Powering Grid Stability. Rewarding Your Flexibility.
CUB operates its own Capacity Market Units (CMUs) under the UK Government’s Capacity Market scheme.
We contract commercial and industrial electricity users directly into our portfolio and manage qualification, compliance, performance and settlement on their behalf.
CUB operates multi-megawatt Proven DSR capacity and continues to expand contracted volume across future delivery years.
We are an active Capacity Market operator — not a referral consultancy.
![]()
The Capacity Market is a government-backed mechanism designed to ensure security of electricity supply during periods of system stress.
Participants commit to either:
In return, participants receive an annual £/kW payment for availability.

CUB registers and operates its own DSR CMUs.
Sites are contracted directly into CUB-managed units and aggregated into a controlled portfolio structure.
We manage:
Our portfolio includes manufacturing, industrial processing, pumping and high-load commercial sites.
In practical terms, sites typically qualify if they:
Industrial sites consuming 1–5 GWh annually often have qualifying capacity.
Each site is assessed individually using historic demand data.
In most cases, no.
CUB operates a manual Demand Side Response model.
Participating sites receive instruction when a Capacity Market Notice (CMN) is issued and reduce load operationally.
No battery installation or automated control hardware is required under standard participation structures.
Earnings depend on:
Qualified kW
Auction clearing price
Derating factor (DSR typically ~80–85%)
Illustrative examples:
250 kW qualified
£50/kW clearing price
Annual contracted revenue ≈ £12,500
500 kW qualified
£50/kW clearing price
Annual contracted revenue ≈ £25,000
Clearing prices have historically ranged between £40–£75/kW depending on auction year.
Revenue is contracted for the full delivery year.
You can read our Case Studies about working with Middle Level Commissioners & Burgess Group Ltd, enrolling them into the Capacity Market, and generating new revenue.
A Capacity Market Notice (CMN) is issued by NESO when system margins tighten.
Whilst CMN’s have been issued a System Stress Event has never actually occurred however events would be assumed to take place:
CUB coordinates portfolio response and monitors performance across contracted sites.
Capacity Market participation includes:
CUB manages portfolio performance and monitors site readiness throughout the delivery year.
Participation is structured, controlled and rule-driven — not speculative.
No.
The scheme is generally not suitable for:
It is most effective for industrial and process-heavy electricity users with meaningful peak demand.
What is the minimum size for Capacity Market participation?
Typically 100–250 kW of reducible load, though 500,000 kWh+ annual usage is a practical starting point.
Is hardware required?
Not in standard manual DSR models operated by CUB.
How often are stress events called?
Historically limited and concentrated in winter peak periods.
What is a CMU?
A Capacity Market Unit (CMU) is the registered entity that contracts capacity into the scheme.
What is derating?
A percentage applied to qualified capacity reflecting reliability assumptions under Capacity Market Rules.
Are contracts multi-year?
Delivery commitments are typically annual, with participation secured via T-1 or T-4 auction structures.