# Does this graph make sense in terms of PV versus grid supply

**URL:** <https://community.openenergymonitor.org/t/does-this-graph-make-sense-in-terms-of-pv-versus-grid-supply/19617>\
**Category:** Emoncms.org\
**Created:** [26 January 2022 17:52 UTC](https://community.openenergymonitor.org/t/does-this-graph-make-sense-in-terms-of-pv-versus-grid-supply/19617 "2022-01-26T17:52:03Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Robert.Wall](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/robert.wall/32/38246_2.png) [@Robert.Wall](https://community.openenergymonitor.org/u/Robert.Wall)\
**Post date:** [29 January 2022 19:22 UTC](https://community.openenergymonitor.org/t/does-this-graph-make-sense-in-terms-of-pv-versus-grid-supply/19617/8 "2022-01-29T19:22:23Z")

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> [@BerkshireBugsy](#):
>
> what are the E1 and E2 feeds

A search here should have revealed the answer - I have answered this at least once before. They are the accumulated **E** nergy values.  
([EmonTx values and calibration question](https://community.openenergymonitor.org/t/emontx-values-and-calibration-question/13964))

I doubt it is documented for the sketch you’re using, but the new EmonTxV34CM\_rfm69n sketch has the identical output format, and that’s documented here: [The emonPiCM](https://community.openenergymonitor.org/t/the-emonpicm/18173)

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