Why Power BI Dashboards Still Rely on Spreadsheets
Many businesses adopt Microsoft Power BI with the goal of moving away from spreadsheets and creating a more modern reporting environment. Power BI offers strong visualisation tools and the ability to bring data together from multiple systems, making it an attractive option for organisations looking to improve reporting.
However, in practice, many SMEs find that spreadsheets continue to play a significant role even after Power BI dashboards have been introduced.
In many cases, Power BI is used to present data, but the underlying preparation and validation of that data still takes place in Excel.
For example, finance teams may continue to export data from systems, adjust figures, apply business logic or reconcile numbers in spreadsheets before the data is used in Power BI. These steps are often necessary to ensure that reports reflect how the business actually operates.
As a result, spreadsheets do not disappear — they move earlier in the process.
This creates a situation where businesses are maintaining both spreadsheet processes and Power BI dashboards at the same time.
Another reason spreadsheets remain in use is flexibility.
Power BI dashboards are typically built to answer specific questions based on defined data models. When new reporting requirements arise, making changes to the dashboards can require technical updates.
In contrast, spreadsheets allow users to quickly adjust data, test new ideas and explore different ways of analysing performance.
Because of this, many businesses continue to use Excel alongside Power BI for ad hoc analysis and reporting adjustments.
Over time, this can lead to duplication of effort.
Data may be prepared in spreadsheets, loaded into Power BI and then exported again for further analysis. This creates additional steps in the reporting process and increases the risk of inconsistencies between different reports.
One finance director described how their organisation introduced dashboards but still relied on spreadsheets to validate and adjust the data. While the dashboards improved visibility, the underlying reporting process remained largely unchanged.
Another challenge is maintaining the logic behind the reports.
Business rules, calculations and adjustments are often developed over time within spreadsheets. Replicating this logic accurately within Power BI can be complex, particularly if the original spreadsheets have evolved over many years.
As a result, businesses may continue to rely on spreadsheets because they trust the logic that has been built into them.
For many SMEs, the goal is not simply to replace spreadsheets with dashboards, but to remove the need for manual data preparation altogether.
This requires a different approach.
Illuminis provides a fully managed reporting solution through the Octelas platform.
Rather than layering dashboards on top of existing spreadsheet processes, illuminis works with businesses to understand how their reporting currently operates. Existing spreadsheets, calculations and business logic are interpreted and recreated within a structured reporting environment.
By doing this, the logic that was previously managed in spreadsheets becomes part of the reporting system itself.
This removes the need for ongoing manual preparation and ensures that reports are consistent and reliable.
Once implemented, reporting is automated and maintained as part of an ongoing service. Data flows directly from source systems into the reporting environment, and reports are generated without the need for intermediate spreadsheet steps.
This significantly reduces duplication of effort and removes the risk of discrepancies between different reports.
One managing director described the impact as moving from a process where spreadsheets were constantly being updated and checked to a system where reports were always available and could be trusted.
For SMEs, the key challenge is not just visualising data, but managing how that data is prepared and maintained.
While Power BI can provide strong visual dashboards, many organisations find that it does not eliminate the need for spreadsheets.
A fully managed reporting solution offers a more complete approach by removing manual processes, embedding business logic within the system and providing reliable, up-to-date reporting without the need for ongoing spreadsheet work.