In today’s volatile energy market, businesses are under pressure to control rising electricity costs while meeting sustainability goals. Deploying on-site battery storage is one of the most effective ways to do both. With the right strategy, commercial and industrial sites can reduce electricity bills by up to 30% thanks to regulatory changes, smarter network charging, and greater market access for flexibility assets.

Load Shifting and Peak Shaving

Commercial batteries enable load shifting, charging during low-cost, off-peak periods and discharging when prices spike. This reduces reliance on grid imports during expensive periods and lowers exposure to time-of-use rates.

By flattening peak demand, businesses can also cut capacity charges and avoid the highest-priced “Red band” hours, especially under Distribution Use of System (DUoS) tariffs.

DUoS (Distribution Use of System) Savings

DUoS charges vary throughout the day. Batteries help businesses avoid Red band charges by discharging stored energy during these high-cost windows, while recharging during low-rate (Green band) periods.

This smart control of imports significantly reduces network costs, especially for high-consumption sites operating during standard peak hours (typically late afternoon to early evening).

Wholesale Market and Balancing Opportunities

Larger commercial batteries can participate in wholesale energy trading and balancing schemes operated by National Grid ESO. Through aggregation or direct participation, businesses can:

Risk-Managed trading via wholesale market arbitrage
Provide balancing services (such as frequency response or fast reserve)
Earn availability payments for flexibility provision

Wholesale and Balancing Mechanism revenues have become a major source of income for battery operators, often surpassing traditional frequency response services.

Elexon Code Change P442: Unlocking Regulatory Clarity

The Elexon code modification P442, approved by Ofgem is a significant enabler for commercial storage users.

P442 introduces a mechanism to separate “licence-exempt” self-supply from licensed grid supply, allowing more accurate settlement and levy calculations. Businesses that generate and store energy on-site such as those with combined solar and battery assets, can now ensure that their self-consumed electricity is correctly exempted from certain market charges.

This reduces compliance complexity and ensures you capture the full financial benefits of your behind-the-meter investments.

Long-Term Price Protection and Fixed-Cap Agreements

As the UK energy market evolves, several suppliers and energy service providers are now offering long-term price protection schemes linked to on-site battery installations.

These models combine storage technology with fixed or capped energy pricing, typically over multi-year terms, giving businesses both bill savings and price certainty.

How it works:

The provider installs and operates a battery system on your site, often with little or no upfront cost.
You agree to a fixed or capped unit price for a defined period (e.g., 10-25 years).
The provider uses the battery to optimise your site’s energy profile, charging off-peak, discharging during peaks, and potentially participating in wholesale or balancing markets.

The benefits:

Protection from price spikes and volatility
Predictable budgeting for long-term planning
No operational complexity with battery management handled by the provider
Shared upside through flexibility and market participation

This “energy-as-a-service” model is especially attractive for businesses looking to stabilise costs while meeting carbon-reduction targets, without taking on asset ownership risk.

How Eyebright Can Help

At eyebright, we specialise in helping UK businesses take control of their energy strategy through smart technology and commercial insight.

Our team can:

Analyse your site load profile to identify opportunities for battery storage and load shifting
Model DUoS and capacity charge savings specific to your location and usage patterns
Design and deliver tailored energy storage solutions, from fully funded installations to hybrid solar-and-storage systems
Provide access to fixed or capped energy supply agreements that combine on-site savings with long-term price protection
Ensure compliance with regulatory changes like P442, simplifying settlement and reporting for your energy assets

Whether you’re looking to cut costs, reduce carbon, or future-proof your energy procurement, eyebright can deliver a bespoke, commercially sound solution that aligns with your operational goals.

Get in touch today to discover how battery storage can transform your business energy strategy.

The Bottom Line

Battery storage is no longer a future concept, it’s a proven commercial strategy. By combining load shifting, DUoS optimisation, wholesale flexibility, and fixed-price protection, businesses can cut electricity bills by up to 30%, reduce carbon intensity, and gain greater control over their energy costs.

With regulatory frameworks like P442 paving the way for cleaner, smarter self-supply — and innovative financing models reducing barriers to adoption — the business case for on-site storage has never been stronger.Top of Form

And with battery costs having fallen by more than 80% over the past decade, the return on investment is now faster and more accessible than ever. Energy storage is no longer just a sustainability decision; it’s a sound financial one.