Climate
Cleddau River benefits from two river habitat restoration projects
A RESTORATION project with ambitions to make a Pembrokeshire river more resilient to the challenges of the climate and nature emergencies is making great strides.
The Natural Resources Wales’ (NRW) Four Rivers for LIFE project team began work to restore the Western Cleddau River in Pembrokeshire in October 2023, with the goal of creating valuable habitat for important fish and wildlife.
The Western Cleddau is designated a Special Area of Conservation (SAC) and has been heavily modified in the past. Dredging and straightening of some parts of the river has significantly affected the condition and health of the river habitat.
The first project saw the introduction of several pieces of large wood into the river to mimic the natural processes that happen when trees fall into rivers.
Introducing wood narrows the river channel and forces the water around the wood causing localised erosion and creating new meanders.
As material from the erosion deposits in the flow shadow of the wood over time, new gravel, sand and silt bars will be created which will, in turn, create vital habitat and areas for important fish such as lamprey and trout to spawn and raise their young.
The wood also provides shelter for fish from fast flows, shade and cooler water, and cover from predators.
Nathan Walton, Reserves Manager West and Wildlife Trust Officer for Pembrokeshire said: “The installation of a number of woody structures in the river is working well. The root plates are helping to slow water flow and encourage the natural re-meandering of the watercourse.
“Water levels are much higher than before, and areas of the reserve are now becoming wetter. This enhances the open water and fen features of the reserve and the species dependent on them.
“We are extremely grateful to the project for recent works on the upper reaches of the western Cleddau that passes through Llangloffan Fen.”
Llangloffan Fen is a lowland wetland in the upper part of the Western Cleddau river SAC. The fen is a national nature reserve managed in parts by the Wildlife Trust of South and West Wales (WTSWW), Natural Resources Wales (NRW) and some private landowners.
The second project saw the re-introduction of large boulders into a stretch of the Western Cleddau River, near Letterston village.
The boulders are believed to have been removed from the river as part of historic dredging in the late 1960s. This was confirmed by the presence of similar types and sizes of boulders found nearby. These boulders showed clear signs of weathering and erosion as opposed to bank protection boulders, which are quarried and angular in shape.
Introducing the boulders will create more natural flow diversity, as water speeds up on either side of the boulder and slows down upstream and downstream.
These different flow types create perfect conditions for different insects which are part of the food chain that supports species like salmon and otters.
The calm water flows also offer rest areas for fish, as they move up and downstream and swim from boulder to boulder to save energy.
Duncan Dumbreck from the Four Rivers for LIFE project said: “Historic surveys of fish and aquatic insects have found a mix of trout, lamprey, bullhead and stickleback in this part of the river.
“This regenerated habitat will be vital to the survival of species like salmon, which are at risk of becoming extinct in some rivers in Wales.”
Habitat recovery is a very slow process and can take hundreds of years. This work will boost the recovery process by using methods that would naturally occur.
Both projects were funded by the Four Rivers for LIFE Project, an EU LIFE funded programme looking to restore freshwater habitats for rare and important species.
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Climate
Welsh windfarms to power major construction materials firm
A MAJOR construction materials company has signed a long-term deal to use renewable energy from Welsh windfarms as part of efforts to cut carbon emissions.
Energy firm RWE has agreed a 15-year contract to supply electricity to Breedon Group plc, which operates sites across Great Britain producing materials including concrete, asphalt and cement.
Under the agreement, RWE will provide around 70 gigawatt hours of renewable electricity each year from its windfarm portfolio.
The power will initially come from the Gwynt y Môr offshore windfarm, about 24km off the coast of North Wales in the Irish Sea. From 2033, supply will switch to the Brechfa Forest West onshore windfarm in Wales.
The electricity will support the production of key building materials, helping Breedon reduce emissions linked to its energy use in a sector widely regarded as difficult to decarbonise.
RWE said the agreement highlighted the role renewable energy can play in helping heavy industry move towards lower-carbon operations.
Olaf Lubenow, head of commodity solutions at RWE, said: “This agreement underlines our commitment to supporting the construction materials sector on its journey towards a more sustainable future.
