The secret to real value from solar & battery

Most businesses investing in solar and battery still don’t trust the Data they’re using to make the decision.

And with the UK energy market generating billions of new data points every year through Market-wide Half Hourly Settlement (MHHS), any problems with Data are only going to grow.

And if you don’t trust the numbers, you shouldn’t trust the investment.

Solar and battery returns are driven by one thing: timing.

This is where most people get it wrong. Not total consumption. Not headline tariffs.
Just When you use electricity. And this is exactly what MHHS wants consumers to focus on,

Yet most investment cases are still built on:

• monthly reads
• assumed load profiles
• generic pricing curves

That’s how you end up with:

• Batteries that are under used
• Solar that overgenerates at the wrong times
• ROI models that drift

The shift to actual data

MHHS moves us from estimated profiles to 17,520 Half Hourly Data points per meter, per year.

Suddenly you can see:

• Real peak demand windows
• Daily volatility
• How your consumption actually behaves

That’s what unlocks value:

• Time of Use tariffs that reward flexibility
• Batteries responding to price signals, not guesswork
• Solar sized to match real daytime demand

Data is the difference between a good investment and a bad one.

If you’re thinking about solar and battery, this is the bit that matters.

1. Fix your metering first

If your meters aren’t working or they’re not configured or you are having lots of manual read site visits – stop.

No amount of modelling can fix bad metering.
MHHS and energy Data relies on working, well-maintained meters which can remotely communicate with a Data collector.

You need reliable Half Hourly Data across every relevant site.

2. Check your Data quality

Ask simple questions:

• Do we have data gaps?
• How much is estimated?
• Is it validated and complete?

If you don’t know, that’s a problem.

Poor data doesn’t just reduce accuracy — it can delay ROI.

3. Model against real behaviour

Your estate is not “typical”.

Model using:

• Actual Half-Hourly Demand Profiles
• Seasonal variation
• Site-specific operating patterns

That’s how you size your assets properly and avoid paying for grid capacity you’ll never use.

4. Prepare to be flexible

The real value sits in flexibility – can you generate power when it’s cheap, store it, then consume it at peak price times of day?

Can you shift your high consumption away from the peak times?

You need to understand:

• How Time of Use tariffs will evolve
• How can you shift demand to cheaper periods

The takeaway: Better Data won’t just improve decisions. It will expose bad ones.

This is the bit no one will say out loud. Some projects that stack up today won’t survive proper scrutiny. That’s not a reason to pause. It’s a reason to get the inputs right before you commit capital.

Start with accurate, Half Hourly data from working, well-maintained meters.

Thinking about solar & battery?

If you’re not completely confident in the Data behind your solar and battery plans, it’s worth a conversation.

We help organisations move forward with renewables grounded in Half Hourly Data.