BI & DataDecember 7, 20258 min readBy Afer Studio

Power BI Data Sources: Why Your Business Data Is Scattered and How to Fix It

Most UK SMEs have their business data spread across 5-8 different systems. Here's how to connect them properly without breaking your budget.

Your sales data lives in one system. Your financial data in another. Customer information is scattered across three different spreadsheets, and your inventory data is stuck in a system that last saw an update in 2019.

Sound familiar? You're not alone. We've worked with dozens of UK SMEs who have the same problem - valuable business data trapped in silos, making it impossible to get a complete picture of their operations.

The average small business we encounter uses between 5-8 different data sources. That's 5-8 different logins, 5-8 different reports to check, and absolutely no way to see how everything connects.

Reality Check: If you're manually copying data between systems or creating reports by hand each month, you're probably spending 10-15 hours on tasks that could be automated in minutes.

The Hidden Cost of Scattered Data

Here's what fragmented data actually costs your business:

Monthly time lost to manual reporting
Average error rate in manual data transfer
Annual cost for a 10-person business

But the real cost isn't time - it's missed opportunities. When your data is scattered, you can't spot trends, identify problems early, or make quick decisions based on complete information.

We worked with a Leicestershire manufacturing company last year who discovered they were sitting on £40,000 worth of slow-moving stock simply because their inventory system didn't talk to their sales system. The data was there, but no one could see the connection.

Common Data Source Problems We See

The Excel Nightmare Every department has their own spreadsheet. Sales has their pipeline, operations has their delivery schedule, and finance has their cash flow projections. Nothing connects, and version control is non-existent.

The Legacy System Trap Your accounting software is 10 years old but works perfectly. Your CRM is cloud-based and modern. They've never spoken to each other, and probably never will without help.

The Access Database Horror Someone built a Microsoft Access database in 2015. It still runs the core of your business, but it's on Dave's laptop, and Dave's thinking about retirement.

The SaaS Explosion You've got separate systems for invoicing, project management, customer support, and inventory. Each one generates reports, but none of them give you the full picture.

Power BI: The Data Connection Solution

This is where Power BI becomes genuinely useful. Not because it makes pretty charts (though it does), but because it's designed to connect to virtually any data source your business uses.

Power BI can connect to over 150 different data sources out of the box. That includes everything from Excel spreadsheets to cloud-based accounting systems to that ancient SQL database running your operations.

Real Data Sources We Connect Regularly

Here's what we typically connect for UK SMEs:

Accounting Systems:

  • Sage 50/200/X3
  • Xero
  • QuickBooks
  • FreeAgent

CRM Systems:

  • HubSpot
  • Pipedrive
  • Salesforce
  • Custom CRM databases

E-commerce Platforms:

  • Shopify
  • WooCommerce
  • Magento
  • Amazon Seller Central

Operations:

  • Excel spreadsheets (yes, still)
  • Access databases
  • SQL Server databases
  • SharePoint lists

Marketing:

  • Google Analytics
  • Facebook Ads
  • Mailchimp
  • LinkedIn ads

The Connection Process That Actually Works

Connecting data sources isn't just about technical capability - it's about doing it in a way that won't break next month. Here's our approach:

1

Data Audit

Map out every system that contains business-critical information. Include spreadsheets, databases, cloud services, and that notebook the receptionist uses to track deliveries.

2

Priority Ranking

Not all data is equally important. Start with the sources that drive daily decisions - usually sales, cash flow, and operational metrics.

3

Connection Strategy

Choose the right connection method for each source. Direct connections for cloud services, gateways for on-premises systems, and scheduled imports for static data.

4

Data Validation

Test every connection thoroughly. Check data types, handle missing values, and ensure refresh schedules work reliably.

5

Monitoring Setup

Configure alerts for connection failures, data quality issues, and refresh problems before they break your reports.

Connection Methods Explained

Direct Cloud Connections The easiest option. If your data source is cloud-based (Xero, HubSpot, Shopify), Power BI can usually connect directly with just authentication setup.

On-Premises Gateway For local databases and Excel files, you'll need a data gateway - software that creates a secure bridge between your local systems and Power BI cloud.

File-Based Import Sometimes the simplest approach. Export data from your source system and import it into Power BI on a schedule.

API Connections For custom systems or unusual data sources, we can build API connections that pull data automatically.

The Gateway Problem (And Solution)

Here's where most DIY Power BI projects fail - the on-premises data gateway. It's Microsoft's solution for connecting cloud-based Power BI to your local systems, but it's also a single point of failure that can break your entire reporting setup.

We've seen gateways fail because:

  • Someone restarted the server
  • Windows updates changed network settings
  • The service account password expired
  • The person who set it up left the company

Pro Tip: Always install gateways on dedicated servers or virtual machines, never on someone's desktop. And always have a backup gateway configured.

Real-World Example: Manufacturing Company Data Integration

A precision engineering company in Coventry came to us with data spread across:

  • Sage 50 for accounting
  • A custom Access database for job tracking
  • Excel spreadsheets for quality control
  • PDF reports from their CNC machines
  • Email-based customer communications

The owner was spending entire Saturdays creating weekly reports by manually copying data between systems.

We connected all five data sources to Power BI, automated the weekly reports, and added real-time dashboards showing job progress and cash flow.

Result: Saturday report writing became a 30-second dashboard refresh. The owner spotted a quality issue trend that was costing £500 per month. ROI achieved within six weeks.

Common Connection Mistakes to Avoid

Connecting Everything Just because you can connect a data source doesn't mean you should. Focus on data that drives decisions, not data that simply exists.

Ignoring Data Quality Connecting bad data just gives you bad reports faster. Clean up your data sources before connecting them.

Over-Complicated Relationships
Keep data relationships simple. If you need a PhD in database design to understand your data model, you've gone wrong somewhere.

No Backup Plan What happens when your primary data connection fails? Always have a contingency plan.

The ROI of Connected Data

Here's what properly connected data sources typically deliver:

| Metric | Before | After | Improvement | |--------|---------|--------|-------------| | Report Creation Time | 8 hours/month | 30 minutes/month | 93% reduction | | Data Accuracy | 77% | 98% | 27% improvement | | Decision Speed | 3-5 days | Same day | 80% faster | | Trend Identification | Quarterly | Weekly | 12x more frequent |

Getting Started Without Breaking Things

Week 1: Identify your top 3 data sources Week 2: Test connections with non-critical data Week 3: Build simple reports to validate data quality Week 4: Gradually add more complex connections

Don't try to connect everything at once. Start small, prove the concept, then expand.

When to Get Help

DIY data connections work fine for simple scenarios - connecting Xero to Power BI for basic financial reporting, or linking a single Excel file for sales data.

But if you're dealing with multiple data sources, legacy systems, or business-critical reporting, getting professional help from the start saves time and prevents expensive mistakes.

Our automation specialists typically save SMEs 6-8 weeks of trial-and-error setup, plus ongoing maintenance headaches.

The Bottom Line

Scattered data sources aren't just an inconvenience - they're actively holding your business back. Every manual report you create, every decision delayed by missing information, every opportunity missed because you couldn't see the full picture.

Power BI can connect your data sources, but success depends on doing it properly. Focus on business value, not technical complexity. Start with your most important data, prove the ROI, then expand systematically.

Your Saturday report-writing days can become a thing of the past. The question is whether you want to figure it out through trial and error, or get it right the first time.

Ready to connect your business data properly? Check out our BI & Data services or see what other SMEs have achieved in our case studies.

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