Scenario A
Replacement of a VFI type UPS system with a new, more energy-efficient model
320'127kWh
eligible kWh, accumulated over the measure's lifetime
Funding contributionCHF 16’006
Inputs: 125 kW Nennleistung, 92% gewichtete Effizienz
SFOE standard catalogue · Power Supply · Version 2.0
Replacement of Uninterruptible Power Supply (UPS) Systems
The goal is to estimate the electricity savings triggered by replacing an uninterruptible power supply (UPS) system with a new and more energy-efficient model.
Examples and Scenarios
What the measure delivers
5.0 Rp./kWh
Requirements
Only measures that meet the requirements of the Energy Ordinance (SR 730.01; EnV) can be credited. The additional requirements for the technical characteristics and for the implementation of the measure are set out in Table 1.
| Old system | New system | |
|---|---|---|
| UPS type | AC UPS system according to EN IEC 62040-3:2021 with a non-redundant rated electrical power of 50 W to 2000 kW. | |
| - | The new UPS system is of the same type as its predecessor (VFD, VI or VFI). The rated power of the new UPS system must not be higher than that of the old UPS system. The average annual load of the new UPS system is 20 percent higher than its rated electrical power. | |
| Energy efficiency | The new UPS systems must meet a weighted minimum efficiency value that corresponds to the requirements of the Elite category of the EU Code of Conduct (CoC) for the energy efficiency of UPS systems Version 2.0 of 2021 (see Table 2, Annex A1). | |
| Implementation | Planning, installation and commissioning of the new system must be carried out by a qualified specialist / company. | |
| Disposal | The consumption-relevant components of the old devices may not continue to be operated within Switzerland. Proper disposal or export must be demonstrable on request. | |
Proof of compliance
Compliance with the requirements must be demonstrated by the following documents. The documents listed in Table 2 are an integral part of the proof of measure implementation.
- 1.Proof of the installed electrical power of the devices and systems supplied by the UPS system; in addition, a measurement or estimate of the average annual load of the UPS system (PDF format)
- 2.Proof (PDF format) that the requirements for the system type and the energy efficiency according to Table 1 are met
- 3.Explanation (PDF format, max. 2 A4 pages) of how it is ensured that the replaced devices were properly disposed of (e.g. by means of declarations, disposal items on contractor invoices, etc.).
- 4.Invoice documents (PDF, PNG or JPEG format)
Calculation basics: symbols, units and formulasNot needed for the review, useful for recalculating
Symbols, Terms and Units
| Symbol | Description | Unit |
|---|---|---|
E | annual electricity consumption | kWh/a |
ΔEeco | cumulative electricity savings | kWh |
feco | reduction factor | — |
Ns | standard effective duration | a |
PUPS | rated electrical power of the UPS system | kW |
Pload | electrical power of the load | kW |
fload | average annual UPS load | — |
ε_W | weighted efficiency of the UPS system | — |
Calculation Formulas
Creditable Electricity Savings
ΔEeco = (Eold - Enew) · feco · Ns
The creditable electricity savings result from the difference between the annual electricity consumption before and after the renovation, multiplied by the reduction factor (0.75) and the standard effective duration.
Annual Electricity Consumption
Ex = (Pload · fload) / ε_W,x · 8760
The annual electricity consumption of a UPS system is calculated based on the installed power of connected loads, the average annual utilization factor, and the weighted efficiency of the UPS system.
Downloads
Documentation (PDF)Complete technical documentation including calculation basisDownload DOC
Excel Calculator (XLSX)Interactive calculation tool for savingsDownload PRO
Previous measure
First in Power Supply
Next measure
Last in Power Supply
Part of the EFFEL programme
Standardised measures are one of two measure types in the EFFEL programme (efficiency improvements by electricity suppliers, Art. 46b EnG). They follow a predefined SFOE catalogue with fixed savings values.