Datacenters are dense microcosms of competing regulated power supplies. Every server, CPU, GPU, storage shelf, switch, and board-level voltage regulator is constantly fighting to hold its own output rails steady — 12 VDC, 5 VDC, 3.3 VDC, 1.1 VDC, whatever — despite rapidly changing compute loads and evermore imperfect upstream grid power.
The problem is threefold:
- Density / propinquity of the ‘power thorns’
Datacenters pack enormous numbers of independent switching power supplies into tight electrical proximity. Each one is a “thorn”: locally regulated, aggressively corrective, and electrically noisy. - Spikiness of the ‘power thorns’
These supplies do not draw smooth sinusoidal current. Especially where power-factor correction is partial, poorly tuned, or absent, they quickly pull sharp, pulsed, high-frequency current from the supply. The result is harmonic distortion, switching noise, reactive artifacts, and fast transient demand spikes. - Grid / PFC mismatch
The traditional AC power grid was designed around comparatively smooth and distributed primarily sinusoidal loads — motors, heaters, lighting, and ‘slower’ industrial equipment. Modern datacenters depend on “power-factor correction” (PFC) to make their switchmode power-supplies (SMPS) appear more grid-friendly, but PFC is often incomplete, imperfect, or optimized only within narrow operating ranges. Instead of eliminating the problem, it can merely reshape it: concentrating current into sharper controlled pulses, shifting distortion into harmonics, or pushing fast correction artifacts upstream. PFC reduces but does not eliminate distortion and may move noise into other frequency bands. The power-grid in some part is conceivably forced to absorb (or more likely transmit) what may amount to vast, pulse-barrages of sharp-edged, non-sinusoidal, rapidly varying power demands it was never designed to handle.
In practice, this manifests locally as “dirty electricity”: distorted waveforms, harmonics, voltage ripple, neutral currents, EMI, transformer heating, nuisance trips, and stressed distribution equipment.
At larger scales, as these pulsed loads aggregate across facilities and regions, they contribute to the rising visibility of grid instability — the everyday “power blips” now often noticed in LED lighting, sensitive electronics, and other fast-reacting devices.
People everywhere are noting the changes, power-blips, etc, and at least one power measurement company has already blown the whistle, reporting a single Datacenter in Ashburn, Virginia caused measured ripple effects throughout substantial portions of the US power-grid.
Electrical Gluttony. Water Consumption. Noise Pollution. Ground Vibration. Powerline Harmonics. Exploring the Web of Land-Grabby, Depopulative, Anti-Meat, Anti-Farm and Anti-Human Incessant Toxic Badness.
Sourced Series deeply explores the Many Serious Ill-Effects of Datacenters.
Every statement is sourced by scientific studies, published anecdotes, harmed victims.
Learn from others’ mistakes, or suffer similarly.
“A 2026 power-engineering study found that hyperscale data centers behave not merely as electrical loads, but as vast power-electronics systems whose rapidly fluctuating server demands can excite grid oscillations and propagate disturbances across interconnected networks. Far from a fringe “dirty electricity” claim, the research suggests data centers may interact with the power grid in ways fundamentally different from traditional industrial facilities, raising serious new concerns about resonance, stability, reliability.”
High-frequency harmonics comprise toxic, “dirty power”
Below are engineering-established sources first, then health / epidemiology, then Milham / dirty-electricity contested claims. Important: harmonics/PFC “dirty power” harms equipment very clearly; biological harm claims are much more contested.
