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Introducing Connected Energy’s feasibility study for battery energy storage

Connected Energy’s Head of Data Science, Frazer Wagg, outlines our free feasibility study at Connected Energy to help our potential clients realise the benefits of battery energy storage.


From the moment an enquiry comes into our sales team at Connected Energy, we have specialists working to ensure that the prospective client has the potential to see ‘reward’ from our battery energy solution.

The reward can have many different meanings depending on a client’s needs and motivations, including carbon savings, reducing peak energy usage, and saving money on expensive grid usage. Or a mix of all the above, of course.

A tailored model

The first step, after an initial meeting with our sales team, regarding the prospective BESS is a feasibility study.

This is a crucial piece of information, for both Connected Energy and the client in question, as it provides tailored insights into how feasible (it says it on the tin) a BESS would be at the client’s site.

Although you may think this is a sales hook of some kind, it is a credible piece of data analysis created by our data science team using as many real-life insights as possible from the client’s site to determine if the need, budget, energy usage, and potential carbon savings and cost savings (if applicable) are there.

Frazer said: “This isn’t an automated report, we use as many insights from grid usage as possible, or as many accurate estimates as possible to make a reasonable judgment on the viability of a BESS to ensure the time and financial investment is rewarding for a client.

“We do this through inputting data into our custom-built software, to provide a 100% tailored output in terms of carbon and/or cost savings, depending on the client’s requirements.”

We do this before offering a formal business proposal to a client to ensure that we can give a reasonable insight into the potential output of our system for their specific needs, as well as give more insights into the BESS process and how it works.

The importance of data

Our feasibility study typically involves a site survey conducted by one of the Connected Energy team and:

  • For the client to request a year’s worth of half-hourly data from their energy supplier
  • An understanding of the client’s objective – if cutting costs is important and/or carbon benefits we can use the data given and reasonable assumptions to estimate these potential outputs.

Frazer added: “Regarding how far our data provides reasonable estimates, we can’t guarantee precise outcomes without the data to hand, but these do provide valuable and informative insights into projections of solar power output or other estimated data sets.

“Our data science team has worked hard to produce a continually expanding feasibility study model that relies on previous data, other clients, and industry insights, as well as any specific data that a customer can provide, to offer a tailored and realistic report on potential BESS performance that is custom to your needs.

This report is typically turned around within two weeks once the required data has been received and allows a client to understand in clear numbers what rewards they could expect from a BESS and is further supported by the following business proposal if a client would like to proceed.

Your feasibility study is created with human data and insights, and not robotically generated, and it is the human input that ensures we can provide as much of a real-life perspective on your BESS’ potential as possible.

Frazer Wagg, Head of Data Science, Connected Energy

Frequently Asked Questions with Frazer Wagg

How much is the feasibility study?

"We do this as a free service – it’s part of our offering from Connected Energy designed to ensure that a BESS can answer your challenges – whether that’s around peak shaving, carbon savings, or costs."

Can the feasibility study be used for multiple sites?

"Yes, but we request that you undertake the feasibility study on the key sites that are going to be most rewarding in terms of your goals – we will discuss this with you during the initial sales process to ensure we give you the most insightful data."

Can you model our site without this data?

“It’d be disingenuous for us to provide specific numbers without genuine data, but we can use best practice to offer estimates wherever possible, we’d need to know the PV size, battery capabilities involved, and offer some guidance based on these.

“Data gives confidence to the feasibility study, so without real data we can’t make any guarantees.”

How do we assess our carbon saving from capturing renewable energy?

“We take the recent national grid data for carbon content for electricity generation so that any captured energy is offsetting the use of average carbon content.

“If you have your own energy pricing and carbon forecasts, we can customise the average data we’d provide to specific your results as much as possible.”

My site has now changed and the data we have from the energy company is essentially void – what do we do?

“We can’t use this data if your site and/or energy usage has changed substantially.

“We ask for a year’s worth of half-hourly data, and this should be relevant to the usage, for instance, the Covid pandemic changed a lot of organisation’s energy usage and potentially falsified data, so we asked customers to use data pre-Covid for more accurate long-term use.

“If your data is no longer relevant due to site usage changes or building development, we’d recommend using estimates from sites with similar types/purposes, but this data would only be guidance.”

Can you model whether my site can use EVs?

“We work with you to understand if you can, we have some initial modelling for fleet systems and some example sites of high use/publicly available EV charging, which we can scale from.

“We can’t always create bespoke modelling as it’s very dependent on changing variables, so we can’t guarantee accuracy.

“However, if it’s an EV site trying to solve a problem, we can estimate the likelihood of whether we can solve the issue, as a stress test.”

Arrange your feasibility study

Do you have questions about the installation of our BESS and how our feasibility studies and site surveys are undertaken? We can arrange an informal discussion of your needs if you submit our contact form below.