OnGen

OnGen developed a sophisticated Excel model to perform the calculations necessary to determine which technologies work for a given location based on a customer’s financial or carbon-saving goals.
Case Study
May 1, 2024
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time
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D55 Background

Overview

OnGen Expert™ is an multi-award winning commercial assessment tool for onsite renewables and storage. It allows a user to identify energy cost and carbon savings and generate new revenue streams by assessing what renewable technologies could be deployed to a site.

Challenge

OnGen developed a sophisticated Excel model to perform the calculations necessary to determine which technologies work for a given location based on a customer’s financial or carbon-saving goals. In order to scale the model, and make it available for users to self-serve, OnGen engaged us to build a web application that included the same functionality as the spreadsheet and also to enhanced it with a more complex set of user inputs such as half-hourly consumption and pricing.

OnGen is necessarily complex. In order to give an accurate view of what would happen to a site if renewable technologies were deployed, it must consider thousands of variables and perform potentially many millions of calculations.

Solution

  • D55 worked with OnGen and a University Mathematics department to find efficient algorithms. We were able to use our knowledge of the Energy Industry to help shape the functionality of the project.
  • We assisted OnGen team with how to specify software and brought our extensive knowledge of DevOps and AWS to bear so that OnGen can make changes and release easily.
  • As a start-up, running costs are important. We put in a solution that scales under load but has a low running cost in periods of inactivity.
  • SNS, SQS

Looking Forward

OnGen Expert™ can concurrently perform many millions of calculations for a growing number of clients who can self-serve their assessments on the internet. The site scales with demand and remains responsive by offloading the calculations to services within AWS.

“D55 has been transformative for our business. They understood the business and our challenges and built a system that supports how we work now, as well as leveraging new technologies which are more cost-effective and increase our speed to deliver. Thanks to D55 we don’t have to worry about the day-to-day, so we can focus on the exceptional issues facing our industry."

D55 Client
CTO
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UK-based sustainable B2B Energy company

Outcome

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