The automation spectrum: from manual to fully automatic
There is no single right answer to Agile home automation. The right level depends on your budget, the time you are willing to invest in setup, and your appetite for technology. The good news: every level of the spectrum saves money. You do not need to go to Level 4 to get real value.
| Level | Approach | Setup cost | Annual saving | Setup time |
|---|---|---|---|---|
| Level 1 | Check AgileAlert + manual appliance timing | £0 | £200-300 | 3 min/day |
| Level 2 | Smart plug timer schedules | £12-50 | £300-400 | 1-2 hrs setup |
| Level 3 | Smart EV charger with Agile integration | £800-1,200 | £500-700 | Half-day install |
| Level 4 | Home Assistant + Octopus API | £50-150 hardware | £800+ | 1-2 weekend days |
Most households will find that Level 1 or Level 2 captures 80% of the available savings with minimal effort. Level 3 makes sense if you own an EV. Level 4 is for households who want maximum control and have some interest in home automation as a hobby as well as a financial exercise.
Start at Level 1. It costs nothing and builds the intuition you need to decide whether to go further. Every higher level is built on the habits and knowledge that Level 1 develops.
Level 1: the AgileAlert daily check and manual timer setting
Level 1 requires no equipment, no app downloads beyond what you already have, and about three minutes each evening. Here is the complete process:
- Open AgileAlert at 9pm. The full price schedule for the next 24 hours is visible, updated to show every 30-minute slot. Look for the overnight window, typically 11pm to 6am, and identify the cheapest two to four hours.
- Set your washing machine's delay start. Most modern washing machines have a delay start button. Set the cycle to begin at the start of the cheapest window you just identified. A 40-degree cotton wash uses approximately 0.6-1.0 kWh. At 3p versus 28p, the saving per wash is around 16-25p. Over a year of weekly washes, that is £8-13 saved from a single appliance.
- Set your dishwasher's delay start. Same process. A dishwasher cycle uses 1-1.5 kWh. At 3p versus 28p, saving per cycle is 25-37p. Over 250 annual cycles: £60-90 saved.
- Plug in your EV or schedule your charger to begin charging at the cheapest window. Even a basic scheduled charge from midnight saves substantially over default evening charging. An EV owner charging 20 kWh per week saves approximately £260/year by shifting from 28p to 4p per kWh.
- Set your heating delay start if you have a smart thermostat or programmable timer, to pre-heat slightly earlier or later depending on whether overnight prices are high or low.
This three-minute routine, repeated consistently, delivers £200-300 per year in reduced electricity costs. No equipment. No coding. Just information and a couple of button presses.
The only weakness of Level 1: it requires daily effort. If you miss an evening check, you lose that day's optimisation. Level 2 eliminates this dependency.
Level 2: smart plugs with daily schedules
Smart plugs solve a specific problem: appliances without built-in delay start cannot be timed without external control. A smart plug adds a programmable schedule to any appliance.
At Level 2, the goal is to set a fixed daily schedule on your smart plug that runs appliances during what is typically the cheapest overnight window, usually 1am to 5am. The schedule reflects the average cheapest period over the past month; it will not be optimal on every individual night, but it captures significantly more savings than doing nothing.
The best smart plugs for this purpose in 2026:
| Model | Price | Energy monitoring | Best for |
|---|---|---|---|
| TP-Link Tapo P110 | ~£15 | Yes | Most users; best combination of features and price |
| Meross MSS310 | ~£18 | Yes | Google Home/Alexa users; good ecosystem integration |
| Amazon Smart Plug | ~£13 | No | Budget option; Alexa households only |
| Kasa EP25 | ~£22 | Yes | Dual-outlet needs; two appliances from one plug |
Setup for a Tapo P110: download the Tapo app, add the device, tap Schedule, set the daily on/off times to your chosen overnight window. The schedule runs every day without further input. Adjust it once a month if seasonal price patterns shift the cheapest window.
Energy monitoring in the Tapo P110 and Meross MSS310 lets you verify actual savings. You can see exactly how many kWh the appliance consumed during its overnight window and calculate the cost at Agile overnight rates versus what peak pricing would have cost.
Three smart plugs running appropriately scheduled appliances typically deliver £80-150/year in combined savings, with a total investment of £45-55. Payback: four to six months.
