Data tools and apps

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Open Source


Sandbag has a commitment to using Open Source Software where feasible. When relevant, we release our software and tools under the AGPLv3 license to benefit others working to tackle climate change. Please contact us if you are interested in using our tools.

Cross-platform + Interactive


We put a focus on developing cross-platform applications and tools so that they can be accessed from your laptop, smartphone, or tablet without the need to install anything in advance. We also believe on the importance of interactive user experience, with a special attention  on exploring the data by interacting with the visualisation itself.

Cutting-edge technologies


We are aware of the importance to be up to date with the latest technologies and paradigms in order to be able to provide an optimal result, that’s why we use paradigms such as Graph Databases in the backend or visualisation libraries such as D3.js on the frontend for many of our data solutions.

Sandbag’s smartphone app

The climate numbers worth tracking


Our app provides a live feed of three numbers we believe everyone should be watching to see progress towards CO2-free energy systems:


  • For the UK: How clean is the electricity we are using; now and the next 24 hours
  • For Europe: How much does it cost polluters to emit greenhouse gases to the atmosphere?
  • For the world: What is the current atmospheric concentration of greenhouse gases?


Get it now:

Clean electricity:

The first number is the average carbon intensity of the UK grid at that moment. The colour shows variation as the intensity changes.
Clicking through shows a breakdown of current generation by energy source. Colours here show carbon intensity of an energy source. The data comes direct from the National Grid and includes estimates of embedded renewables (e.g. rooftop solar).
At the top we display the carbon intensity throughout the day. It is easy to see when the electricity is cleanest.


Polluter pays:

The second number is the EU carbon price. A higher price means higher costs for power and industry to emit a tonne of greenhouse gases.
The Emissions Trading System (EU ETS) covers more than 45% of emissions in Europe. We track how much companies in the scheme have to pay for their pollution permits. The UK has a top-up in the form of the Carbon Floor Price, so we present that as well.


The big one:

Increasing atmospheric CO2 is the main driver of climate change. We take concentration measurements from two climate research stations (Mauna Loa, Hawaii, and Mace Head in Ireland). The concentration fluctuates through the year with deciduous forest growth, but year by year rises upwards, towards the 450ppm concentration that will likely represent the 2 degrees of warming ‘danger threshold’ for the planet.

The EU ETS Dashboard

An interactive tool to analyse data from the European Union Emission Trading System
Find out more!

Carbon Price Viewer

Check and analyse the evolution of the carbon price across time.
Try it!

40 Bermondsey Street, London, SE1 3UD

(+44) 020 3876 6451


© 2017 Sandbag Climate Campaign CIC
Registered as a Community Interest Company in England & Wales: Company No. 6714443, Trading Address: 40 Bermondsey Street, London, UK, SE1 3UD