# Renewably (remote · renewably.uk)

Cheapest and greenest times to use electricity in Great Britain, and which tariff suits a home.

- Trust score: 70/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `renewably.uk`: 70/100 (this document), [markdown](https://verifymcp.io/servers/uk-renewably-gb-electricity-prices-and-tariffs/renewably-2.md), [page](https://verifymcp.io/servers/uk-renewably-gb-electricity-prices-and-tariffs/renewably-2)

## Channel facts

- Endpoint: `https://renewably.uk/mcp?via=registry`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.12.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 51/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 6806 tokens (~680/item across 10 items; 10 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Renewably MCP server?

Renewably is a hosted endpoint at https://renewably.uk/mcp?via=registry, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http uk-renewably-gb-electricity-prices-and-tariffs 'https://renewably.uk/mcp?via=registry'
```

### Cursor

```json
{
  "mcpServers": {
    "uk-renewably-gb-electricity-prices-and-tariffs": {
      "url": "https://renewably.uk/mcp?via=registry"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "uk-renewably-gb-electricity-prices-and-tariffs": {
      "type": "http",
      "url": "https://renewably.uk/mcp?via=registry"
    }
  }
}
```

### Codex

```toml
[mcp_servers.uk-renewably-gb-electricity-prices-and-tariffs]
url = "https://renewably.uk/mcp?via=registry"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "uk-renewably-gb-electricity-prices-and-tariffs": {
      "type": "remote",
      "url": "https://renewably.uk/mcp?via=registry",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add uk-renewably-gb-electricity-prices-and-tariffs --url 'https://renewably.uk/mcp?via=registry' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  uk-renewably-gb-electricity-prices-and-tariffs:
    url: "https://renewably.uk/mcp?via=registry"
```

### Netclaw

```json
{
  "McpServers": {
    "uk-renewably-gb-electricity-prices-and-tariffs": {
      "Transport": "http",
      "Url": "https://renewably.uk/mcp?via=registry"
    }
  }
}
```

### Vellum

```bash
assistant mcp add uk-renewably-gb-electricity-prices-and-tariffs -t streamable-http -u 'https://renewably.uk/mcp?via=registry'
```

### Other

```json
{
  "mcpServers": {
    "uk-renewably-gb-electricity-prices-and-tariffs": {
      "type": "http",
      "url": "https://renewably.uk/mcp?via=registry"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 70, 0)

- [functional] Server version: 1.13.0 → 1.14.0

### 2026-11-04 (score 70, +1)

- [functional improvement] Stability: unverified → 0.03
- [functional] Server version: 1.12.0 → 1.13.0
- [cosmetic] “plan_home_battery” added an optional parameter “ceiling”

### 2026-11-03 (score 69)

First indexed and scored.

## MCP tools (10)

### `list_regions` (~104 tokens)

Regions

The 14 Agile regions (GSP groups), each with well-known places in it - to place a home by its town. The regions are the local electricity networks' areas, not counties, so some places surprise (Milton Keynes and Coventry are in the East Midlands, Croydon in South East England, York in North East England). The surest way: the first two digits of the 13-digit MPAN on the home's electricity bill (`mpan_prefix`).

### `list_tariffs` (~78 tokens)

Tariffs

The time-of-use and standard tariffs from Octopus, EDF and E.ON Next that the `tariff` parameter accepts – or, with `direction=export`, their export tariffs (for get_prices and `export`), each saying which homes can have it.

Input parameters:

- `direction` (string): `import` (default) or `export`.

### `get_prices` (~430 tokens)

Prices

Half-hourly prices for a region from midnight today. On Agile (the default) and Agile Outgoing, each is published by Octopus or estimated by Renewably (flagged `estimate`); other tariffs show only their supplier's published prices. An export tariff's are what it pays for export (and take no panels).

