Tag: carbon intensity

Featured Posts, Technology / Software

Why are Salesforce hiding the emissions of their cloud?

Salesforce incorrect carbon data
The lack of transparency from Cloud computing providers is something we have discussed many times on this blog – today we thought we’d highlight an example.

Salesforce dedicates a significant portion of its site to Sustainability and on “Using cloud computing to benefit our environment”. They even have nice calculators and graphs of how Green they are. This all sounds very promising, especially the part where they mention that you can “Reduce your IT emissions by 95%”, so where is the data to back up these claims? Unfortunately, the data is either inaccurate or missing altogether.

For example, Salesforce’s carbon calculator (screen shot above) tells us that if an organisation based in Europe moves its existing IT platform (with 10,000+ users) to the Salesforce cloud, it will reduce its carbon emissions by 87%.

This is highly suspect. Salesforce’s data centers are in the US (over 42% of electricity generated in the US comes from coal) and Singapore where all but 2.6% of electricity comes from petroleum and natural gas [PDF].

On the other hand, if an organisation’s on premise IT platform in Europe is based in France, it is powered roughly 80% by nuclear power which has a very low carbon footprint. If it is based in Spain, Spain generates almost 40% of its power from renewables [PDF]. Any move from there to Salesforce cloud will almost certainly lead to a significant increase in carbon emissions, not a reduction, and certainly not a reduction of 87% as Salesforce’s calculator claims above.

Salesforce incorrect carbon data

Salesforce also has a Daily Carbon Savings page. Where to start?

To begin with, the first time we took a screen shot of this page was on October 1st for slide 26 of this slide deck. The screen shot on the right was taken this morning. As you can see, the “Daily Carbon Savings” data hasn’t updated a single day in the meantime. It is now over two months out-of-date. But that’s probably just because of a glitch which is far down Salesforce’s bug list.

The bigger issue here is that Salesforce is reporting on carbon savings, not on its carbon emissions. Why? We’ve already seen (above) that their calculations around carbon savings are shaky, at best. Why are they not reporting the much more useful metric of carbon emissions? Is it because their calculations of emissions are equally shaky? Or, is it that Salesforce are ashamed of the amount of carbon they are emitting given they have sited their data centers in carbon intensive areas?

We won’t know the answer to these questions until Salesforce finally do start reporting the carbon emissions of its cloud infrastructure. In a meaningful way.

Is that likely to happen? Yes, absolutely.

When? That’s up to Salesforce. They can choose to be a leader in this space, or they can choose to continue to hide behind data obfuscation until they are forced by either regulation, or competitive pressure to publish their emissions.

If we were Salesforce, we’d be looking to lead.

Image credits Tom Raftery

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(Cross-posted @ GreenMonk: the blog)

Technology / Software

Cloud Computing: Google Apps cloud has a relatively high carbon intensity

Cloud
I have been researching and publishing on Cloud Computing for quite some time here. Specifically, I’ve been highlighting how it is not possible to know if Cloud computing is truly sustainable because none of the significant Cloud providers are publishing sufficient data about their energy consumption, carbon emissions and water use. It is not enough to simply state total power consumed, because different power sources can be more, or less sustainable – a data center run primarily on renewables is far less carbon intensive than one that relies on power from an energy supplier relying on coal burning power stations.

At Greenmonk we believe it’s important to get behind the headline numbers to work out what’s really going on. We feel it’s unacceptable to simply state that Cloud is green and leave it at that, which is why we’ve been somewhat disappointed by recent work in the field by the Carbon Disclosure Project. We would like to see more rigour applied by CDP in its carbon analytics.

Carbon intensity should be a key measure, and we need to start buying power from the right source, not just the cheapest source.

I was pleasantly surprised then yesterday when I heard that Google had published a case study ostensibly proving that Cloud had reduced the carbon footprint of at least one major account.

However, it is never that straightforward, is it?

The Google announcement came in the form of a blog post titled Energy Efficiency in the Cloud, written by Google’s SVP for Technical Infrastructure, Urs Hölzle. I know Urs, I’ve met him a couple of times, he’s a good guy.

Unfortunately, in his posting he heavily references the Carbon Disclosure Project’s flawed report on Cloud Computing, somewhat lessening the impact of his argument.

Urs claims that in a rollout of Google Apps for Government for the US General Services Administration,

the GSA was able to reduce server energy consumption by nearly 90% and carbon emissions by 85%.

An 85% reduction in carbon emissions sounds very impressive – but how does Google calculate that figure?

Technology / Software

Don’t forget – where your cloud apps are hosted helps determine their carbon footprint

Greenwash
Back in July of this year (2011), the Carbon Disclosure Project (CDP), in conjunction with Verdantix, released a report titled Cloud Computing – The IT Solution for the 21st Century [PDF warning] which erroneously claims Cloud Computing is Green. Shortly after it was released, I wrote a long post outlining exactly where the report was flawed. I also contacted the CDP directly outlining my concerns to them and pointing them to the blog post.

Then, a couple of weeks back, when preparing my slides for my Cloud Computing’s Green Potential talk for the Cepis and Hepis Green IT conference in Athens, I discovered that Verdantix and the CDP had published

a new report [PDF] on the business and environmental benefits of cloud computing in France and the UK

Unfortunately, not only does the new report make the same mistakes as the original one, but it further compounds those errors with an even more fundamental one.

Let me explain.

In the key assumptions section of the report it talks about the metric tons of CO2/kWh in both the UK and French electricity grids (0.000521 tonnes and 0.000088 tonnes respectively). It uses these figures to extrapolate the savings in both France and the UK for companies migrating their applications to cloud computing.

So? You say. Sounds reasonable to me.

Well, the issue is that they didn’t do any work to identify where applications migrated to the cloud would be hosted. The implication being that UK applications migrated to the cloud, will be hosted on UK cloud infrastructure and French IT applications will be migrated to French hosted cloud infrastructure. In fact this would be a highly unusual scenario.

A quick look at where most cloud hosting takes place shows that the vast majority of it is occurring in the US, with quite a lot happening in Singapore with a lesser amount in Europe (and that split between Ireland, Germany, UK, etc. but almost none in France – Ireland is underestimated in the list as it doesn’t include Microsoft which has a significant Cloud hosting facility in Dublin which it is now expanding or Google’s Dublin facility)…