> For the complete documentation index, see [llms.txt](https://docs.buildingtransparency.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.buildingtransparency.org/ec3/release-notes/archive/2023.md).

# 2023

EC3 releases from July to December 2023, newest first.

## 2023-12-11 (147)

* Internal changes to single sign-on, FEMA filters, etc.
* New internal API endpoint GET/materials/plants. With it, API clients can search for plants by providing a material filter, providing a list of plants producing materials matching specifications.
* Added [math operator](/ec3/main-features/find-and-compare-materials/using-specification-filters.md#math-operators) to the search field for the number of window panes in an IGU

## 2023-11-27

* Added [calculator ](/ec3/main-features/plan-and-compare-buildings/material-calculators.md)for Metal Deck in Project Planner - aids estimating of mass of metal decking based on standard deck profiles
* Added [reference values](https://docs.buildingtransparency.org/ec3/managing-data/manage-data#_heading-h.3cqmetx) for industry-averages listed in the 2023 CLF North American Material Baselines Report

## 2023-11-13

* Added [Rollup Reports](/ec3/main-features/plan-and-compare-buildings.md#rollup-reports) to Plan & Compare Buildings - allows export of Excel reports for multiple projects at once
* Added EPD[ source type](/ec3/managing-data/manage-data.md#source-of-data) tags to EPDs
* Added maps to Find & Compare Materials - shows locations of plants with EPDs
* Improved caching - improves tool performance, speeds up loading of page content

## 2023-10-30

* Tiling category released to public (thanks to partnership with [TCNA](https://tcnatile.com/))
* Added [Rollup charts](/ec3/main-features/plan-and-compare-buildings.md#rollup-charts) to Plan & Compare Buildings - allows visual analysis of multiple projets at once
* [FAQ ](/ec3/faq.md)moved from EC3 to Gitbook - one central place for all FAQ, easier to maintain & update
* Bug fix for duplicating elements in Project Planner

## 2023-07-14

* Added [calculators](/ec3/main-features/plan-and-compare-buildings/material-calculators.md) to Project Planner, including Concrete by Volume, Concrete by Area, Rebar by Concrete Volume, Rebar by Length, Metal Stud by Spacing - aids in estimating quantities of materials in units compatible with EPDs
* Added filter for FEMA compliance to select product categories