Autonomy scoreLocal analysis
Edinburgh Home autonomy potential in Edinburgh (Scotland)
The strongest asset here is Rainwater. It is not, however, what pays your home the most: that is Low-carbon heating.
Annual potential, standard home
£4,940
Four items added up — each one is a separate decision, in whatever order suits you.
Overall score
52 /100
Growing
Edinburgh: 52/100 achievable autonomy with a recommended setup.
Solid potential — real, achievable gains in energy, water & food autonomy await.
What you could reach in Edinburgh
A typical home in Edinburgh can reach about 52% self-sufficiency with a right-sized solar, storage, rainwater and low-carbon heating setup — much of it backed by UK grants and 0% VAT. The figure sharpens once you enter your own home.
- ≈203 days a year off the grid — keep the fridge, lights, router and heating pump running straight from your own roof and battery, right through a winter outage.
- Rainwater self-reliance — ≈75,565 L harvested from a 100 m² roof covers the garden and toilet flushing, so hosepipe bans stop mattering.
- A real harvest — ≈251 kg of fresh vegetables over a ≈221-day frost-free season takes a genuine bite out of the weekly shop.
- A warm, low-bill winter — insulation plus a right-sized heat pump turns the local climate into low-carbon comfort and shields you from gas-price spikes.
From the most to the least profitable, here
What you could gain
-
Low-carbon heating25/100
~£3,251/yr
less heating after insulation + heat pump (−11,250 kWh/yr on 90 m², electric heating)
The detail
Realistic outlook
3,580 heating-degree-days: a high-efficiency heat pump is the lowest-carbon way to keep Edinburgh warm.
Watch-outs
A heat pump only pays off in a well-insulated envelope — insulate first, then size the unit.
Grants & tips
Boiler Upgrade Scheme: £7,500 towards an air-source heat pump (England & Wales); ECO4 and the Great British Insulation Scheme fund insulation, plus 0% VAT on heat pumps.
Heating-degree-days (base 18°C) : ≈ 3,580 HDD — Source: PVGIS, hourly ERA5 temperatures 2005–2015 (base 18°C).
-
Food growing58/100
~£738/yr
off the weekly shop — up to ≈251 kg/yr of fresh vegetables from 100 m²
The detail
Realistic outlook
With about 221 frost-free days, a household garden in Edinburgh supports two planting rotations a year.
Watch-outs
A productive garden needs space, decent soil and a few hours a week — start small and scale up.
Grants & tips
Council allotments (Allotments Act) give cheap growing plots; RHS and community-garden schemes support home food production.
Frost-free growing season : ≈ 221 days — Source: PVGIS, hourly ERA5 temperatures 2005–2015 (frost dates).
-
Solar energy53/100
~£691/yr
less electricity with 3 kWp on your roof (≈2,763 kWh/yr)
The detail
Realistic outlook
At 921 kWh/kWp per year, Edinburgh offers solid potential for residential rooftop solar.
Watch-outs
Roof orientation, shading and DNO connection rules affect real output — get an MCS-certified site assessment first.
Grants & tips
Smart Export Guarantee (SEG): your supplier pays for surplus solar exported to the grid, plus 0% VAT on residential solar PV and battery storage until 2027.
Annual PV yield : 921 kWh/kWp — Source: PVGIS 5.2 (EU Joint Research Centre), optimal tilt and local horizon.
-
Rainwater62/100
~£260/yr
less mains water with a 5,000 L tank (≈75,565 L/yr harvestable from a 100 m² roof)
The detail
Realistic outlook
889 mm of rain a year makes rooftop rainwater harvesting worthwhile in Edinburgh.
Watch-outs
Harvested rain is non-potable by default — keep it separate from drinking water and add a first-flush diverter.
Grants & tips
Many UK water companies offer subsidised or free water butts; on a metered supply, harvested rainwater cuts your water bill directly.
Average annual rainfall : 889 mm — Source: NASA POWER, MERRA-2 corrected precipitation.
£4,940
Ranked by annual value. The order of the works themselves does not change: insulate before you equip.
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Estimate your solar system in Edinburgh
Estimate your solar system in Edinburgh
Based on a local yield of 921 kWh/kWp per year.
Indicative estimate (production = kWp × local yield). Real output depends on roof orientation, shading and your self-consumption rate.
