Nicaragua San Jacinto Tizate Geothermal Power Plant Project

Imagine this: You’re leading the expansion of a critical geothermal power plant in Nicaragua, tasked with increasing its capacity from 10MW to 72MW—enough to power hundreds of thousands of local homes. The clock is ticking, the construction timeline is tight, and you’re stuck on one make-or-break detail: finding electrical wires that can handle the plant’s brutal conditions, meet strict UL certification requirements, and arrive on time. That’s exactly the predicament our client faced with the San Jacinto Tizate Geothermal Power Plant project in 2024—and how Dongguan GERITEL Electrical Co., Ltd. stepped in to turn chaos into success.​
This isn’t just a “case study”—it’s the story of how we partnered with a team of engineers in western Nicaragua, navigated the unique challenges of geothermal power, and delivered wiring solutions that didn’t just meet their needs, but exceeded them. No jargon, no over-the-top claims—just the real, unfiltered story of how we solved their biggest headaches, one wire at a time.​
The Client’s Nightmare: Why Finding the Right Wire Felt Impossible​
Let’s start with the basics: The San Jacinto Tizate Geothermal Power Plant is nestled in Nicaragua’s Maribios volcanic chain, a region where geothermal energy is abundant—but the conditions are brutal. The plant’s expansion meant wiring everything from dry control rooms to humid underground pipelines, and even high-temperature generator areas where temperatures can hit 90°C. Add in occasional exposure to corrosive substances from the geothermal wells, and you’ve got a wiring nightmare.​
Before they found us, our client had hit a wall. Here’s what was keeping them up at night:​
First, UL certification was non-negotiable—but hard to find. Nicaragua’s electrical regulations for geothermal projects require all wires to have valid UL certification, a global mark of safety that ensures products meet strict standards. The client had reached out to several suppliers, but most either couldn’t provide proof of UL certification or offered wires that were “certified” but lacked the documentation to back it up. Using uncertified wires would mean project delays, fines, or even safety hazards—something they couldn’t risk.​
Second, time was running out. The plant’s expansion had strict milestones, and every day of delay in wire delivery would push back the entire project, adding thousands in extra costs. They needed a supplier who could deliver high-quality wires fast—no excuses, no last-minute delays.​
Third, one wire couldn’t do it all. The plant’s diverse environments meant they needed different wire types for different areas: something durable for underground use, something flexible for control rooms, something waterproof for humid generator areas, and something heavy-duty for critical power distribution. Most suppliers offered a one-size-fits-all solution, which would have led to frequent failures and costly replacements down the line.​
After weeks of frustration, they found us—and what sold them wasn’t just our products, but our understanding of their stress. We didn’t just pitch wires; we listened to their concerns, asked questions about the plant’s specific conditions, and showed them proof of our experience with similar geothermal projects. That’s when they knew: they’d found their partner.​
Our Solution: Wires That Were Built for This Exact Challenge​
We didn’t just send the client a list of wires—we tailored a solution to their exact needs, based on the unique conditions of the San Jacinto Tizate plant. Here’s how we matched each wire type to their problems, and why these choices beat out the competition:​
1. XHHW Wire: For the Toughest Underground Conditions​
The plant’s underground pipelines are humid, prone to moisture, and occasionally exposed to corrosive residues from geothermal activity. Traditional PVC-insulated wires would degrade quickly here, leading to short circuits and costly downtime. That’s why we recommended XHHW Wire—a cross-linked polyethylene (XLPE) insulated wire that’s built to last in harsh environments.​
Unlike cheap alternatives, our XHHW Wire has a thick, durable XLPE insulation layer that resists moisture, chemicals, and high temperatures (up to 90°C in both dry and wet conditions for the XHHW-2 variant). We supplied it in sizes 12 AWG to 4/0 AWG, perfect for the main power supply lines and underground cabling that keep the plant running. The client loved that it eliminated the risk of wire degradation—something they’d struggled with in previous smaller projects.​
2. THHN Wire: Flexible, Affordable, and Perfect for Dry Areas​
For the plant’s control rooms and distribution panels—dry, low-humidity areas—the client needed a wire that was easy to install, cost-effective, and reliable. THHN Wire was the perfect fit. This thermoplastic high-heat nylon-coated wire has a PVC insulation layer and a nylon outer sheath, making it flexible enough to thread through tight conduits and affordable enough to stay within their budget.​
We supplied THHN Wire in sizes 14 AWG to 2 AWG, ideal for branch circuits and control wiring. Unlike more expensive wires that offer unnecessary features for dry environments, THHN Wire balances performance and value—something the client appreciated, as they were working with a tight budget for the expansion.​
3. THWN Wire: Waterproof Protection for Humid Zones​
The plant’s generator rooms and cooling systems are humid, with fluctuating moisture levels that would damage standard wires. That’s whereTHWN Wire came in—a dual-rated variant of THHN Wire that adds waterproof properties. It retains all the flexibility and cost advantages of THHN Wire but can handle wet conditions (rated 90°C in wet environments).​
We supplied THWN Wire in sizes 10 AWG to 3/0 AWG, ensuring reliable performance in areas where humidity is a constant concern. The client was relieved to have a wire that could stand up to the moisture without sacrificing performance or adding extra cost.​
4. THHW Wire: The Workhorse for Critical Power Distribution​
For the plant’s most critical systems—high-load power distribution—nothing less than THHW Wire would do. What makes this wire stand out is its THHW building wire PVC insulation: a high-quality PVC layer that offers excellent heat resistance (90°C operating temperature), moisture resistance, and flame retardancy. Unlike other wires, THHW Wire is specifically designed for industrial applications that demand both durability and safety, complying with UL 83 standards and ASTM B3, B8, and B33 requirements.​

