added hard to contribute batch and icon note

README.md

@@ -1,6 +1,6 @@
 # PVNet 2.1
 
-[![Python Bump Version & release](https://github.com/openclimatefix/PVNet/actions/workflows/release.yml/badge.svg)](https://github.com/openclimatefix/PVNet/actions/workflows/release.yml)
+ [![Python Bump Version & release](https://github.com/openclimatefix/PVNet/actions/workflows/release.yml/badge.svg)](https://github.com/openclimatefix/PVNet/actions/workflows/release.yml) [![hard to contribute to](https://img.shields.io/badge/hard%20to%20contribute%20to-dd2e44)](https://github.com/openclimatefix/ocf-meta-repo?tab=readme-ov-file#overview-of-ocfs-nowcasting-repositories)
 
 This project is used for training PVNet and running PVNet on live data.
 
@@ -85,6 +85,8 @@ OCF maintains a Zarr formatted version of the German Weather Service's (DWD)
 ICON-EU NWP model here:
 https://huggingface.co/datasets/openclimatefix/dwd-icon-eu which includes the UK
 
+Please note that the current version of [ICON loader]([url](https://github.com/openclimatefix/ocf_datapipes/blob/9ec252eeee44937c12ab52699579bdcace76e72f/ocf_datapipes/load/nwp/providers/icon.py#L9-L30)) supports a different format. If you want to use our ICON-EU dataset or your own NWP source, you can create a loader for it using [the instructions here]([url](https://github.com/openclimatefix/ocf_datapipes/tree/main/ocf_datapipes/load#nwp)).
+
 **PV**\
 OCF maintains a dataset of PV generation from 1311 private PV installations
 here: https://huggingface.co/datasets/openclimatefix/uk_pv