Input parameters:

- `days` (integer): Days from today, 1-5 (default 2: today and tomorrow).
- `export` (string): How export is paid: `paired` (the tariff's own export tariff, default), `fixed` (with export_rate), `fit` (the Feed-in Tariff's deemed export: paid whatever is exported, so the sun used at home gives…
- `export_rate` (number): A fixed export rate, p/kWh (0-100).
- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.
- `solar_facing` (string): The way they face: S, SE, SW, E, W, NE, NW or N – or a bearing in degrees (south is 180). Default S.
- `solar_inverter_kw` (number): The inverter's limit, kW (0.5-50), if smaller than the panels.
- `solar_kwp` (number): The home's solar panels, kWp (0.2-50): the answer then counts their forecast spare sun – see the docs' Solar panels section.
- `solar_pitch` (number): Their angle from flat, degrees (0-90, default 35).
- `tariff` (string): A tariff's key from list_tariffs (default `agile`) – an import tariff, or an export tariff from list_tariffs?direction=export (eg `agile-outgoing`), for what it pays.

### `find_cheapest_window` (~501 tokens)

Cheapest window

The cheapest (or lowest-carbon) run of `duration_hours` starting from the next half hour and finishing by the next `finish_by` – when to set a washing machine or dishwasher's delay timer.

Input parameters:

- `duration_hours` (number): How long it runs, 0.5-12 in half hours (default 3.5).
- `export` (string): How export is paid: `paired` (the tariff's own export tariff, default), `fixed` (with export_rate), `fit` (the Feed-in Tariff's deemed export: paid whatever is exported, so the sun used at home gives…
- `export_rate` (number): A fixed export rate, p/kWh (0-100).
- `finish_by` (string): Local time it must finish by, HH:MM (default 07:00) – the next one at least `duration_hours` away.
- `kwh` (number): Energy the run uses, kWh (0-20), for its cost – on the energy label, or kW times hours. Leave out for no cost.
- `optimise` (string): `cost` (default) or `carbon` (NESO's regional forecast, about two days ahead).
- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.
- `solar_facing` (string): The way they face: S, SE, SW, E, W, NE, NW or N – or a bearing in degrees (south is 180). Default S.
- `solar_inverter_kw` (number): The inverter's limit, kW (0.5-50), if smaller than the panels.
- `solar_kwp` (number): The home's solar panels, kWp (0.2-50): the answer then counts their forecast spare sun – see the docs' Solar panels section.
- `solar_pitch` (number): Their angle from flat, degrees (0-90, default 35).
- `tariff` (string): A tariff's key from list_tariffs (default `agile`), eg `go`, `edf-go-electric`, `eon-next-drive`.

### `plan_ev_charging` (~581 tokens)

EV charging plan

The cheapest or greenest half hours to charge an electric car by a ready-by time up to four days ahead.

Input parameters:

- `battery` (number): Usable battery, kWh (5-200, default 60).
- `charger` (number): Charging power, kW (1-22, default 7.4).
- `day` (string): Ready-by day: today, tomorrow, in2 or in3 (default: the next time `time` comes round, at least four hours away).
- `efficiency` (integer): Charging efficiency, % (60-100, default 90).
- `export` (string): How export is paid: `paired` (the tariff's own export tariff, default), `fixed` (with export_rate), `fit` (the Feed-in Tariff's deemed export: paid whatever is exported, so the sun used at home gives…
- `export_rate` (number): A fixed export rate, p/kWh (0-100).
- `mode` (string): `timer` (one unbroken block, default) or `smart` (any half hours).
- `mpk` (number): Miles per kWh, for the per-mile figures (1.5-6, default 3.3).
- `now` (integer): Charge now, % (0-100, default 30).
- `optimise` (string): `cost` (default) or `carbon`.
- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.
- `solar_facing` (string): The way they face: S, SE, SW, E, W, NE, NW or N – or a bearing in degrees (south is 180). Default S.
- `solar_inverter_kw` (number): The inverter's limit, kW (0.5-50), if smaller than the panels.
- `solar_kwp` (number): The home's solar panels, kWp (0.2-50): the answer then counts their forecast spare sun – see the docs' Solar panels section.
- `solar_pitch` (number): Their angle from flat, degrees (0-90, default 35).
- `target` (integer): Target charge, % (0-100, default 80).
- `tariff` (string): A tariff's key from list_tariffs (default `agile`), eg `go`, `edf-go-electric`, `eon-next-drive`.
- `time` (string): Ready-by local time, HH:MM (default 07:00).

