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Pembrokeshire CC

Industrial Solar and Electrical in Milford Haven

The single most energy-intensive postcode cluster in Wales

Postcodes
SA73
Local authority
Pembrokeshire CC
Drive from HQ
67 mi · 100 min
Solar yield
985 kWh/kWp
SA73 100 min from our Swansea base 985 kWh/kWp solar yield Commercial energy intensity: Very high Primary service area

Serving Milford Haven

Milford Haven carries a town population of approximately 13,000 and handles somewhere between 20 and 25 percent of UK gas imports through the Milford Haven Waterway. It is the single most energy-intensive postcode cluster in Wales and one of the most critical in the UK.

Major employers include Dragon LNG, South Hook LNG (the largest liquefied natural gas terminal in Europe), Valero Pembroke Refinery (the largest UK refinery by nameplate capacity), RWE Pembroke Power Station across the water, Puma Energy, and Ledwood Engineering. Commercial estate is anchored by Milford Waterfront, Pembroke Dock Marine and Havens Head Business Park.

The Celtic Freeport designation of 2023 combined with Celtic Sea floating offshore wind Round 5 leasing and hydrogen hub proposals (including HyPER and HyNet satellite schemes) makes this the most active UK energy-transition location outside the Humber. Milford Marina itself has developed as a retail and hospitality destination alongside the industrial port activity.

Landmarks include the waterway itself, Milford Marina, and the heritage associated with the late eighteenth-century planned-town foundation. The Celtic Freeport status brings a tax-advantaged procurement and investment environment that is actively being used by inward investors through 2024 to 2026.

For FLD, this is the most specialised industrial solar and electrical environment in the coverage area. Tier-2 and tier-3 supply-chain tenants across Valero, Dragon LNG, South Hook and RWE operate under explicit contractual decarbonisation obligations cascading from their headline customers and regulators. Commercial solar, battery storage, and electrical upgrade works sit near the top of their capex priority lists.

At 985 kWh/kWp PVGIS yield (the highest in South Wales), a 1 MW Havens Head Business Park tenant rooftop generates 985,000 kWh a year. With 80% self-consumption at 26p/kWh blended (heavy continuous industrial load), first-year benefit is approximately £218,000 on £850,000 capex. Simple payback 3.9 years, post-tax payback 2.8 years.

Drive time from Swansea is 100 minutes. We schedule Pembrokeshire days that consolidate Milford Haven, Pembroke and Haverfordwest visits, and we hold ConstructionLine for main-contractor framework tendering against Celtic Freeport procurement pipelines.

Commercial sites and business parks

Very high energy intensity

Milford Waterfront

Pembroke Dock Marine

Havens Head Business Park

Commercial solar estimate — Milford Haven

100 kWp reference system at 985 kWh/kWp

Modelled at 27p/kWh blended import, 15p/kWh SEG export, 80% self-consumption for very high energy intensity site.

98,500
kWh/yr
Annual generation
£24,231
per year
Annual saving
3.5
years
Simple payback
2.6
years (AIA)
Post-tax payback
Indicative only. Based on PVGIS irradiance data for Milford Haven. Actual figures depend on roof orientation, shading and tariff. Request a detailed survey.
Domestic solar

Housing stock in Milford Haven

Eighteenth-century planned-town grid, Victorian terraces, modern estates

A typical 4 kWp domestic install here generates 3,940 kWh/yr. With 40% self-consumption at 30p/kWh and 60% SEG export at 15p/kWh, first-year saving is approximately £827.

985
kWh/kWp/yr
PVGIS irradiance

Local landmarks and context

  • Milford Haven Waterway
  • Milford Marina

Major employers we work with

  • Dragon LNG
  • South Hook LNG
  • Valero Pembroke Refinery
  • RWE Pembroke
  • Puma Energy
  • Ledwood Engineering

Recent local developments

  • Celtic Freeport status
  • Celtic Sea floating offshore wind
  • Hydrogen hub proposals
From the blog

Guides for Milford Haven

Celtic Freeport commercial solar Milford Haven: SA73 offshore wind supply chain and enhanced allowances

Commercial solar for Milford Haven's Celtic Freeport zone -- offshore wind supply chain business payback models, enhanced capital allowances for Freeport-registered entities and SP Manweb G99 timelines for SA73.

5 min
Read

Domestic solar Milford Haven: SA73 waterway housing, LNG workforce households and Celtic Freeport growth

Domestic solar for Milford Haven SA73 -- LNG workforce household payback models, 990 kWh/kWp Pembrokeshire yield, Celtic Freeport residential growth context and battery storage for waterway properties.

4 min
Read

Solar panels Milford Haven and Pembroke: Celtic Freeport, energy port and SA73 opportunities

Commercial solar for the Milford Haven energy cluster: Celtic Freeport tax advantages, LNG supply-chain decarbonisation, and payback models for SA71 to SA73.

5 min
Read
FAQ

FAQs for Milford Haven

Yes. The Celtic Freeport, designated in 2023 and covering Milford Haven and Port Talbot, sits squarely inside our core coverage. We have active engagement with supply-chain tenants on rooftop solar and industrial electrical works across both port clusters, and we hold ConstructionLine accreditation for tier-1 main-contractor procurement frameworks operating inside the Freeport tax-advantaged zones.
At 30p/kWh grid electricity, a 100 kWp system generating 95,000 kWh/yr with 70% self-consumption delivers around £24,000 of year-one benefit against c. £85,000 capex, a 3.5-year simple payback. Under Annual Investment Allowance first-year 100% relief, post-tax payback is closer to 2.6 years. South Wales yields 940 to 985 kWh/kWp/year depending on postcode, comfortably enough for commercial solar to be cashflow positive from month one with a PPA.
A Power Purchase Agreement is a financing arrangement where we fund and install a rooftop solar system at no upfront cost. Your business buys the electricity the system generates at a fixed, RPI-indexed rate that is lower than your grid tariff. The PPA typically runs 10 to 25 years. At the end you can extend, buy out at a pre-agreed residual value, or have the system removed. It suits businesses that want immediate savings without capital outlay and that are credit-worthy with a stable site.
G99 is the Engineering Recommendation governing how generation equipment connects to the UK distribution network. For commercial solar above 16 A per phase, you need G99 approval from your District Network Operator before export. In South Wales that is National Grid Electricity Distribution (NGED, formerly Western Power Distribution). Type A connections are the standard sub-1 MW route, typically 3 to 6 months in 2026.
Yes. Typical FLD scope covers LV distribution, SCADA and BMS containment, lighting, fire alarm, CCTV, access control, intercom and data, all under a single NICEIC Approved Contractor sign-off. Reference project: Cardiff Crown Courts refurbishment, approximately £50,000.

Ready for a fixed-price quotation?

Speak to Paul directly. Most quotes turn around within five working days of a site survey.

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