Polymar / ASM Industries — custom plastic injection molding and thermoplastic solutions, ISO 9001:2015 certified, serving demanding markets for 40 years from Leola, Pennsylvania.
The United States is electrifying faster than at any time in a generation, and every new data center, EV charger, and grid upgrade needs the same unglamorous parts: insulators, enclosures, connectors, and housings molded from engineering plastics. That is turning the electrical and electronics market into one of the strongest demand drivers for custom injection molding in 2026. The scale is hard to overstate. The International Energy Agency projects that global electricity consumption from data centers will more than double, from about 415 TWh in 2024 — roughly 1.5% of the world’s electricity — to around 945 TWh by 2030, growing about 15% a year, more than four times faster than total electricity demand. The United States accounts for nearly half of all U.S. electricity demand growth over that period.
After 15 Flat Years, U.S. Power Demand Is Surging
Domestically, the shift is just as dramatic. The U.S. Energy Information Administration notes that after roughly 15 years of nearly flat electricity consumption, U.S. demand has risen about 2.1% per year over the last five years and is projected to keep climbing through 2050, with data-center server energy use a major factor. The agency has projected U.S. electricity demand reaching successive record highs in 2025 and 2026, a sharp break from the flat consumption of the prior decade. All of that new load — server racks, transformers, switchgear, charging infrastructure, and the grid connecting it — is built from components that must insulate, seal, and endure heat and electrical stress. Those are jobs for engineered thermoplastics, not metal. Where a decade of flat demand meant flat orders for electrical hardware, the current surge means a rising tide of molded insulators, connectors, and enclosures flowing through the supply chain.
Why Electrical Components Are a Thermoplastic Stronghold
Electrical applications are a natural fit for plastic. The material must not conduct, must resist heat and flame, and must hold precise dimensions around delicate contacts — a profile that high-performance resins meet better than almost anything else. Thermoplastics like PPS, PEEK, and PVDF withstand high temperatures, resist chemicals, and provide inherent electrical insulation, which is why they dominate connectors, insulators, enclosures, panel components, and sensor housings. As electrification pushes voltages and power densities higher, the demands on these molded parts only intensify — tighter tolerances, higher temperature ratings, better flame resistance — favoring molders who can process specialty resins consistently and without defects. Metal simply cannot compete on insulation, corrosion resistance, or the ability to mold a complex connector body in a single shot.
Data Centers and the Grid Are Pulling Hardest
The data-center buildout is the headline driver, but it is only part of the picture. The same electrification wave is rebuilding the electrical grid, expanding EV charging networks, and packing more electronics into vehicles, appliances, and industrial equipment. Each of these needs molded electrical components by the millions: bus-bar supports, terminal blocks, junction enclosures, connector bodies, and panel components. The IEA notes that by the end of the decade, the United States is set to consume more electricity for data centers than for producing aluminum, steel, cement, and chemicals combined — a striking measure of how much new electrical hardware is being built, all of it dependent on molded insulating parts. AI-optimized data-center electricity demand alone is projected to more than quadruple by 2030, according to the IEA, concentrating still more hardware in the facilities that consume the most molded componentry. Every megawatt of new capacity translates into thousands of small, precise plastic components that keep current flowing where it should and nowhere it shouldn’t.
Precision and Materials Expertise Decide the Winners
Molding electrical components is unforgiving work. A connector with a warped wall or a housing with inconsistent dimensions can fail in the field, sometimes catastrophically, so tolerances and material handling are everything. Specialty thermoplastics are also notoriously difficult to process — they demand precise temperature control and tight parameter discipline — which is why not every shop will attempt them. That engineering rigor is the same force driving the broader move toward domestic custom molding in 2026, detailed in Reshoring and the Metal-to-Plastic Shift: The 2026 Outlook for Custom Injection Molding. The molders capturing electrification work are the ones that have invested in the equipment and expertise to run high-temperature resins repeatably, batch after batch, without the warpage or dimensional drift that dooms a connector.
The Outlook for the Rest of 2026
Every signal points to sustained, growing demand. Data-center construction shows no sign of slowing, the grid needs decades of upgrades, and electrification is spreading across transportation and industry — the same metal-to-plastic logic reshaping the automotive supply chain, explored in How Automotive Lightweighting Is Driving Metal-to-Plastic Conversion in 2026. For custom molders equipped to run specialty electrical resins and hold demanding tolerances, that adds up to a durable pipeline of work through the rest of 2026 and well beyond. The winners will be the shops that pair deep materials expertise with the process control electrical applications require — because when a part’s job is to keep electricity where it belongs, there is no room for a molding defect.
Polymar: Molded Electrical Components You Can Trust
Polymar / ASM Industries molds insulators, enclosures, and connector components from high-performance thermoplastics, holding the tolerances and flame- and heat-resistance that electrical applications demand — all under ISO 9001:2015 quality systems.
Our Capabilities Include:
- Electrical & Electronics Solutions — Insulators that insulate, enclosures that seal, and panel components engineered for electrical and thermal stress
- Manufacturing Capabilities — Advanced handling of specialty resins like PEEK, PPS, and PVDF, with metal inserts and assembly under one roof
Building electrical hardware for the electrification boom? Contact Polymar to discuss your application.
Works Cited
- “Energy and AI: Energy Demand from AI.” International Energy Agency, 2025, www.iea.org/reports/energy-and-ai/energy-demand-from-ai. Accessed 22 July 2026.
- “Annual Energy Outlook 2026.” U.S. Energy Information Administration, www.eia.gov/outlooks/aeo/. Accessed 22 July 2026.