What Percentage of a Monitor’s Lifetime Energy Use Happens During Manufacturing?

There is no single percentage for every monitor. Manufacturing tends to take a larger share on efficient, long-lived displays, while years of electricity use often take the larger share on bright gaming, ultrawide, and HDR models.

You run into this when two displays seem similar on a store page, but one is a basic 24-inch monitor and the other is a 34-inch ultrawide at 144Hz. Real examples range from about 20W in a dim 60Hz mode to 139W average on a high-end 4K gaming display, which is enough to flip the lifetime energy balance from factory-heavy to use-heavy. The sections below show how to judge that tradeoff before you buy.

What “lifetime energy” means for a monitor

Embodied energy covers the energy used before a monitor ever reaches your desk, including raw material extraction, manufacturing, transport, and related support activities. For a display, that means the panel, backlight or OLED stack, controller boards, power supply, stand, housing, packaging, and shipping all matter, not just the watts you see on the spec sheet.

Life cycle assessment looks at the full chain from materials to use to end-of-life, which is the right frame for comparing monitors, gaming monitors, ultrawides, and portable displays. That matters because a low-power monitor can still carry a meaningful factory energy burden, while a high-brightness, high-refresh model can keep adding electricity use year after year.

Why there is no universal manufacturing percentage

Embodied energy calculations are complex, so there is no credible one-size-fits-all percentage for monitors. Standardized active-use figures show why: one efficient display class can land around 11.7 kWh per year, while a less efficient class can reach about 59.4 kWh per year at 4 hours of use per day. Over 8 years, that is roughly 94 kWh versus 475 kWh in operation alone, so the same manufacturing burden would represent a very different share of lifetime energy in each case.

Upstream supply chains can account for 40% to 60% of a manufacturer’s total energy and carbon footprint, which is a reminder that monitor energy use starts well before final assembly. Materials matter here: primary aluminum is especially energy-intensive, at about 99 kWh per kilogram, so even a roughly 1 lb aluminum-heavy part can represent around 45 kWh before assembly, while recycled aluminum cuts that burden sharply.

Aluminum and ABS plastic do not carry the same embodied-energy profile, and recycling changes the equation again. For monitor buyers, that means premium metal stands and housings are not automatically better or worse; the real question is whether the monitor lasts long enough, uses recycled content, and avoids early replacement.

When use-phase electricity starts to dominate

Higher refresh rates, larger sizes, higher resolutions, and brighter HDR modes all push monitor power upward. Practical examples put a 27-inch 144Hz monitor around 30W to 50W and a 27-inch 240Hz model around 30W to 80W, with brightness often acting as the biggest driver. That means a gaming monitor can add roughly 44 to 117 kWh per year at 4 hours per day, before you even get into extreme HDR behavior.

Real-world monitor testing shows how sharply settings can change the balance. One 34-inch ultrawide moved from 20W at 60Hz in a dim mode to 24.3W at 144Hz, then all the way to 57.2W in a brighter movie mode, while a 4K 144Hz HDR gaming display was reported at 139W average. Over a normal ownership cycle, that kind of power draw can push lifetime energy toward the wall outlet rather than the factory.

How monitor type shifts the balance

Active energy use varies widely across monitor categories, so the manufacturing share changes with the product type and how you use it. The table below is not a full LCA; it is a buying guide view that combines published operating-power examples with lifecycle logic.

Larger and brighter monitors generally use more electricity in operation, so portable monitors and modest office displays usually lean more factory-heavy than ultrawide or flagship gaming panels. The practical takeaway is simple: the more inches, nits, refresh rate, local dimming, and HDR intensity you buy, the harder it is for manufacturing to remain the main share of lifetime energy.

What buyers can do to lower total lifetime energy

Designing for long life, reuse, and recycled content is one of the strongest ways to cut a monitor’s total energy impact. For a buyer, that means keeping a good display longer, avoiding upgrades you will not notice day to day, and favoring models with credible energy-efficiency labeling, durable stands, and a realistic chance of resale or hand-me-down use.

Brightness is one of the biggest drivers of monitor electricity use, so settings matter almost as much as the product choice. If you do not need maximum HDR or showroom brightness, running a gaming monitor at saner brightness levels, disabling HDR outside movies and games, and using standby or fully switching the monitor off can materially reduce the use-phase share.

Recycled aluminum can use about 95% less energy than primary aluminum, which is why build quality and materials should be read more carefully than “metal equals premium.” A monitor that mixes recycled materials, moderate power draw, and a long service life will usually beat a flashy replacement cycle, even if the new model looks more efficient on paper.

FAQ

Q: Is manufacturing usually more than 50% of a monitor’s lifetime energy use?

A: Not as a universal rule. It is most plausible for efficient monitors, portable displays, or lightly used office screens with low yearly electricity use. For bright, high-refresh, HDR-heavy gaming monitors, the use phase often becomes the larger share.

Q: Do high-refresh-rate monitors raise lifetime energy mostly through use or through manufacturing?

A: Mostly through use. The clearest evidence in the notes is higher operating power from refresh rate, brightness, resolution, and HDR. Manufacturing may also rise with more complex components, but the strongest published numbers here are on electricity use during ownership.

Q: What single buying choice usually helps the most?

A: Keep the monitor longer. Stretching replacement cycles avoids repeating the factory energy cost, and it gives you more years to benefit from any efficient settings or lower-power operation.

Final Takeaway

Lifecycle hotspots often sit outside the factory gate, and monitors are a good example. If you buy a smaller, efficient display and keep it for years, manufacturing can remain a major part of its lifetime energy story. If you buy a big ultrawide or high-end gaming monitor with high brightness, HDR, and fast refresh, daily electricity use is much more likely to dominate.

The best buying rule is to match the monitor to the work you actually do: buy only as much size, brightness, and refresh rate as you will really use, then keep the display long enough for that choice to pay off.

References

• a platform: Embodied energy
• a company: Life cycle assessment
• a platform: Life cycle assessment and energy savings
• a platform: Embodied energy of electronic enclosure materials
• a company: Monitor energy consumption
• a company: High-refresh-rate monitor power consumption
• a platform: Monitor power consumption examples