How Much Can Your Business Save with Solar in the UK?

With electricity prices remaining volatile, many UK businesses are asking the same question:

How much can we actually save with solar?

The answer depends on your building, energy usage, and system design — but for most commercial sites, the savings can be significant and immediate.

In this guide, we break down realistic solar savings for UK businesses, how they are achieved, and how a Power Purchase Agreement (PPA) with Vega allows you to unlock those savings with no upfront cost.

What Drives Solar Savings for Businesses?

The core principle behind commercial solar savings is simple:

👉 You generate electricity onsite instead of buying it from the grid.

Grid electricity prices for businesses often range between 20p–35p per kWh (depending on contract and market conditions).

With a solar PPA, businesses can typically secure electricity at around:

👉 12p-19p per kWh

This creates an immediate saving on every unit of electricity used.

Example: Typical Business Solar Savings

Let’s look at a simplified and realistic example:

Business profile:

• Annual electricity usage: 200,000 kWh

• Daytime usage: Moderate to high

• Solar system size: ~200 kWp

Without solar:

• Grid electricity cost: 25p/kWh

• Annual cost: £50,000

With a Vega PPA:

• Solar electricity cost: 15p/kWh

• 50% of energy supplied by solar

New blended cost:

• Solar: 100,000 kWh × £0.15 = £15,000

• Grid: 100,000 kWh × £0.25 = £25,000

• Total: £40,000

👉 Annual saving: £10,000 (20%)

Important Note: Generation vs Usage

It’s important to understand that:

👉 Solar PV systems do not always align perfectly with electricity usage.

This means:

• At times, solar will generate more than the site is using

• At other times, the site will import electricity from the grid

However, a system can still be designed so that: Total annual generation matches 100% of annual consumption

In this case, the site becomes a net zero electricity site, even if it still imports and exports energy at different times of the day.

Key Factors That Affect Solar Savings

Not all buildings are the same. The biggest drivers of solar savings in the UK are:

1. Daytime Electricity Usage

Solar generates during the day, so businesses operating between 8am–6pm benefit the most.

Ideal sectors:

• Warehouses

• Manufacturing

• Farms

• Retail

• Hospitality

2. System Size vs Energy Demand

The closer your solar generation matches your energy usage, the higher your savings.

Vega designs systems to maximise onsite consumption, which is where the strongest financial return is achieved.

3. Electricity Price

The higher your current electricity rate, the greater the saving.

With continued price volatility, locking in a lower PPA rate becomes increasingly valuable.

4. PPA Structure

Different Power Purchase Agreement structures can impact savings:

• Pay for consumed energy only

• Pay for generated energy (lower rate, higher risk)

• Split import/export pricing models

Vega helps structure each agreement to suit your business and maximise value.

Why a Solar PPA Maximises Savings

Traditionally, installing solar required significant upfront investment.

A solar PPA removes that barrier completely.

With Vega:

✅ No upfront cost

✅ No maintenance responsibility

✅ Immediate cost savings

✅ Long-term price certainty

Vega funds, installs, owns, and manages the system — you simply benefit from cheaper electricity.

Long-Term Savings: The Bigger Picture

While immediate savings are attractive, the real value builds over time.

A typical PPA lasts 15–25 years, meaning:

• Protection from rising electricity prices

• Predictable operating costs

• Increasing savings over time

As grid prices rise, the gap between solar and grid electricity typically widens — improving savings year-on-year.

Additional Financial Benefits

Beyond direct electricity savings, solar can also deliver:

• Improved EPC ratings

• Increased property value

• Reduced carbon reporting costs

• Enhanced ESG performance

How Vega Helps You Maximise Solar Savings

Vega is focused on making commercial solar simple, flexible, and financially beneficial.

Tailored System Design

Each system is designed around your usage profile to maximise savings.

Flexible PPA Structures

Choose the structure that best fits your business.

Fully Managed Solution

From installation to billing, Vega handles everything.

Local Installer Network

Delivered by trusted, vetted local installers.

Is Your Business a Good Fit for Solar?

You’re likely to benefit from a solar PPA if you have:

• High daytime electricity usage

• Large roof space or land

• Long-term site occupancy

• A focus on cost reduction and sustainability

Final Thoughts: Solar Savings Are Now a Business Advantage

Solar is no longer just a sustainability decision — it’s a financial advantage.

With the right setup, businesses can:

• Reduce electricity costs by 20%+

• Improve energy security

• Move towards net zero

And with a Vega PPA, you can achieve all of this without upfront investment.

Find out how much your business could save. Speak to Vega today for a tailored solar savings assessment.

FAQ

How much can a business save with solar in the UK?

Most businesses save between 15% and 40%, depending on usage and system design.

Can a business become net zero with solar?

Yes — if annual generation matches annual consumption, a business can achieve net zero electricity usage.

Do you need to pay upfront for commercial solar?

No — with a PPA, there is no upfront cost and savings start immediately.

See our full FAQ here.