### `get_heat_pump_times` (~402 tokens)

Heat pump times

For a typical weekday and weekend day at this time of year (on a fixed-window or flat tariff, today's rates): the cheapest time to reheat hot water (and the cheapest ready by 07:00), and the cost of each kWh of heat by hour – price divided by a generic air-source heat pump's efficiency at that hour's typical temperature.

Input parameters:

- `export` (string): How export is paid: `paired` (the tariff's own export tariff, default), `fixed` (with export_rate), `fit` (the Feed-in Tariff's deemed export: paid whatever is exported, so the sun used at home gives…
- `export_rate` (number): A fixed export rate, p/kWh (0-100).
- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.
- `solar_facing` (string): The way they face: S, SE, SW, E, W, NE, NW or N – or a bearing in degrees (south is 180). Default S.
- `solar_inverter_kw` (number): The inverter's limit, kW (0.5-50), if smaller than the panels.
- `solar_kwp` (number): The home's solar panels, kWp (0.2-50): the answer then counts their forecast spare sun – see the docs' Solar panels section.
- `solar_pitch` (number): Their angle from flat, degrees (0-90, default 35).
- `tariff` (string): A tariff's key from list_tariffs (default `agile`), eg `go`, `edf-go-electric`, `eon-next-drive`.

### `get_home_battery_times` (~629 tokens)

Home battery charge times

For a typical weekday and weekend day at this time of year (on a fixed-window or flat tariff, today's rates): the cheapest charge slot to fill a home battery before the 16:00 peak, an optional afternoon top-up, and what it saves a home using `usage` kWh a year – the battery runs the house after its charge until it's empty, through a typical day's use. No export, and not counting the battery's wear; with `solar_kwp`, also how full to charge overnight for the next day's sun.

Input parameters:

- `battery` (number): Usable battery, kWh (2-50, default 10).
- `battery_export` (string): What the battery may export: `terms` (default) what the export tariff pays for – everything on Octopus's, only what the panels put in on the others; `all` what it charged from the grid too, on any ex…
- `export` (string): How export is paid: `paired` (the tariff's own export tariff, default), `fixed` (with export_rate), `fit` (the Feed-in Tariff's deemed export: paid whatever is exported, so the sun used at home gives…
- `export_rate` (number): A fixed export rate, p/kWh (0-100).
- `rate` (number): Grid charge rate, kW (0.5-15, default 3).
- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.
- `solar_facing` (string): The way they face: S, SE, SW, E, W, NE, NW or N – or a bearing in degrees (south is 180). Default S.
- `solar_inverter_kw` (number): The inverter's limit, kW (0.5-50), if smaller than the panels.
- `solar_kwp` (number): The home's solar panels, kWp (0.2-50): the answer then counts their forecast spare sun – see the docs' Solar panels section.
- `solar_pitch` (number): Their angle from flat, degrees (0-90, default 35).
- `tariff` (string): A tariff's key from list_tariffs (default `agile`), eg `go`, `edf-go-electric`, `eon-next-drive`.
- `usage` (number): The home's electricity use, kWh a year (500-30000, default 2500 – an average home).

### `plan_home_battery` (~974 tokens)

Home battery plan

A home battery's plan from the half hour under way to the end of tomorrow, on the tariff's real prices (Agile's, and Agile Outgoing's, estimated beyond what Octopus has published), half hour by half hour: charge from the grid, hold, run the house (self-use), export, or send the sun to the grid – the cheapest way through, counting the battery's losses and wear. Exporting follows what the export tariff pays for – everything on Octopus's, only what the panels put in on the others – unless `battery_export=all` says the home is paid for what the battery charged from the grid too. A battery without panels gives `export` (Octopus's `outgoing`, `agile-outgoing` or `prime-outgoing`, `eon-next-export-premium` for a battery E.ON fitted, or `fixed` with `export_rate`) and trades on the grid: charging cheap, exporting at the peak. Smart Export Guarantee tariffs pay only for what panels made, so not a battery on its own. `now` is what to set this half hour; `settings` the few changes worth typing into the inverter's app. For a typical home of `usage`; give `soc` (the battery's charge now) for a plan from where it is. Advice and data for the owner's own automation – Renewably never controls a battery.