Engineering: PFC, harmonics, power quality
- IEEE Std 519 — harmonic limits / power-system harmonic control
https://standards.ieee.org/ieee/519/1066/ - IEEE Std 1159 — power-quality monitoring
https://standards.ieee.org/ieee/1159/5298/ - IEC 61000-3-2 — harmonic current emissions, ≤16 A equipment
https://webstore.iec.ch/en/publication/4150 - IEC 61000-3-12 — harmonic emissions, 16–75 A equipment
https://webstore.iec.ch/en/publication/4151 - IEC 61000-4-30 — power-quality measurement methods
https://webstore.iec.ch/en/publication/21844 - EN 50160 — voltage characteristics of public distribution systems
https://standards.iteh.ai/catalog/standards/cenelec/9f883575-5019-4e41-bb0f-77aebc70c39a/en-50160-2022 - Bollen, Understanding Power Quality Problems — IEEE Press / Wiley
https://ieeexplore.ieee.org/book/5264253 - Dugan et al., Electrical Power Systems Quality
https://www.accessengineeringlibrary.com/content/book/9780071761550 - Arrillaga & Watson, Power System Harmonics
https://onlinelibrary.wiley.com/doi/book/10.1002/0470871229 - Singh et al., “A review of three-phase improved power quality AC-DC converters”
https://doi.org/10.1109/TIE.2003.810942 - Akagi et al., instantaneous reactive power / active filtering foundations
https://doi.org/10.1109/TIA.1984.4504460 - IEEE paper: “Power factor, harmonic distortion; causes, effects and considerations”
https://doi.org/10.1109/INTLEC.1992.268395 - DOE / Berkeley Lab — Power Quality Primer
https://eta.lbl.gov/publications/power-quality-primer
Health / biological effects: ELF fields, power lines, leukemia
- IARC Monographs Vol. 80 — ELF electric/magnetic fields classified “possibly carcinogenic”
https://publications.iarc.fr/98 - WHO Environmental Health Criteria 238 — Extremely Low Frequency Fields
https://www.who.int/publications/i/item/9789241572385 - NIEHS EMF RAPID report / EMF health review
https://www.niehs.nih.gov/health/topics/agents/emf - National Academies — Possible Health Effects of Exposure to Residential Electric and Magnetic Fields
https://nap.nationalacademies.org/catalog/5155/possible-health-effects-of-exposure-to-residential-electric-and-magnetic-fields - Wertheimer & Leeper, 1979 — early childhood cancer / wiring configuration paper
https://doi.org/10.1093/oxfordjournals.aje.a112681 - Savitz et al., 1988 — childhood cancer and electromagnetic fields
https://doi.org/10.1093/aje/128.1.21 - Ahlbom et al., 2000 — pooled analysis: magnetic fields and childhood leukemia
https://doi.org/10.1054/bjoc.2000.1376 - Greenland et al., 2000 — pooled analysis of magnetic fields and childhood leukemia
https://doi.org/10.1097/00001648-200009000-00003 - Draper et al., 2005 BMJ — childhood cancer near high-voltage power lines
https://doi.org/10.1136/bmj.330.7503.1290 - Kheifets et al., 2010 — pooled analysis of recent childhood leukemia / ELF-MF studies
https://doi.org/10.1038/sj.bjc.6605838 - Schüz, 2011 — exposure to ELF magnetic fields and childhood leukemia review
https://doi.org/10.1186/1476-069X-10-S1-S5 - SCENIHR / European Commission — health effects of EMF scientific opinion
https://health.ec.europa.eu/publications/potential-health-effects-exposure-electromagnetic-fields-emf_en
“Dirty electricity” / high-frequency voltage transients — contested but relevant
- Milham & Morgan, 2008 — high-frequency voltage transients and cancer incidence in teachers
https://doi.org/10.1002/ajim.20598 - Milham, Dirty Electricity: Electrification and the Diseases of Civilization
https://www.amazon.com/Dirty-Electricity-Electrification-Diseases-Civilization/dp/193890818X - Milham, 2010, Medical Hypotheses — electrification disease hypothesis
https://doi.org/10.1016/j.mehy.2009.08.032 - Havas, 2006 — electromagnetic hypersensitivity / dirty electricity review claims
https://doi.org/10.3109/15368370601044192 - Havas & Olstad, 2008 — Graham/Stetzer filters and school symptoms study
https://doi.org/10.1016/j.scitotenv.2007.12.030 - Havas, 2010 — dirty electricity and blood sugar claim
https://doi.org/10.3109/15368378.2010.494902 - Electromagnetic Biology and Medicine journal — broader EMF biological-effects literature
https://www.tandfonline.com/journals/iebm20
Power-line harmonics, high dV/dt pulses, poor PFC, and nonlinear loads are unquestionably power-quality problems. Childhood leukemia associations with ELF magnetic fields are epidemiologically observed but weak/contested; “dirty electricity” health claims are more speculative and not consensus.
