Trinomics stock model for chargers of mobile phones and other small devices
overview
main purpose
summary
The model was designed by Trinomics in order to simulate the stock of chargers for mobile phones and other small devices for the purpose of assessing the impact of policy measures which affect these chargers. The model addresses the two main charger components, the External Power Supply (EPS) and the (detachable) cable, and differentiates multiple versions of these based on the different power, receptacle and connector types. It covers the EU in aggregate for the period 2010-2030.
The model is a stock-flow model, which models inflows to the model based on chargers provided with sales of mobile phones and other devices, and chargers purchased separately. It also models outflows (disposals) of chargers based on assumptions of disposal rates, and also the method of disposal. These quantified flows are used to calculate the main outputs, of consumer cost, producer revenues and environmental impacts.
The model can be useful across the policy cycle, ex-ante, interim and ex-post to assess developments in the market, their impact, and the impact of potential policy options.
model type
ownership
licence
- Licence type
- Non-Free Software licence
details on model structure and approach
The model is a stock-flow model, which models inflows to the model based on chargers provided with sales of mobile phones and other devices, and chargers purchased separately. It also models outflows (disposals) of chargers based on assumptions of disposal rates, and also the method of disposal. These quantified flows are used to calculate the main outputs, of consumer cost, producer revenues and environmental impacts.
The model provides:
- A comparison sheet – which compiles the main results per policy option to generate tables and figures that can be used for the Impact Assessment report
- Sheets per device type (Smartphones, Standalone, Other_devices) where calculations and assumptions for the charger inflows associated with these devices are included for the baseline and all policy options
- Charger_adds – an interim calculation sheet which compiles per policy option the charger additions from all selected devices, the percentages for which are used in the disposal calculations
- Summary_Figs – various supporting graphical outputs
- Charger profiles – sheet where assumptions on prices, emissions and materials, per charger type, and over time are kept
- Disposals – sheet which includes the main assumptions for the modelling of disposals
- Stock sheets – one per policy option, brings the inflows, removes the outflows, calculates the stock
- Impact sheets – one per policy option, these sheets multiply the flows from the stock sheet with information from the charger profiles to calculate impacts
- Country estimates – supporting data on population
- SBSdata – data from SBS to support Economic impact calculations
- BoM Chargers – Bill of Materials data for chargers
model inputs
- Smartphone sales data (from commercial sources)
- Charger sales data (from PRODCOM)
- Charger profiles (cost, prices, weight, composition, emissions – data from various sources)
model outputs
- GHG emissions
- Material use
- E-waste
- E-waste treatment
- E-waste recycling
- Cost to consumers
- Benefit (revenue) for manufacturers and wholesalers
- Benefit for EU Manufacturers
- Manufacturing jobs in EU
- Benefit for distributors and retailers
- Wholesaler/retailer jobs in EU
- Chargers sales / disposals – per type
Additional outputs could be added if associated impacts per charger type are defined, e.g. other environmental impacts.
model spatial-temporal resolution and extent
| Parameter | Description |
|---|---|
| Spatial Extent/Country Coverage | EU Member states 27 |
| Spatial Resolution | World-regions (supranational) |
| Temporal Extent | Medium-term (5 to 15 years)Long-term (more than 15 years) |
| Temporal Resolution | Years |