Level 3: smart EV charger with Agile integration
For EV owners, the single highest-impact automation investment is a smart charger with direct Octopus Agile integration. The reason: EV charging represents the largest single electricity load in most households, and the difference between peak-rate charging and overnight Agile charging is substantial.
The OHME Home Pro charger integrates directly with Octopus Agile. Connect your OHME account to your Octopus account, set your target departure time and charge level, and the charger automatically schedules charging during the cheapest overnight slots. No daily input is required after the initial setup.
The Zappi charger by myenergi offers a different integration route: eco-mode charging that prioritises solar surplus during the day, supplemented by scheduled overnight charging. For households with both solar and an EV, Zappi's solar-first approach maximises self-consumption and reserves Agile overnight charging for any remaining shortfall.
Annual saving for an EV driver charging 10,000 miles per year (approximately 2,000-2,500 kWh): shifting from 28p standard rate to average 4p Agile overnight rate saves approximately £480-600 per year. A smart charger at Level 3 more than pays for itself within two years purely from EV charging savings, before accounting for any appliance scheduling.
Level 4: Home Assistant and the Octopus API
Home Assistant is a free, open-source home automation platform. It runs locally on a Raspberry Pi 4 (around £60-80) or any spare mini-PC. Once set up, it can control virtually any smart device in your home and coordinate them based on live Octopus Agile prices.
The Octopus Energy integration for Home Assistant (available free from HACS, the Home Assistant Community Store) provides:
- Live sensor for current Agile price in your region
- Tomorrow's full price schedule as an attribute (from 4pm daily)
- Electricity consumption sensors from your smart meter
- Demand Flexibility Service signal integration
- Intelligent dispatch data for Intelligent Octopus Go users
With these sensors, you can build automations that respond to real-time price data:
- Automatic battery charge trigger: When Agile price drops below 5p, set battery to force-charge from grid
- Automatic appliance scheduling: Find the cheapest three-hour window overnight and turn smart plugs on for that window
- Heat pump pre-heating: When overnight price is below 4p, run heat pump to pre-heat house and hot water cylinder
- EV departure charge optimisation: Calculate cheapest path to target SOC by departure time and schedule accordingly
The Home Assistant community forum has ready-made blueprints for many of these automations. Search "Octopus Agile" in the automation blueprints section. Most can be installed and configured without writing a single line of code. The investment is time, not coding skill.
Full Home Assistant setup from scratch takes a motivated beginner one to two weekend days. Many users report that the project itself is enjoyable and teaches a useful set of home network and automation skills. The ongoing maintenance is minimal once the system is running.
Households that reach Level 4 often report the highest satisfaction with Octopus Agile. Not just because of the savings, but because the system runs without conscious thought. You see the price dashboard, you know the automation is handling it, and you simply benefit.
Which level is right for you?
Here is an honest guide based on your situation:
- New to Agile? Start at Level 1. Spend two weeks building the nightly check habit. Assess whether the manual effort bothers you. Most people find it becomes second nature within a week.
- Comfortable with apps and want to reduce daily effort? Move to Level 2. One afternoon, two or three smart plug purchases, and the core automation is in place. This covers the vast majority of saving opportunities with minimal ongoing effort.
- Have an EV? Level 3 is your highest-ROI step. OHME or Zappi pays back in under two years from EV charging alone. Do this before investing in smart plugs.
- Technically curious, want maximum control, have battery or heat pump? Level 4. Home Assistant turns your home into a system that actively participates in the energy market. The weekend investment repays itself for years.
Return on investment at each level
| Level | Setup cost | Annual saving | Payback period | Effort after setup |
|---|---|---|---|---|
| Level 1: Manual daily check | £0 | £200-300 | Immediate | 3 min/day |
| Level 2: Smart plug timers | £45-75 | £300-400 | 2-3 months | Monthly review |
| Level 3: Smart EV charger | £800-1,200 | £500-700 | 18-24 months | Near zero |
| Level 4: Home Assistant | £60-150 | £700-900+ | 2-3 months | Occasional tweaking |
Note that the annual saving figures are cumulative. Level 2 includes Level 1 savings; Level 4 includes all previous levels. A household that implements all four levels can expect total annual savings of £900+ compared to an unoptimised standard tariff. The combined setup cost is under £200 if you already own an EV charger, less than one month's electricity bill for many households.
Check AgileAlert tonight to see the cheapest overnight window. That single action is Level 1. Everything else builds from there.