Power-Grid Electrical “Grounding” / “Earthing”
The 60 Hertz (cycles-per-second) Power Grid Frequency
Curiously, in ongoing research now spanning decades, it has proven impossible to locate a single, original source of the 60 cycles-per-second (Hertz) experiments, design decision-tree, or any documentation whatsoever. The 60 Hertz standard appears to have manifested out of de-factosis.
Hertz is the unit’s namesake; 60 cycles/second became a North American engineering convention through Westinghouse/Tesla-era AC practice, generator/motor/transformer/lamp tradeoffs, utility consolidation, and later AIEE/NEMA/ANSI/IEEE-style standardization. No single body “proved it best” universally; it won as a practical compromise and network-effect standard.
Quality sources:
- IEEE ETHW — Alternating Current Electrification, 1886–1895
https://ethw.org/Alternating_Current_Electrification,_1886-1895 - IEEE ETHW — War of the Currents
https://ethw.org/War_of_the_Currents - IEEE ETHW — Niagara Falls Power Project
https://ethw.org/Niagara_Falls_Power_Project - Thomas P. Hughes, Networks of Power — foundational grid-history book
https://archive.org/details/networksofpowere0000hugh - IEEE Std 519 — harmonic control in electric power systems
https://standards.ieee.org/ieee/519/1066/ - IEEE Std 1159 — power-quality monitoring
https://standards.ieee.org/ieee/1159/5298/ - IEC 61000-3-2 — harmonic current emissions limits
https://webstore.iec.ch/en/publication/4150 - IEC 61000-3-12 — harmonic limits for larger equipment
https://webstore.iec.ch/en/publication/4151 - IEC 61000-4-30 — power-quality measurement methods
https://webstore.iec.ch/en/publication/21844 - EN 50160 — public distribution voltage characteristics
https://standards.iteh.ai/catalog/standards/cenelec/9f883575-5019-4e41-bb0f-77aebc70c39a/en-50160-2022 - NERC reliability standards — North American bulk grid frequency/reliability framework
https://www.nerc.com/pa/Stand/Pages/ReliabilityStandards.aspx - DOE / Berkeley Lab power-quality overview
https://eta.lbl.gov/publications/power-quality-primer - IEEE paper: Power factor, harmonic distortion; causes, effects and considerations
https://doi.org/10.1109/INTLEC.1992.268395 - IEEE paper: Environmental considerations concerning biological effects of power-frequency 50/60 Hz electric fields
https://doi.org/10.1109/TPAS.1978.354452 - NIST SI definition/history of hertz as unit
https://www.nist.gov/pml/owm/metric-si/si-units
Summary:
The 60 Hz North American grid frequency was not scientifically “discovered” as optimal (which means it could just as soon be partly or entirely toxic). It emerged from late-19th-century AC engineering practice, especially Westinghouse/Tesla systems, as a workable compromise among transformer efficiency, generator design, induction-motor behavior, lighting flicker, and transmission economics. Competing frequencies — 25 Hz, 40 Hz, 50 Hz, 60 Hz, 125 Hz, and others — coexisted for years. As grids interconnected, standardization pressure favored one dominant utility frequency; in North America that became 60 Hz, while much of Europe standardized around 50 Hz.
Power-Grid Engineering for Resilience
- Delta vs wye matters. Transformer winding choices affect grounding, zero-sequence currents, harmonics, fault behavior, neutral currents, and surge paths.
- Delta windings can suppress/trap some zero-sequence and triplen harmonics. That is standard power engineering, not fringe.
- Wye-wye systems require careful grounding/design. Improperly designed wye-wye banks can have neutral shift, harmonics, ferroresonance, grounding/fault-current
complications, and overvoltage issues. - Multi-grounded neutrals do create earth/neutral current paths. Stray voltage/current issues are real, especially in rural/agricultural systems.
- Power-quality pollution is real. Nonlinear loads, harmonics, switching supplies, poor PFC, and neutral currents can cause measurable electrical noise.
- GMD/EMP/lightning vulnerabilities are real grid-engineering topics. NERC/FERC/EPRI all treat geomagnetic disturbance and high-impact low-frequency events seriously.
- Adding neutrals / converting delta to grounded-wye can happen locally. Utilities sometimes modernize feeders, add grounded-wye service, or reconfigure systems for safety,
load compatibility, protection coordination, and standardization.