Input parameters:

- `battery` (number): Usable battery, kWh (2-50, default 10).
- `battery_export` (string): What the battery may export: `terms` (default) what the export terms pay for – on Octopus's export tariffs everything, on the others only what the panels put in; without panels everything, once `expo…
- `ceiling` (number): Never charged above this, per cent (10-100, default 100; above `reserve`) – for an inverter set to stop short of full.
- `export` (string): How export is paid: `paired` (the tariff's own export tariff, default), `fixed` (with export_rate), `fit` (the Feed-in Tariff's deemed export: paid whatever is exported, so the sun used at home gives…
- `export_limit` (number): The home's export limit, kW (0-30, default 3.68: a G98 connection).
- `export_rate` (number): A fixed export rate, p/kWh (0-100).
- `grid_charging` (string): `1` (default) may charge from the grid; `0` only from the panels.
- `rate` (number): Charge and discharge rate, kW (0.5-15, default 3).
- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.
- `reserve` (number): Never below this, per cent (0-90, default 0).
- `round_trip` (number): Round-trip efficiency, per cent (60-100, default 90).
- `soc` (number): The battery's charge now, per cent (0-100). Default: at its reserve.
- `solar_facing` (string): The way they face: S, SE, SW, E, W, NE, NW or N – or a bearing in degrees (south is 180). Default S.
- `solar_inverter_kw` (number): The inverter's limit, kW (0.5-50), if smaller than the panels.
- `solar_kwp` (number): The home's solar panels, kWp (0.2-50): the answer then counts their forecast spare sun – see the docs' Solar panels section.
- `solar_pitch` (number): Their angle from flat, degrees (0-90, default 35).
- `tariff` (string): A tariff's key from list_tariffs (default `agile`), eg `go`, `edf-go-electric`, `eon-next-drive`.
- `usage` (number): The home's electricity use, kWh a year (500-30000, default 2500).
- `wear` (number): The battery's wear for each kWh it gives back, pence (0-20, default 2).

### `plan_home` (~2596 tokens)

Your home

A home's past year on every tariff in list_tariffs and at Ofgem's price cap – and what switching tariff, an electric car, a heat pump, solar panels or a battery would save, each added to everything before it (tariff, car, heating, solar, battery). Each of car, heating, solar and battery is something the home has (it explains the bill) or is considering. Totals are electricity, gas at the price cap and petrol or diesel – only what changes.

Input parameters:

- `appliance` (string): With heating=solid: `stove` (a stove or boiler, default) or `fire` (an open fire).
- `aspect` (string): The way the panels face: S (default), SE, SW, E, W, NE, NW, N.
- `aspect2` (string): The second face's direction: S (default), SE, SW, E, W, NE, NW, N.
- `aspect3` (string): The third face's direction.
- `battery` (string): `no` (default), `have`, or `consider`.
- `battery_charge_kw` (number): Battery charging power, kW (0.5-15, default `battery_kw`).
- `battery_cost` (number): With battery=consider: the quote, £ (0-100000; no default – no payback without one).
- `battery_discharge_kw` (number): Battery discharging power, kW (0.5-15, default `battery_kw`).
- `battery_export` (string): What the battery may export: `never`, even where the export tariff peaks; `solar`, only what it stored from the panels, even on Octopus's; `terms` (default), what the terms pay for – on Octopus's any…
- `battery_kw` (number): Battery power, kW (0.5-15, default 3).
- `battery_kwh` (number): Battery, usable kWh (0.5-40, default 5).
- `bearing` (number): Or the exact compass bearing the panels face, degrees (0-359; south 180). Replaces `aspect`.
- `boiler` (string): With consider_heat_pump=1: `condensing` (default) or `older` (pre-2005).
- `boost` (string): With heating=storage: the share of their heat from evening boost at the day rate, % (0, 10 or 25; default 10).
- `car` (string): What the home drives now: `petrol` (default) or `diesel` (counted only with consider_ev=1), `ev` (the bill includes an electric car), or `none`.
- `charge_eff` (number): Car charging efficiency, % (70-100, default 90).
- `charger` (number): Home charger, kW (2-22, default 7).
- `consider_ev` (string): With a petrol or diesel car: 1 to see what an electric car replacing it would save (default 0).
- `consider_heat_pump` (string): With a boiler (heating=gas, oil or lpg), wood or coal (heating=solid), or storage or electric heaters (heating=storage or electric): 1 to see what a heat pump replacing them would save (default 0).
- `daytime` (string): Whether anyone's home in the day: `usual` (default), `out` (rarely – out at work), or `home` (most days). Decides how much of the panels' output the home uses.
- `export` (string): How export is paid: `paired` (default: each tariff's own export tariff), `fixed` (at `export_rate`), `fit` (the Feed-in Tariff's deemed export), `none`, or an export tariff's key from list_tariffs?di…
- `export_limit` (number): Export limit set by the network operator, kW (0.5-50; default none).
- `export_rate` (number): Your fixed export rate, p/kWh (0-100, default 12), with `export=fixed`.
- `gas` (number): With heating=gas and consider_heat_pump=1: gas a year on the bill, kWh (1000-60000, default 9500).
- `heat_amount` (number): With heating=solid and consider_heat_pump=1: how much the home buys a year – logs in loose cubic metres, pellets and coal in kg (0.1-50000). Needed, with heat_spend.
- `heat_litres` (number): With heating=oil or lpg and consider_heat_pump=1: litres a year (100-10000; default as much heat as 9500 kWh of gas).
- `heat_ppl` (number): With heating=oil or lpg and consider_heat_pump=1: what's paid a litre, pence (20-300). Oil defaults to a recent national average; LPG has no default and needs it.
- `heat_spend` (number): With heating=solid and consider_heat_pump=1: what the home spends on it a year, £ (10-20000). Needed, with heat_amount.
- `heater_kwh` (number): With heating=storage or electric: the heaters' own use, kWh a year, if known (0-30000; default estimated). Hot water is taken as an immersion heater.
- `heating` (string): What heats the home now: `gas` (default), `oil` or `lpg` (a boiler), `solid` (wood or coal: `solid_fuel` says which) – counted only with consider_heat_pump=1 – `heat_pump` (the bill includes one), `s…
- `hp_cost` (number): With consider_heat_pump=1: the quote after grants, £ (0-100000; default typical, outside Scotland).
- `hp_kwh` (number): With heating=heat_pump: its own use, kWh a year, if known (0-20000; default estimated).
- `inverter_kw` (number): Solar inverter rating, kW (0.5-50; default no limit).
- `keep_gas` (string): With consider_heat_pump=1: 1 to keep gas for cooking (default 0).
- `kwp` (number): Panels, kWp (0.2-50; default 4 on a roof, 0.8 for a plug-in kit, at most 2) – the first roof face's, with more faces.
- `kwp2` (number): Roof panels on a second face, kWp (0.2-50), with `aspect2` and `tilt2` – and `kwp3`, `aspect3`, `tilt3` for a third. One inverter for them all.
- `kwp3` (number): Roof panels on a third face, kWp (0.2-50).
- `miles` (number): Car miles a year (500-40000, default 7100).
- `mount` (string): With panels=plug_in: its angle from flat – 90 (upright on a balcony or wall, default), 60 (leaning), 30 (on a stand), 10 (flat).
- `mpg` (number): With consider_ev=1: its real-world mpg (10-120; default the average car on the road, 36 petrol, 42 diesel).
- `mpk` (number): Electric car, miles per kWh at the battery (1.5-6, default 3.3).
- `night_gmt` (string): `1`: the meter keeps GMT, so its night hours are an hour later in summer (default `0`).
- `night_start` (string): The meter's seven night hours, for Economy 7 tariffs and meter-switched heaters: the half hour they start, 0-47 local (44 is 22:00 ... 3 is 01:30; default 1, 00:30-07:30).
- `panels` (string): With solar=have or consider: `roof` (default) or `plug_in` (a plug-in kit: its inverter capped at 800 W, export unpaid, panels up to 2 kWp).
- `pitch` (string): The roof: 35 (pitched, default), 20 (shallow), 50 (steep), 10 (flat).
- `plug_in` (integer): Hour the car is plugged in, 0-23 local (default 18).
- `plug_out` (integer): Hour it's unplugged, 0-23 local (default 7; the same as `plug_in`: always plugged in).
- `ppl` (number): With consider_ev=1: what you pay, p/litre (50-400; default the UK weekly average over the past year).
- `preheat` (string): With heating=electric: `1` to heat from 1pm rather than 4pm–7pm when that's cheaper (default `0`).
- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.
- `replacing` (string): With consider_heat_pump=1: 1 if the boiler is due for replacing anyway (default 0).
- `round_trip` (number): Battery round-trip efficiency, % (60-100, default 90).
- `scop` (number): With consider_heat_pump=1: the installer's seasonal efficiency for heating (1.5-6; default a typical installation).
- `shift` (string): Share of everyday use run at the day's cheapest times, % (0, 15 or 30; default 0) – for fine-tuning.
- `solar` (string): `no` (default), `have`, or `consider`.
- `solar_cost` (number): With solar=consider: the quote or kit price, £ (0-100000; default typical).
- `solid_fuel` (string): With heating=solid: `logs` (default), `pellets` or `coal` (coal or smokeless fuel).
- `standby_w` (number): Battery standby draw, W (0-200, default 20).
- `standing` (number): With tariff=custom: its standing charge, p/day (0-200).
- `storage_kw` (number): With heating=storage: all the heaters' input power together, kW (1-30, default 6).
- `storage_meter` (string): With heating=storage: `1` (default) the meter switches them on in its night hours (and Snug Octopus can schedule them), `0` their own timer, in the cheapest night half hours.
- `switch` (string): 1 (default) to find the best tariff at each step, staying put included; 0 to keep `tariff` throughout.
- `tariff` (string): The tariff the home is on: `price-cap` (default), a key from list_tariffs, `tracker` (Octopus Tracker, off sale but priced for the homes on it), or `custom` with `unit` and `standing`.
- `tilt` (number): Or their exact angle from flat, degrees (0-90). Replaces `pitch` (or `mount`).
- `tilt2` (number): The second face's angle from flat, degrees (0-90, default 35).
- `tilt3` (number): The third face's angle from flat, degrees (0-90, default 35).
- `unit` (number): With tariff=custom: its unit rate, p/kWh (5-100).
- `usage` (number): Electricity a year as on the bill, kWh – what's bought now (500-30000, default 2500).

