Lumo calculations
Tariff savings calculations dated June 2026
How much could you save and earn with Lumo?
Solar panels and a battery are a great start, but without smart control, a surprising amount of their value goes to waste. At Lumo, we're a team of energy experts on a mission to change that.
Tariff savings
Our savings estimates are grounded in real simulation work, not guesswork. Here's what we did:
- Took half-hourly consumption data from 400 smart meters across London over 12 months
- Modelled three scenarios for each home: no solar, solar with a 10kWh battery on load-matching, and the same system running with Lumo optimisation
- Analysed the cost difference between each scenario to isolate the value Lumo adds
The results are clear: Lumo's optimisation delivers a meaningful uplift over a standard load-matching setup.
- Our methodology has been independently reviewed by EPVS for a typical home, which showed up to 30% improvement in savings when Lumo is applied
- We're currently working with EPVS to expand that analysis across more scenarios and system sizes
- Figures are simulation-based estimates and are not guaranteed
- Your results will vary depending on your tariff, household consumption, system size, and time of year
- We'll keep refining our numbers as our dataset and independent review work grows
Grid Rewards
On top of bill savings, homeowners with a battery can join Lumo Grid Rewards. Lumo uses your battery’s spare capacity in electricity markets, such as wholesale trading, the Capacity Market and other grid services, and pays you a fixed annual reward set by your battery size, from £100 to £325 a year. Your reward builds up daily and is paid every three months. It does not depend on the weather, your tariff, your usage or how much Lumo earns from trading. Current rates are fixed until 31 January 2027.