Guides & insights
Plain-English guides to the economics, tax, and engineering of commercial battery storage.
What is a half hourly meter? A guide for UK business sites
What a half hourly meter is, how to tell whether your business is half-hourly metered, what P272 and market-wide half-hourly settlement changed, and why the data decides whether a battery pays.
- half hourly meter
- half-hourly data
- DUoS
Targeted Charging Review: What It Means for a Battery
Ofgem's targeted charging review moved network residual charges to fixed charges. What that changes for a business battery, and what it leaves a battery able to save.
- TCR
- DUoS
- residual charges
What Does DNO Stand For? Find Your Network Operator
DNO means distribution network operator. How to find yours from your MPAN, which of the 14 areas you sit in, and why it matters before you buy a business battery.
- DNO
- DUoS
- grid connection
Commercial battery warranties: what eight makers publish
We read eight makers' published commercial battery warranties: the years, the capacity left at the end, the cycle limits and the conditions that can void cover.
- research
- warranty
- buying guide
Round-trip efficiency on commercial battery datasheets
Six commercial battery datasheets state round-trip efficiency in different ways, or not at all. What each figure measures and what to ask for in a quote.
- research
- efficiency
- buying guide
What UK commercial battery pages leave out: an audit of eight
We read the UK pages that rank for commercial battery storage. None of eight explainers gave a price or mentioned capital allowances. What a buyer needs instead.
- research
- buying guide
- costs
How to compare commercial battery storage quotes
Two quotes at the same price per kWh can describe different batteries. A checklist for comparing usable capacity, power, scope, exclusions and warranty.
- cost
- quotes
- procurement
Is a commercial battery main-rate or special-rate plant?
We searched the statute, HMRC's manual and GOV.UK guidance for a ruling on how a commercial battery is classified. This is what exists and what does not.
- tax
- capital allowances
- special rate
How UK businesses finance a commercial battery
Cash, hire purchase, lease, loan or service contract: how each route to financing commercial batteries works, who claims the allowances and what to ask.
- finance
- leasing
- hire purchase
Can a Battery Reduce Your kVA Capacity Charge?
What agreed capacity is, why excess capacity charges hurt, when peak-shaving makes a lower kVA viable — and the risk of giving capacity back.
- kVA
- capacity charges
- peak shaving
How to Read Your Half-Hourly Data Before Buying a Battery
Where to get 12 months of half-hourly consumption data, what the four numbers in it mean, and how to sanity-check a battery proposal against your own load.
- half-hourly data
- peak shaving
- battery sizing
Battery, UPS or Generator? Backup Power for a Business Site
What a UPS, a standby generator and a backup-capable commercial battery each do in a power cut, how to size them, and when a site needs more than one.
- backup power
- business continuity
- UPS
Using battery storage to beat a grid-connection constraint
How a behind-the-meter battery lets a constrained site add load without a costly DNO reinforcement.
- grid connection
- DNO
- capacity
Best Commercial Battery Storage: How to Choose (2026)
How to choose a commercial battery in 2026: who is quoting, chemistry, sizing, warranty terms, the UK rules and the questions to ask. An independent guide with sources.
- battery storage
- commercial
- guide
How Does Commercial Battery Storage Work? A Plain Guide
How a commercial battery energy storage system works, what it is made of, and how big a battery your business needs — explained simply for decision-makers.
- battery storage
- commercial
- guide
Battery storage VAT and capital allowances for business
A commercial battery is standard-rated for VAT, usually recoverable. The AIA covers the first £1m; above that, main-rate or special-rate is not settled.
- VAT
- tax
- AIA
Peak shaving and red-band DUoS: cutting your priciest units
How a battery shaves the weekday peak to cut red-band DUoS, kVA charges and 25-45p/kWh peak units.
- peak shaving
- DUoS
- demand charges
How to calculate payback on a commercial battery
The arithmetic behind commercial battery payback: cost, less tax relief, divided by the annual benefit. A sensitivity grid and what to measure on your own bills.
- cost
- payback
- method
Which Grid Revenue Markets Can a Business Battery Enter?
A market-by-market walkthrough for UK business batteries: Capacity Market, NESO frequency response, the Balancing Mechanism via P415, and the DFS, with entry requirements for each.
- revenue stacking
- grid services
- flexibility