### `get_flexibility_events` (~192 tokens)

Flexibility events

When the grid operator, NESO, is asking homes in a region to use less electricity (often the evening peak) or more (often in Scotland, when there's more wind than the grid can carry south), through its Demand Flexibility Service: live events from now to the end of tomorrow, usually announced the same morning. Households can sometimes get paid for taking part – but only if they've signed up to a scheme with their energy supplier or another provider (eg Octopus's Saving Sessions), and that provider is taking part in the event; it tells them and says what it pays. These are NESO's requests to such providers. Without a scheme, shifting use still helps the grid but isn't paid.

Input parameters:

- `region` (string, required): Agile region: a letter A-P or the slug from list_regions (eg `C` or `london`); list_regions lists well-known places in each.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/uk-renewably-gb-electricity-prices-and-tariffs/renewably-2#diagnostics

## Score history

- 2026-11-05: 70
- 2026-11-04: 70
- 2026-11-03: 69

## Common questions

### What is the Renewably MCP server?

Renewably is an MCP server listed in the public MCP registry as uk.renewably/gb-electricity-prices-and-tariffs. Cheapest and greenest times to use electricity in Great Britain, and which tariff suits a home. This page covers its hosted endpoint (https://renewably.uk/mcp?via=registry).

### Is the Renewably MCP server safe to use?

Renewably scores 70 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Renewably MCP server expose?

Renewably exposes 10 tools: list_regions, list_tariffs, get_prices, find_cheapest_window, plan_ev_charging, and 5 more. Their descriptions and schemas cost roughly 6,487 tokens of context every time the server is loaded.

### Does the Renewably MCP server require authentication?

No. We connected to Renewably without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Renewably MCP server still maintained?

Renewably is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://renewably.uk/mcp?via=registry
- Website: https://renewably.uk/api/v1/docs
- Changelog RSS feed: https://verifymcp.io/servers/uk-renewably-gb-electricity-prices-and-tariffs/renewably-2.xml
- Changelog JSON feed: https://verifymcp.io/servers/uk-renewably-gb-electricity-prices-and-tariffs/renewably-2.json
- HTML version of this page: https://verifymcp.io/servers/uk-renewably-gb-electricity-prices-and-tariffs/renewably-2