Create Solar PV Monitoring web page

We use multiple manufactures for solar panel installations and are looking to create a page on our website that will combine the stats from multiple sites to show our global stats, together with some drilldown using the inverter manufacture software API connections. The manufacturers we want to combine are the following:

SolarEdge: https://knowledge-center.solaredge.com/sites/kc/files/se_monitoring_api.pdf

Solis: https://solis-service.solisinverters.com/en/support/solutions/articles/44002212561-api-access-soliscloud

Solax: https://www.eu.solaxcloud.com/phoebus/resource/files/userGuide/Solax_API_for_End-user_V1.0.pdf

We would like to display at the top of the page the main totals of combined:
- Number of sites
- Total Installed capacity (MW dc)
- Annual Energy Production (MWh)
- CO2 Emission Saved (t)
- Equivalent Trees Planted

We would then like to display some live data to show the current production of all the sites combined:
- System Production Now (kW)
- System Production Today (kWh)
- System Production This Month (kWh)

A map of UK should show all the sites and provide the live data of each site production with a pin drop and the ability to click and see the live production data of that site. We have already started by creating a google map but would need this to be optimised and improved, together with the coding to show the stats and improved visual and graphical output.

https://energy.green-light.co.uk/energy-map/

The google map doesn't work very well and we are open to how this can be displayed in a better format. I would suggest reading up briefly on the monitoring software and looking at screenshots to understand what is possible and the info we can gather from the API's.