We supplied THHW Wire in sizes 8 AWG to 500 kcmil, with a rated voltage of 600V and test voltages ranging from 2.0kV to 3.5kV (depending on size). This wire became the backbone of the plant’s power distribution system, and the client later told us they were impressed by how it held up in the plant’s high-temperature areas—no overheating, no performance issues.​
The biggest difference between our wires and the competition? We didn’t cut corners. Many suppliers offer wires that “meet” standards on paper but use low-quality materials that degrade quickly. Our wires are manufactured with premium copper conductors and insulation, and every batch is tested to ensure it lives up to its UL certification. That’s the peace of mind the client needed.​
How We Delivered: No Delays, No Surprises—Just Results​
The client’s biggest fear was delay—so we made on-time delivery our top priority. Here’s how we pulled it off, step by step:​
First, we prioritized their order. Our production capacity is 500,000 meters of wire per month, so we adjusted our schedule to focus on their 80,000-meter order. We completed production in just 25 days—10 days ahead of their 35-day deadline. That gave them extra time to prepare for installation, which they later said was a “game-changer.”​
Next, we handled the logistics headache for them. Exporting wires to Nicaragua can be tricky—customs clearance, proper packaging, and reliable shipping are all critical. We assigned a dedicated logistics team to coordinate with international shipping companies, package the wires in moisture-proof, shock-proof reels, and handle all the necessary documents (UL certification copies, test reports, export declarations). The wires shipped from Shenzhen Port and arrived at Corinto Port in Nicaragua in 18 days, and we even arranged on-site delivery to the project site—so they didn’t have to worry about picking up the order or transporting it to the plant.​

Most importantly, we kept them in the loop. Every step of the way—production, shipping, customs—we sent real-time updates. They never had to wonder where their wires were, and that transparency helped them plan their installation schedule with confidence. No surprises, no last-minute calls—just consistent communication.​
The Real Result: A Plant That Runs Smoothly, and a Client That Trusts Us​
Six months after the project was completed, we checked in with the client—and their feedback said it all. The wires we supplied have been running flawlessly, with zero electrical failures or performance issues. The THHW building wire PVC insulation has held up in the high-temperature, high-humidity areas, the XHHW Wire hasn’t degraded underground, and the THHN Wire and THWN Wire have made installation and maintenance easy.​
For the client, this meant more than just a successful project—it meant they could deliver on their promise to expand Nicaragua’s renewable energy capacity. The plant now generates enough electricity to power nearly one out of every twelve homes in the country, reducing dependence on fossil fuels and helping the local community. They also saved money by avoiding delays and costly replacements, which was a huge win for their budget.​
What meant the most to us? They told us they see us as a long-term partner, not just a supplier. They’ve already reached out about future geothermal projects in the region, because they know we understand their needs, and we deliver on our promises—every time.​
Choose Dongguan GERITEL for Your Wire Export Needs​
If you are undertaking a geothermal power project, industrial construction, or any project that requires high-quality, UL-certified wires, Dongguan GERITEL Electrical Co., Ltd. is your trusted partner. We specialize in exporting XHHW Wire, THHN Wire, THWN Wire, THHW Wire, and other electrical wires, with rich experience in serving clients in Central America, Southeast Asia, and around the world.​
Our advantages are clear: we hold full UL certification for all our core products, we have extensive experience in similar engineering projects, we offer strict quality control to ensure product reliability, and we guarantee fast delivery to meet your project deadlines. We also provide customized solutions tailored to your specific project needs, whether you need wires for high-temperature, high-humidity environments or general industrial applications.​
Don’t let wiring problems become a stumbling block for your project—just like the client of Nicaragua’s San Jacinto Tizate Geothermal Power Plant, choose Dongguan GERITEL, and let us guard your project’s success.​
Contact Us:​
Dongguan GERITEL Electrical Co., Ltd.​
Tel/WhatsApp/WeChat: +86 135 1078 4550 / +86 136 6257 9592​
Email: manager01@greaterwire.com