Climate month by month in Edinburgh
In Edinburgh, a 3 kWp array pitched at 42° and facing due south — the optimum PVGIS computes for this location — produces about 2,763 kWh a year. May is the strongest month, at about 363 kWh, and December the weakest, at 75 kWh. November to February bring 16% of the year's output — enough for a battery to cover winter evenings on sunny days, not through grey spells.
Every month averages below 15 °C in Edinburgh, so some heating is needed all year round; January is the coldest at 3.2 °C. In a typical year the coldest hours drop to about -3 °C, the point a heat pump has to be sized for: a standard air-to-water heat pump copes comfortably in an insulated house.
Frost is possible until early April and returns from mid-November, which leaves about 221 frost-free days; tender crops such as tomatoes, beans and squash go outside once early April is past. Days above 30 °C are rare, so summer care is mostly steady watering.
With a mean wind of 3.9 m/s at 10 m, a small rooftop turbine would produce little in Edinburgh; the roof is better used for solar. PVGIS's elevation model puts the southern horizon up to 6.9° high — terrain or tall buildings — which trims the low winter sun, so check shading on site before choosing panels.
Compared with Dundee, 58 km away, Edinburgh has 2% less solar yield, 17 more frost-free days and a heating need 3% higher. Compared with Glasgow, 67 km away, Edinburgh has 8% more solar yield, 17 more frost-free days and a heating need 2% higher.
| Month | Mean temperature | Solar output, 3 kWp |
|---|---|---|
| January | 3.2 °C | 93 kWh |
| February | 3.3 °C | 156 kWh |
| March | 4.6 °C | 243 kWh |
| April | 7.0 °C | 321 kWh |
| May | 9.3 °C | 363 kWh |
| June | 12.4 °C | 318 kWh |
| July | 14.3 °C | 330 kWh |
| August | 13.6 °C | 303 kWh |
| September | 12.0 °C | 258 kWh |
| October | 9.4 °C | 180 kWh |
| November | 5.8 °C | 126 kWh |
| December | 3.3 °C | 75 kWh |
Frequently asked questions — Edinburgh
How much could solar panels generate in Edinburgh?
A well-oriented 3 kWp rooftop array in Edinburgh produces about 2,763 kWh a year, worth roughly £691 in self-consumption. A 6 kWp system reaches about 5,526 kWh/yr where the roof allows. Smart Export Guarantee (SEG): your supplier pays for surplus solar exported to the grid, plus 0% VAT on residential solar PV and battery storage until 2027.
Is rainwater harvesting worth it in Edinburgh?
Yes. A 60 m² roof in Edinburgh can capture about 45,339 litres a year for the garden, WC and washing machine. Keep harvested rain separate from drinking water and fit a first-flush diverter. Many UK water companies offer subsidised or free water butts; on a metered supply, harvested rainwater cuts your water bill directly.
What grants help with low-carbon heating in Edinburgh?
Boiler Upgrade Scheme: £7,500 towards an air-source heat pump (England & Wales); ECO4 and the Great British Insulation Scheme fund insulation, plus 0% VAT on heat pumps. Insulate first — a heat pump only pays off in a well-insulated home (3,580 heating-degree-days here), so prioritise the roof and walls before sizing the unit.
How much food can a garden grow in Edinburgh?
With about 221 frost-free days, a 100 m² garden in Edinburgh yields roughly 251 kg of fresh fruit and vegetables a year — a partial share of a household's needs, not full calorie autonomy. Council allotments (Allotments Act) give cheap growing plots; RHS and community-garden schemes support home food production.
When is the last frost in Edinburgh?
Frost is possible until early April and returns from mid-November, which leaves about 221 frost-free days; tender crops such as tomatoes, beans and squash go outside once early April is past.
How much does solar produce in winter in Edinburgh?
December is the weakest month: a 3 kWp array makes about 75 kWh, against 363 kWh in May. November to February add up to 16% of the yearly total.
How this score is calculated
Public climate data (PVGIS, European Commission) weighted by how vital each dimension is. The score sharpens once you enter your own home. See the full methodology.
Sources
- Solar energy — Source: PVGIS 5.2 (EU Joint Research Centre), optimal tilt and local horizon.
- Rainwater — Source: NASA POWER, MERRA-2 corrected precipitation.
- Food growing — Source: PVGIS, hourly ERA5 temperatures 2005–2015 (frost dates).
- Low-carbon heating — Source: PVGIS, hourly ERA5 temperatures 2005–2015 (base 18°C).
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