Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Colocation power quotes usually combine two different ideas: capacity reserved for your equipment and energy actually consumed over time. A committed-power charge reserves a stated kW or kVA level and can remain payable when your servers draw less. Metered billing prices measured consumption, commonly in kWh, but may still include a capacity fee. Burstable power permits temporary draw above the reservation only within limits written into the order and governing agreement.
Because these labels are not standardized plan names, the words alone do not tell you the price, meter interval, burst ceiling, or penalty for exceeding a limit. Compare the units, measurement method, minimums, overage formula, redundancy and electrical constraints in each quote.
As an Amazon Associate I earn from qualifying purchases.
What committed, metered and burstable power actually describe
Providers use these terms as shorthand for billing and capacity arrangements, and they can be combined. A service can reserve capacity, meter energy and allow bursts at the same time. Treat the contract, service order and facility rules—not the marketing label—as the binding definition.
Committed or reserved capacity
With a commitment, you agree to pay for a specified IT-load capacity for a billing period or contract term. The reservation helps the facility plan electrical infrastructure and gives you a predictable recurring charge. The trade-off is paying for headroom that sits idle.
#1 Best Overall
- 【360° Rotating Mounting Brackets】 – Innovative 360-degree rotating brackets enable flexible installation on server racks, walls, desks, and furniture. This 1U PDU mounts horizontally in any standard 19-inch server rack, delivering versatile power distribution for data centers, network cabinets, and audio-visual setups.
- 【7-Outlet 1U Rackmount PDU】 – Designed for standard 19-inch server racks, this 1U rack mount power strip provides 7 outlets with 15A/125V/1875W capacity. Ideal for powering servers, switches, routers, and networking equipment in professional IT environments.
- 【Real-Time Power Monitoring & Overload Protection】 – Built-in digital display provides real-time voltage and current readings for precise power management. The 15A overload protection switch automatically trips when current exceeds safe limits—circuit breaker responds only to overload conditions, not accidental wire contact, ensuring reliable, uninterrupted operation.
- 【Heavy-Duty Metal Housing & 14AWG Cord】 – Constructed with rugged, industrial-grade metal housing for maximum durability in demanding environments. Features a 14AWG heavy-duty 6.5FT power cord delivering stable, consistent power delivery for high-demand server rooms and industrial settings.
- 【1U Rackmount with Cable Management】 – Occupies just 1U of rack space, maximizing valuable server rack real estate. Includes mounting brackets for horizontal installation in standard 19-inch racks, with a streamlined design that simplifies cable management and maintains a clean, organized network cabinet.
Ark describes a fixed monthly fee for each reserved kilowatt. A separate SEC-filed colocation agreement illustrates a take-or-pay structure in which the fee is due on contracted IT load regardless of actual utilization or draw. That filing is an example of negotiated language, not a universal rule. Your order should state whether the commitment is measured in kW or kVA, the minimum level, the term, and whether unused capacity can be reduced or released.
Metered usage
Metered billing uses readings from a provider-designated meter and applies the contract’s rate and calculation rules to actual use. Energy is commonly expressed in kilowatt-hours (kWh), but a provider may also measure demand in kW, reserve capacity separately, or apply both charges.
Ark’s flexible-commit description combines a fixed fee for reserved capacity with a monthly charge for actual power in kWh. Spectrum’s colocation addendum presents a choice between a fixed recurring charge and metered billing based on actual use. Therefore, “metered” does not automatically mean that no capacity fee or minimum applies.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Burstable power
A burst allowance lets equipment draw above its committed level for a defined period or under defined operating conditions. Ark says customers can burst as needed while noting that restrictions apply. The phrase does not disclose the permitted peak, duration, frequency, price, or whether the additional power is guaranteed.
Rank #2
- 20a single phase 120V Metered power distribution unit/ PDU (agency de-rated to 16a continuous)
- Built-in 2 digit Visual meter continuously reports PDU load level in Amps
- Attached NEMA L5-20P 20a 120V input Plug with 15 ft./ 4.5m line cord
- 12 NEMA 5-15/20R outlets
- 2-Year limited warranty
Require the provider to specify the burst ceiling, the averaging or sampling method, the overage rate, and the operational response if the ceiling is exceeded. A burst may be billable, throttled, treated as a service violation, or accepted only when spare facility capacity exists.
