Evaluation methodology selection wizard
Method overview
The table below compares the characteristics of the different evaluation methods. It provides the type of output of the method and the input data required, with the aim to provide insight in the main differences between the evaluation methods.
| Evaluation method | Pros & cons | Method characteristics | Required input data | |||||||
| Pro | Con | Savings output | Aggregation level | Application (ex-ante/ex-post) | Energy use before and after actions | Number of energy saving actions | Energy saved per action | Normalisation factors | Gross-to-net adjustments | |
| Measurement | Precise | Expensive | Unitary, system or participant | Bottom-up | Ex-post only | For each system or participant | By complementary method | No, follows from method | For behaviour, temperature | E.g. non-compliance |
| Billing analysis | Easy | Too aggregated | Unitary, participant | Bottom-up and top-down | Ex-post only | For each participant | By complementary method | No, follows from method | For behaviour, temperature | E.g. free riders (in case of subsidies) |
| Deemed savings | Cheap | Imprecise | Unitary, mostly system | Bottom-up | Ex-ante and ex-post | No (covered in savings) | By complementary method | To be estimated | No (covered in method) | E.g. free riders (in case of subsidies) |
| Engineering estimate | Precise | Expensive | Unitary, complex system | Bottom-up | Ex-ante and ex-post | For each system | By complementary method | No, follows from method | No (method on normalised case) | E.g. non-compliance |
| Stock modelling | Easy calculation | A lot of data needed | Number of actions | Bottom-up | Ex-ante and ex-post | No (see deemed savings as complementary method) | From method (stock/market data > replaced equipment) | Yes, from complementary method | See deemed savings as complementary method | E.g. free riders (in number of actions) |
| Diffusion indicator | Easy | Only for uniform systems | Number of actions | Bottom-up | Ex-post only | No (see deemed savings as complementary method) | From penetration rate per year | Yes, from complementary method | See deemed savings as complementary method | E.g. free riders (in number of actions) |
| Energy indicator sector (energy intensity) | Only statistics | Aggregated (black box) | Total savings | Top-down | Ex-post only | From statistics | No (included in total savings) | No (included in total savings) | For activity level and temperature | E.g. double counting |
| Energy indicator equipment (unit consumption) | Easy (trend) | Only uniform systems | Unitary, system | Bottom-up | Ex-post only | Per average unit of equipment | By complementary method | No, follows from method | For behaviour, temperature, activity level | E.g. double counting |
| Econometric modelling (regression analysis) | Explanation of relations | Possibly missing factors | Total savings | Top-down | Ex-post only | For (sub)sector | Depends on case | Depends on case | For behaviour, temperature, activity level | No (if covered in method) |
| Econometric – Price elasticity | Simple (only price) | Situation dependent | Total savings | Top-down | Ex-ante and ex-post | For (sub)sector | No (included in total savings) | No (included in total savings) | No (method on normalised case) | E.g. double counting |