Most UK sites are supplied more voltage than they need. We turn that into savings.
Voltage Optimisation (VO) drops your incoming voltage to the optimal stable level for your equipment. For candidate sites that's typically a 5–15% electricity saving, with a 2–3 year payback and longer asset life on top.
- 5–15%
- Typical electricity saving
- 2–3 yrs
- Payback period
- 10–15+ yrs
- Asset life after payback
What voltage optimisation actually does — in one paragraph.
UK supply voltage is allowed to sit anywhere in a range that's generally above the optimal operating voltage for modern equipment. The extra voltage doesn't make anything work better — it just produces heat, accelerates wear and inflates your bill. A voltage optimisation unit sits between your incoming supply and your distribution board, drops the voltage to a stable optimal level, and stops the waste. Done well, that's a 5–15% reduction in your electricity consumption, and the kit pays for itself in roughly two to three years.
Why TUS for VO
5–15% off your electricity
Most UK sites are supplied above the voltage their kit actually needs. VO drops the incoming voltage to an optimal stable level — typical savings sit between 5% and 15%.
Lower carbon, by definition
Using less power means lower Scope 2 emissions. The carbon reduction flows automatically into your SECR and ESG reporting.
Less wear on your equipment
Motors, lighting and electronics run cleaner at optimised voltage — fewer breakdowns, longer asset life, less maintenance spend.
Better power quality
VO stabilises voltage fluctuations and dampens surges. Sensitive equipment lives longer, and reliability problems drop.
2–3 year payback
For most candidate sites the kit pays for itself inside 2–3 years. The savings then drop straight to the bottom line for the remaining 10–15 years of asset life.
Statutory voltage compliance
VO helps you stay inside the statutory voltage limits — no more receiving voltage you didn't want and shouldn't be paying for.
Move from a single price-fix to a portfolio you actively manage.
Our trade desk currently manages over 150 GWh in flex contracts on behalf of UK businesses, and beat supplier projections by 20% in the last 12 months. You stay in control. We do the trading.
From survey to verified savings
We don't propose VO without measuring your voltage first. No survey means no project.
- 1
Site survey
We log incoming voltage and equipment type to confirm the savings opportunity. No survey, no proposal.
- 2
Engineering proposal
Sized unit, modelled savings, payback period, install plan, downtime estimate (usually minimal).
- 3
Funding
CapEx, lease, or savings-share — we model the option that fits the balance sheet you actually have.
- 4
Install
Typically commissioned overnight or in a planned outage. We schedule around your operations.
- 5
Monitor & verify
Sub-metering and Yolk dashboards track the saving against the forecast. Variance investigated and reported.
Voltage Optimisation — frequently asked questions
Curious whether VO would pay back at your site?
A two-week voltage log on your incoming feed is enough to tell us. We'll do the survey and put a written recommendation in front of you — for free.