Capacity, demand and energy are different quantities
kW: real power and load
Kilowatts (kW) describe real electrical power delivered to and consumed by equipment at an instant. A committed IT-load figure in kW is a capacity or demand limit, not an amount of energy used during a month.
kVA: apparent power and circuit capability
Kilovolt-amperes (kVA) describe apparent power, which combines voltage and current. The relationship between kW and kVA depends on power factor. Equinix documentation defines a contractual Draw Cap in kVA and notes that circuit ratings and allowable draw vary by region. Do not convert a quoted kVA limit to an equal kW allowance without the applicable power-factor assumption.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minutekWh: energy over time
Kilowatt-hours (kWh) measure accumulated energy. A one-kilowatt load running continuously for one hour uses one kWh; the invoice calculation depends on the meter’s interval, rate and rounding rules. A capacity reservation in kW or kVA and energy consumption in kWh answer different questions and may both appear on one invoice.
Rank #3
- 8-OUTLET 1U RACK MOUNTED METERED PDU: 8x NEMA 5-15R power outlets; 125V max and 15A circuit breaker; Built-in 8ft (2.4m) NEMA 5-15P power cord; Ideal power supply strip for 19" racks in server rooms/closets, data center, and testing labs
- METERED POWER DISTRIBUTION UNIT: Large-font display with optional backlight for real-time monitoring of key power parameters: voltage (V), current (A), wattage (W), and power factor (PF), which indicates the efficiency of the connected devices
- SURGE PROTECTOR: Self-tripping MOV design with mechanical trigger instantly cuts power during surges to protect connected devices; Includes LED status indicator, resettable 15A circuit breaker, and safety cover to prevent accidental resets
- RACK MOUNTABLE: 1U horizontal rackmount PDU for EIA-310-compliant 19-inch server racks/cabinets that are 4in (10.1cm) or deeper; Made of cold-rolled steel w/textured finish for sturdiness & long-lasting durability; 6x rear and 2x front electrical outlets
Redundant feeds and usable capacity
Two feeds or circuits do not necessarily let you combine both nameplate ratings as usable customer capacity. Equinix describes delivery through redundant pairs and explains that the usable amount is determined by the deployment’s design. The facility’s electrical topology and service order control whether a rating is per feed, per cabinet, or an aggregate cap across circuits.
How the models can appear on an invoice
| Arrangement | Capacity line | Usage line | What must be confirmed |
|---|---|---|---|
| Fixed commitment | Recurring charge for reserved kW or kVA | Included, separately billed, or not stated | Take-or-pay language, minimum term, reduction rights and included energy |
| Metered with reservation | Fixed fee for reserved capacity | Measured kWh, and sometimes measured demand | Meter authority, interval, rate, rounding, minimum bill and pass-throughs |
| Metered without stated reservation | Not stated unless the quote adds one | Actual measured use under the provider’s tariff | Minimum charge, demand component, included circuits and capacity availability |
| Burstable commitment | Base reservation plus any burst-related charge | Measured according to the burst rule | Peak cap, duration, frequency, guarantee, overage formula and enforcement |
Published prices were not stated in the provider examples available for these models. Obtain the current facility quote and governing agreement before comparing total cost.
Compare two colocation quotes on the same axes
- Normalize the capacity commitment. Record contracted IT load, reserved kW or kVA, minimums, escalation, term and the charge that applies when actual draw is low. Identify whether the number is per rack, per circuit, per deployment or an aggregate limit.
- Document the meter. Ask which device is authoritative, where it sits in the electrical path, whether readings are in kW, kVA or kWh, and the sampling, averaging and billing intervals. Confirm rounding, estimated readings, correction procedures and how customers receive raw data.
