discipline behind our growth, doubling capacity while sharpening the speed and precision behind every system we ship," said Brian Melka, President and Chief Executive Officer of Rehlko. "Changzhou is a critical hub in our ability to serve customers not only across Asia, but also throughout EMEA and Latin America." Recent investments at Rehlko's Changzhou facility include the launch of a smart production line for smaller generator systems, a new smart warehousing system, upgrades to the medium and large generator production lines, and the integration of automated guided vehicles and a manufacturing execution system. These investments are already delivering measurable results, with shipment revenue at the Changzhou facility doubling since 2020 and first pass yield improving from 93% to 98%. The doubling of annual backup power capacity, from 5.5 GW to 11 GW, reflects the combined impact of the investment program's capacity expansion, automation, and operational improvements, and is targeted without requiring any physical expansion of the facility's footprint. The Changzhou expansion is part of Rehlko's broader global manufacturing investment, which includes capacity and capability expansions at facilities in Colmar and Cholet in France and Kenosha in the United States, as well as the 2025 acquisitions of WB Power Services and Wiltech Acoustics in the United Kingdom. Together, these investments reflect Rehlko's commitment to building a manufacturing platform capable of supporting customers across every major region it serves. About Rehlko Rehlko is a global industrial energy resilience platform delivering custom-engineered, integrated power solutions for mission-critical infrastructure. With more than 100 years of heritage, Rehlko is positioned at the intersection of AI expansion, grid instability and electrification. Its vertically integrated, full-lifecycle capabilities span engineering, manufacturing, deployment, servicing and operation of backup, prime, continuous and bridging power systems, accelerating speed-to-power while building long-term customer relationships and service revenue. Rehlko is a leading power solutions provider to hyperscale and non-hyperscale data centers, with an established presence across healthcare, telecommunications and industrial markets. The company has deployed more than 14 GW of data center capacity, over 90% custom-engineered for specific applications. Inventor of the world's first internal combustion engine-driven generator, Rehlko now operates across 80+ global locations, combining global scale and singular focus to power the world's critical infrastructure. Learn more at rehlko.com. SOURCE Rehlko

PR Newswire
Sep 22nd, 2026
Rehlko doubles annual backup power capacity at Changzhou plant.

Rehlko doubles annual backup power capacity at Changzhou plant. Sep 22, 2026, 09:15 ET Strategic investment program doubles annual backup power capacity from 5.5 GW to 11 GW and strengthens Rehlko's global production network across Asia, EMEA and Latin America MILWAUKEE, September 22, 2026 /PRNewswire/ - Rehlko, a global industrial energy resilience platform that delivers custom-engineered, integrated energy solutions for mission-critical infrastructure worldwide, today announced a strategic investment program for its Changzhou, China plant, doubling annual backup power capacity from 5.5 GW to 11 GW. The investment comes as demand from AI infrastructure, data centers, semiconductors and digitalization, as well as the broader push for resilient supply chains, puts pressure on energy infrastructure worldwide. The Changzhou plant is an increasingly important part of Rehlko's global production network. The plant produces generator systems from 6 kW to 4,000 kW and key components supporting Rehlko's broader global manufacturing operations. The plant's role as a strategic manufacturing center helps reduce supply chain bottlenecks and strengthens the resilience of Rehlko's global operations. The site serves customers in China, Southeast Asia, EMEA and Latin America. "Our continued investments in Changzhou reflect the discipline behind our growth: we are doubling capacity while increasing the speed and precision with which we deliver every system," said Brian Melka, President and Chief Executive Officer of Rehlko. "Changzhou is a critical hub for our ability to serve customers not only in Asia, but also in EMEA and Latin America." Recent investments in Rehlko's Changzhou plant include the commissioning of a smart production line for smaller generator systems, a new smart warehouse system, upgrades to the production lines for medium and large generators, and the integration of automated guided vehicles and a manufacturing execution system. These investments are already delivering measurable results. For example, revenue from shipments from the Changzhou plant has doubled since 2020, and first-pass yield has improved from 93% to 98%. The doubling of annual backup power capacity, from 5.5 GW to 11 GW, reflects the combined effect of capacity expansion, automation and operational improvements within the investment program. The capacity doubling is targeted without expanding the plant's physical floor space. The Changzhou expansion is part of Rehlko's broader global manufacturing investments. These include capacity and operational capability expansions at its plants in Colmar and Cholet, France, and Kenosha in the United States, as well as the acquisitions of WB Power Services and Wiltech Acoustics in the United Kingdom in 2025. Together, these investments reflect Rehlko's commitment to building a manufacturing platform that can support customers in every major region in which it operates. About Rehlko Rehlko is a global industrial energy resilience platform that delivers custom-engineered, integrated energy solutions for mission-critical infrastructure. With more than 100 years of experience, Rehlko sits at the intersection of AI growth, power grid instability and electrification. Through vertically integrated full-lifecycle capabilities, Rehlko's activities include engineering, manufacturing, deployment, maintenance and operation of backup power, prime power, continuous power and bridging power systems. This reduces the company's lead time to power availability (speed-to-power) while building long-term customer relationships and service revenues. Rehlko is a leading provider of energy solutions for hyperscale and non-hyperscale data centers, with an established presence in healthcare, telecommunications and industrial sectors. The company has more than 14 GW of data center capacity installed, of which more than 90% is custom-engineered for specific applications. As the inventor of the world's first internal combustion engine-powered generator, Rehlko is now active in more than 80 locations worldwide. The company combines global scale with sharp focus to power the world's critical infrastructure. Learn more at rehlko.com.

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