<commit_before><commit_msg>added eia861 rst file<commit_after>===============================================================================
EIA Form 861
===============================================================================

The EIA 861 form elicits information from utilities regarding load, generation,
capacity, sales, revenues, programs, and more. The 861 form exists in parallel
with its "short form" counterpart, the 861S which is not yet included in the
pudl database. Once the respondent utilities have submitted their data, the EIA
creates a series of output tables group to reflect themes within the form. These
tables have changed over the years as the form itself evolves. The following
list shows the different EIA 861 tables included in the pudl database as compiled
by EIA:

+-----------------+--------------+------------------------------------+
| 861 Table Name  | Years Used   | Description                        |
+=================+==============+====================================+
| Advanced Meters | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Balancing       |              |                                    |
| Authority       | 2012 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Demand Response | 2013 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Distribution    |              |                                    |
| Systems         | 2013 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Dynamic Pricing | 2013 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Energy          |              |                                    |
| Efficiency      | 2013 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Frame           | 2016 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Mergers         | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Net Metering    | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Non Net         |              |                                    |
| Metering        | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Operational Data| 1990 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Reliability     | 2013 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Sales to        |              |                                    |
| Ultimate        |              |                                    |
| Customers       | 1990 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Mergers         | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Mergers         | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Mergers         | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Mergers         | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
| Mergers         | 2007 +       | column 3                           |
+-----------------+--------------+------------------------------------+
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