- Write down burst conditions. Capture the maximum draw, permitted duration, frequency or duty cycle, notice requirement, availability guarantee, price and the action taken after an overage. “As needed” is not a measurable allowance.
- Separate energy and adjustments. Determine what energy is included, the kWh or demand rate, utility and regulatory pass-throughs, taxes, fuel or sustainability surcharges, annual escalators and one-time connection fees.
- Check electrical constraints. Match voltage, phase, receptacle, fuse or breaker rating, circuit topology, power factor treatment and regional limits to your equipment. Ask whether the stated capacity is usable after redundancy rather than the sum of nameplate ratings.
- Model your load profile. Use expected average, normal peak, startup or inrush current, seasonal variation and growth. Compare the cost of reserving headroom with the financial and operational impact of an overage.
A practical way to size a commitment
Inventory the equipment
List every server, storage chassis, network device and auxiliary load in the cabinet. Record manufacturer ratings, measured draw where available, power supplies per feed and any equipment that can start simultaneously. Nameplate watts are a screening figure, not proof of actual consumption.
Recommended Free Tools
Build average and peak cases
Create at least an average operating case and a credible peak case. Include replication, backup windows, accelerator workloads, cooling or fan changes and hardware additions during the contract term. Keep capacity units separate from energy units: a peak kW or kVA requirement determines the reservation, while the time profile drives kWh charges.
Rank #4
- 12-OUTLET 1U RACK MOUNTED METERED PDU: 12x NEMA 5-15R power outlets; 125V max and 15A circuit breaker; Built-in 8ft (2.4m) NEMA 5-15P power cord; Ideal power supply strip for 19" racks in server rooms/closets, data center, and testing labs
- METERED POWER DISTRIBUTION UNIT: Large-font display with optional backlight for real-time monitoring of key power parameters: voltage (V), current (A), wattage (W), and power factor (PF), which indicates the efficiency of the connected devices
- SURGE PROTECTOR: Self-tripping MOV design with mechanical trigger instantly cuts power during surges to protect connected devices; Includes LED status indicator, resettable 15A circuit breaker, and safety cover to prevent accidental resets
- RACK MOUNTABLE: 1U horizontal rackmount PDU for EIA-310-compliant 19-inch server racks/cabinets that are 4in (10.1cm) or deeper; Made of cold-rolled steel w/textured finish for sturdiness & long-lasting durability; 10x rear and 2x front electrical outlets
Apply the facility’s redundancy rule
Determine whether the deployment is single-corded, dual-corded with independent A and B paths, or subject to a shared Draw Cap. Ask the provider to show the calculation in the service order. Do not assume that two 10 kVA feeds provide 20 kVA of usable customer draw when the facility protects one path against failure.
Add growth without hiding it in a burst clause
Reserve only the capacity you can justify, but identify when growth will require an amendment, new circuit or cabinet. A temporary burst can cover a short workload spike; it is not a substitute for guaranteed capacity when the higher load is sustained.
What a burst clause should answer
- Ceiling: Is the limit an absolute kW or kVA cap, a percentage above commitment, or spare capacity available at the provider’s discretion?
- Time rule: Is the reading instantaneous, a rolling average, a fixed interval maximum or a monthly percentile?
- Frequency: May bursts occur continuously, for a set number of hours, or only occasionally?
- Price: Is excess energy charged at a kWh rate, excess demand at a kW or kVA rate, a fixed fee, or a negotiated schedule?
- Guarantee: Is burst capacity reserved for you, or can it disappear when another customer uses the facility’s headroom?
- Enforcement: What warning, throttle, disconnect, remediation fee or contract remedy follows a breach?
- Telemetry: Which meter proves the overage, and can you inspect the readings and timestamps?
Do not confuse electrical bursting with 95th-percentile burstable network bandwidth. Network billing measures traffic rate; it does not define an electrical-power allowance.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Metering, audits and customer-side monitoring
Ask for a sample bill and a sample meter report before signing. The documents should let you reconcile opening and closing readings, interval data, rates, capacity fees, taxes and adjustments. Clarify whether the provider can revise an invoice after a faulty meter, and how disputes pause or do not pause payment.
