eemeter 4.1.1

Open Energy Efficiency Meter

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EEmeter — an open source python library for creating standardized models for predicting energy usage. These models are often used to calculate energy savings post demand side intervention (such as energy efficiency projects or demand response events).

Background - why use the EEMeter library

OpenEEmeter, as implemented in the eemeter package and sibling eeweather package builds upon the foundation of the CalTRACK Methods to provide free, open-source modeling tools to anyone seeking to model energy building usage. Eemeter models have been developed to meet or exceed the predictive capability of the CalTRACK models. These models adhere to a statistical approach, as opposed to an engineering approach, so that these models can be efficiently run on millions of meters at a time, while still providing accurate predictions.

Using default settings in eemeter will provide accurate and stable model predictions suitable for savings measurements from demand side interventions. Settings can be modified for research and development purposes, although the outputs of such models may no longer be an officially recognized measurement as these models have been verified by the OpenEEmeter Working Group.

Note

Please keep in mind that use of the OpenEEmeter is neither necessary nor sufficient for compliance with the CalTRACK method specification. For example, while the CalTRACK methods set specific hard limits for the purpose of standardization and consistency, the EEmeter library can be configured to edit or entirely ignore those limits. This is becuase the emeter package is used not only for compliance with, but also for development of the CalTRACK methods.

Please also keep in mind that the EEmeter assumes that certain data cleaning tasks specified in the CalTRACK methods have occurred prior to usage with the eemeter. The package proactively exposes warnings to point out issues of this nature where possible.

Installation

EEmeter is a python package and can be installed with pip.

$ pip install eemeter

Features

• Models:

  • Energy Efficiency Daily Model

  • Energy Efficiency Billing (Monthly) Model

  • Energy Efficiency Hourly Model

  • Demand Response Hourly Model

• Flexible sources of temperature data. See EEweather.

• Data sufficiency checking

• Model serialization

• First-class warnings reporting

• Pandas dataframe support

• Visualization tools

Documentation

Documenation for this library can be found here. Additionally, within the repository, the scripts directory contains Jupyter Notebooks, which function as interactive examples.

Roadmap for 2024 development

The OpenEEmeter project growth goals for the year fall into two categories:

1. Community goals - we want help our community thrive and continue to grow.

2. Technical goals - we want to keep building the library in new ways that make it as easy as possible to use.

Community goals

1. Develop project documentation and tutorials

A number of users have expressed how hard it is to get started when tutorials are out of date. We will dedicate time and energy this year to help create high quality tutorials that build upon the API documentation and existing tutorials.

2. Make it easier to contribute

As our user base grows, the need and desire for users to contribute back to the library also grows, and we want to make this as seamless as possible. This means writing and maintaining contribution guides, and creating checklists to guide users through the process.

Technical goals

1. Implement new OpenEEmeter models

The OpenEEmeter Working Group continues to improve the underlying models in OpenEEmeter. We seek to continue to implement these models in a safe, tested manner so that these models may continue to be used within engineering pipelines effectively.

2. Weather normal and unusual scenarios

The EEweather package, which supports the OpenEEmeter, comes packaged with publicly available weather normal scenarios, but one feature that could help make that easier would be to package methods for creating custom weather year scenarios.

3. Greater weather coverage

The weather station coverage in the EEweather package includes full coverage of US and Australia, but with some technical work, it could be expanded to include greater, or even worldwide coverage.

License

This project is licensed under [Apache 2.0](LICENSE).

Other resources

• CONTRIBUTING: how to contribute to the project.

• MAINTAINERS: an ordered list of project maintainers.

• CHARTER: open source project charter.

• CODE_OF_CONDUCT: Code of conduct for contributors.