3-phase 4-wire / grounded-wye / multi-grounded neutral
- IEEE C2 / NESC — National Electrical Safety Code
https://standards.ieee.org/ieee/C2/10789/ - USDA RUS Electric Program Bulletins — distribution-line construction standards
https://www.rd.usda.gov/resources/regulations/bulletins/electric - IEEE PES Distribution Test Feeders — includes 4-wire multi-grounded neutral distribution models
https://cmte.ieee.org/pes-testfeeders/resources/ - Kersting, Distribution System Modeling and Analysis
https://www.routledge.com/Distribution-System-Modeling-and-Analysis/Kersting/p/book/9781439856222 - Short, Electric Power Distribution Handbook
https://www.routledge.com/Electric-Power-Distribution-Handbook/Short/p/book/9781138073515 - EPRI OpenDSS — distribution-system modeling incl. multi-grounded neutral / 4-wire feeders
https://sourceforge.net/projects/electricdss/
Transformer connections: delta, wye, wye-wye, grounding
- IEEE C57.105 — Guide for Application of Transformer Connections in Three-Phase Electrical Systems
https://standards.ieee.org/ieee/C57.105/1020/ - IEEE C57 series — transformer standards collection
https://standards.ieee.org/standard/C57.html - IEEE Std 142 “Green Book” — grounding of industrial/commercial power systems
https://standards.ieee.org/ieee/142/1721/ - IEEE Std 242 “Buff Book” — protection/coordination of industrial/commercial power systems
https://standards.ieee.org/ieee/242/1653/ - IEEE Std 32 — neutral grounding devices
https://standards.ieee.org/ieee/32/1064/ - Westinghouse, Electrical Transmission and Distribution Reference Book
https://archive.org/details/electricaltransm00west - IEC 60076 — power transformer standards
https://webstore.iec.ch/en/publication/604
Zero-sequence, harmonics, grounding, neutral currents
- Fortescue, 1918 — “Method of Symmetrical Co-Ordinates Applied to the Solution of Polyphase Networks”
https://doi.org/10.1109/T-AIEE.1918.4765570 - IEEE Std 519 — harmonic control in electric power systems
https://standards.ieee.org/ieee/519/1066/ - IEC 61000-3-2 — harmonic current emissions
https://webstore.iec.ch/en/publication/4150 - IEC 61000-3-12 — harmonic current limits for larger equipment
https://webstore.iec.ch/en/publication/4151 - Arrillaga & Watson, Power System Harmonics
https://onlinelibrary.wiley.com/doi/book/10.1002/0470871229 - Dugan et al., Electrical Power Systems Quality
https://www.accessengineeringlibrary.com/content/book/9780071761550 - Bollen, Understanding Power Quality Problems
https://ieeexplore.ieee.org/book/5264253
Ground wires, shielding, lightning, substations
- IEEE Std 80 — substation grounding
https://standards.ieee.org/ieee/80/1045/ - IEEE Std 81 — measuring earth resistivity / grounding impedance
https://standards.ieee.org/ieee/81/1023/ - IEEE Std 998 — direct lightning stroke shielding of substations
https://standards.ieee.org/ieee/998/1016/ - IEEE Std 1243 — lightning performance of transmission lines
https://standards.ieee.org/ieee/1243/1043/ - IEEE Std 1410 — lightning performance of distribution lines
https://standards.ieee.org/ieee/1410/1068/
GMD / EMP / large-scale grid vulnerability
- NERC TPL-007 — geomagnetic disturbance planning standard
https://www.nerc.com/pa/Stand/Pages/TPL007.aspx - FERC Order 779 — reliability standards for geomagnetic disturbances
https://www.ferc.gov/media/order-no-779 - FERC Order 830 — GMD reliability standard approval
https://www.ferc.gov/media/order-no-830 - EPRI — EMP / HEMP grid impact research
https://www.epri.com/research/products/000000003002010816 - NOAA Space Weather Prediction Center — geomagnetic storm / grid impacts
https://www.swpc.noaa.gov/impacts/electric-power-transmission - NERC GMD Task Force materials
https://www.nerc.com/pa/Stand/Pages/Geomagnetic-Disturbance-Task-Force.aspx