Best Value
- POWER AND CHARGE: This rack mount power strip provides an additional 8 NEMA 5-15 outlets (120V/15A) and features a 6ft (1,8m) long cord so you can plug your devices in while leaving the rack mobile
- 1U RACK DESIGN: Compatible with all 19" server racks 4 inches or deeper, this horizontal-mount power distribution unit fits many network racks and has an integrated power cord; ANSI/EIA RS-310-D standard
- EASY INSTALLATION: This IT-grade rackmount PDU features a rugged steel chassis, LED indicators for ground and surge protection, and lets you control the power state with power and reset switches
- PROTECTS YOUR EQUIPMENT: This rack mountable 8-outlet (120V) power strip features a built-in circuit breaker and reset switch, ensuring a dependable performance of your networking equipment
- THE IT PRO'S CHOICE: Designed and built for IT Professionals, this rack PDU is backed for 2-Years, including free lifetime 24/5 multi-lingual technical assistance
A metered rack PDU can help you observe cabinet draw and establish a load profile. QuickHost describes monitoring and recording draw through rack PDUs. That reading is a planning aid, not automatically the provider’s billable measurement. Spectrum’s addendum says power strips with additional functionality require advance approval. Confirm approved equipment, voltage, receptacle type, phase, amperage, environmental rating and A/B redundancy before installing a customer-owned PDU.
Three contract scenarios
Low utilization under a fixed reservation
Your equipment averages well below the contracted IT load. Under a take-or-pay commitment, the capacity fee still applies because you purchased availability rather than only consumed energy. A reduction or true-down right, if any, must be written into the order.
Variable workload with metered energy
Your load changes sharply between ordinary and batch-processing periods. A metered arrangement may track the resulting kWh, but a separate reserved-capacity fee or demand charge can remain. The economic result depends on the rate, interval and minimum—not on the word “metered.”
Sustained growth presented as bursting
A workload stays above the base commitment for weeks. If the burst clause is intended for temporary peaks, the provider may bill overage, require a capacity increase or treat the pattern as a breach. Obtain a permanent capacity amendment before the higher load becomes normal.
Common mistakes and how to prevent them
- Comparing unlike units: Put kW, kVA and kWh in separate columns and record the power-factor assumption.
- Assuming metered means pay-as-you-go: Look for capacity fees, minimums, demand charges and pass-through costs.
- Treating a burst promise as guaranteed: Require a numeric ceiling, time rule and remedy in the contract.
- Adding redundant circuit ratings: Ask how the facility calculates usable power during a feed failure.
- Using a private PDU as the billing meter: Reconcile it with the provider’s designated meter and obtain equipment approval.
- Ignoring startup and growth: Include inrush, planned hardware and future workload in the capacity request.
- Relying on a marketing page: Make the service order and governing terms control conflicting descriptions.
Questions to ask before signing
- What exact capacity is reserved, in which unit, and at what point in the electrical path?
- Is the recurring charge payable when actual draw is zero or below the reservation?
- Which meter is authoritative, and what are its interval, averaging, rounding and correction rules?
- Are energy, demand, taxes, utility adjustments and regulatory charges included or separate?
- What peak can be drawn above commitment, for how long and how often?
- Is burst capacity guaranteed, and what rate or remedy applies when it is unavailable or exceeded?
- How are redundant circuits and power factor treated in the usable-capacity calculation?
- Can I receive interval data and challenge a reading or invoice?
- What customer-owned monitoring equipment is approved for this voltage, phase, receptacle and redundancy design?
- How are capacity increases, reductions, relocations and early termination priced?
Bottom line for choosing a billing model
Choose a fixed commitment when predictable capacity and a stable load justify paying for reservation. Choose metered treatment when your usage varies and the agreement’s measurement and minimum-charge rules produce a credible saving. Use burstable capacity only when the ceiling, duration, price, guarantee and enforcement are explicit. Before comparing offers, translate every line into reserved capacity, measured energy, electrical constraints and total charges over your expected load profile.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