“By supplying renewable electricity from our wind portfolio, we are helping to reduce the carbon footprint of Breedon’s operations.”
Breedon said the deal would also provide long-term energy stability while supporting its wider sustainability plans.
Donna Hunt, the company’s sustainability director, said the agreement marked “a meaningful step forward”.
She said: “It secures long-term energy supply and helps accelerate the reduction of emissions from our operations.”
The company has set targets to cut emissions across its business by more than 20% by 2030 and to reach net zero by 2050.
The agreement reflects a growing trend of major industrial firms turning to renewable energy to help meet climate targets while managing rising energy costs.
Business
Pembroke Power Station National Grid shutdown power plans
A CALL to site specialist diesel generators at Pembroke Power Station to help keep the lights on in the event of a National Grid shutdown has been lodged with county planners.
In a screening application to Pembrokeshire County Council, RWE Generation UK PLC, through Ove Arup & Partners Ltd, wants to site up to six containerised diesel generators, diesel storage tank(s) and electrical connections at Pembroke Power Station, Pwllcrochan, near Pembroke.
The application site is within the site of the existing Pembroke Power Station, a combined-cycle gas turbine (CCGT) station which began commercial operation in September 2012, with a gross consented capacity of about 2,199 megawatts electric (MWe), replacing the previous oil-fired power station which operated for almost 30 years and was decommissioned in 1999.
A supporting statement says, subject to confirmation, it is considered to comprise permitted development, the scheme “a standalone plant, with its own fuel supply, capable of starting up, operating and shutting down independently from the power station”.
It adds: “It is required only in an emergency to maintain plant status and keep the power station operationally ‘ready’ in the event of a total or partial shutdown of the National Grid system. It is not required for the normal operation of the power station and does not extend its capacity, which remains as already consented, therefore it is not considered a change or extension.”

On need, it says it is mandatory that all electricity generators of over a megawatt have to adopt a new minimum standard of asset resilience; power stations “must be capable of restoring demand on the National Grid electricity transmission system in the event of a total or partial shutdown of the National Grid system”.
“The Power Station does not currently meet this new asset resilience standard, therefore new back-up power, control philosophy and on-site services that support site critical systems enabling the power station to remain ready to operate must be implemented.
“RWE is required to install a new enhanced emergency site auxiliary solution (diesel generators and diesel storage tanks) at the power station for resilience against the failure of the interconnected electricity distribution network into which it is normally connected in order to satisfy the Grid Code requirements by the mandated implementation deadline of December 31, 2026.
“RWE will make operational and fuelling provision, within its new resilience design at Pembroke power station of up to 120 hours, in order to provide capability to a slightly enhanced standard known to be valued by the National Energy System Operator (‘NESO’) in certain emergency network scenarios.”
It says construction is hoped to start in July 2026, lasting approximately nine to 12 months, the main part across the summer months.
The call will be considered by county planners at a later date.
Business
Pembrokeshire St Brides Castle biomass and solar scheme
PLANS for a green energy scheme at a Pembrokeshire former country house which is now holiday apartments have been given the go-ahead.
In an application to Pembrokeshire Coast National Park, HPB Ltd, through agent Acanthus Holden Architects, sought permission for a biomass boiler plant and installation of 16 rows of solar panels to the south of the tennis courts, St Brides Castle, St Brides, along with the removal of two tennis courts, two polytunnels, two sheds and relocation of a container.
Marloes and St Brides Community Council: Supporting
An officer report recommending approval said: “St Brides Castle. Listed Grade II* is a former country house (now holiday apartments) just south-west of the small settlement of St Brides.
“The house and its listed ancillary buildings stand prominently within a large grade-II-registered park and garden. The development site lies immediately south of the registered asset, outside of its boundary.”
It added: “Although in a sensitive location, the proposed scheme is well-screened, utilising an existing hedged enclosure. The proposed panels do not protrude over the hedge line, the proposed extra planting to the south and west providing further screening. The proposed building, also well-screened, is of traditional design, proportions and materials.”
The application was conditionally approved by park planners.
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