Solar Battery Storage: Disadvantages, Safety Features and Trade-Offs
A battery can reduce evening electricity purchases without making a house independent of the grid. It can also provide backup, but only through the right equipment and installation. Understanding those limits is part of choosing well, not a reason to dismiss storage. For UK households, solar battery storage involves an upfront cost, conversion losses and decisions about where equipment belongs. A useful home battery storage assessment weighs those drawbacks against measurable benefits, with safety features examined as part of the complete installation rather than as isolated claims. Put the drawbacks beside the intended benefit The value of solar battery storage depends on what the household needs to shift from one time of day to another. If little surplus is available, or most electricity is already used during solar hours, the battery may have less useful work to do. Upfront expenditure The Energy Saving Trust describes battery costs as dependent on type and size, with a broad range from £1,500 to £10,000. That range is context, not an OCEAN 2 Plus quotation. Obtain a property-specific installed price and compare identical scopes. Losses during operation Charging and discharging do not return every unit of input energy to appliances. The financial calculation should include those losses, plus any export income given up when solar is stored. Otherwise, the model exaggerates the value of each unit moved into the evening. A finite energy budget Storage shifts energy; it does not create it. A battery that empties on a dark winter evening needs another charging opportunity. Increasing capacity alone cannot compensate for a persistent shortage of solar input or an operating plan that leaves no suitable charging period. Examine the protection around the battery EcoFlow’s home battery storage product page describes ten protection layers for OCEAN 2 Plus, divided into six passive and four active layers. Read that alongside the operating instructions. A protection architecture is useful evidence about design, but it does not make every installation location appropriate. Cell chemistry The product uses lithium iron phosphate, commonly abbreviated LFP. Chemistry is one part of the safety design, alongside monitoring, protective devices and installation. Avoid describing any rechargeable battery as risk-free merely because its cell chemistry differs from that of another product. Fire detection and alarms PAS 63100:2024 includes fire-detection provisions for certain indoor battery locations, including requirements that may apply to infrequently visited areas such as store cupboards. Battery-app alerts should not be treated as a substitute for any fire detection or alarm measures required by the applicable design. The installer should confirm the requirements for the proposed location. Siting and fire separation Within its scope, PAS 63100:2024 gives preference to outdoor installation where reasonably practicable and places restrictions on certain indoor locations, including areas associated with sleeping accommodation and escape routes. Indoor installations may require additional assessment and protective measures depending on the proposed location. It is a technical specification, not a substitute for applicable law; verify its scope and the project’s design basis. Environmental protection EcoFlow specifies IP66 protection and indoor or outdoor options. Those statements do not remove temperature, access or siting requirements. The bottom-module immersion claim also has specified test conditions; it should not be interpreted as permission to install the whole system in a flood-prone position. Understand what backup does and does not promise For home battery storage, backup requires an agreed circuit arrangement and sufficient output. EcoFlow describes integrated backup and conditional 0 ms load-side switching under specified operating conditions. Those conditions and the applicable backup output limits should remain alongside the claim when comparing backup performance. Transfer speed does not establish how long appliances will run. Duration depends on available energy and demand. Nor does a rapid transfer prove that every appliance can start together. Ask the installer to demonstrate the actual protected circuits rather than relying on a general whole-home description. Compare trade-offs with explicit assumptions Use a small decision table to separate different benefits. Financial savings, outage support and future flexibility answer different questions. Combining them into one percentage hides the compromises, particularly when the same stored energy is reserved for backup and also counted as daily bill reduction. Reserve versus everyday use A larger reserve can improve outage readiness while leaving less energy for normal evening demand. Choose the reserve deliberately. Ask the supplier to model the setting you intend to use, rather than assuming the entire usable capacity is discharged for savings every day. Choice Potential benefit Trade-off Larger reserve Outage readiness Less daily use More capacity Longer supply Higher cost More automation Better scheduling Setup and monitoring Capacity versus utilisation Solar battery storage should be sized around recurring demand and charging opportunity. A larger battery may support a future appliance, but unused capacity still costs money. Compare today’s design with a clearly defined future scenario instead of assuming every possible household change will occur. Modularity can make expansion possible, subject to the supported configuration. Obtain the applicable limits for the UK equipment. Expansion should be a documented option with compatibility conditions, not a vague assurance that any additional battery can be fitted whenever convenient. Match efficiency assumptions to the charging route With AC-coupled solar, panel DC becomes AC before conversion back to DC for battery charging, then AC again for household use. DC-coupled solar can avoid that intermediate AC stage, although DC conversion and battery losses remain. Count the actual energy path rather than assuming lossless solar charging. Price assumptions matter As an illustration, buying at 10p/kWh and delivering energy with 90% round-trip efficiency gives an input cost of about 11.1p per delivered kWh. Avoiding a 30p import would leave roughly 18.9p before other costs. These are assumed rates, not a tariff offer. Grid charging requires AC-to-DC conversion and subsequent DC-to-AC supply to household appliances, including in a hybrid system with DC-coupled solar. Coupling architecture alone therefore cannot establish grid-charging efficiency. Losses depend on equipment, load, temperature and standby consumption, rather than a universal figure above 10%. For home battery storage, use an efficiency figure whose measurement boundary matches the calculation:
McLaren Living Secures Green Light for £65m Hackney Co-Living Development
McLaren Living has secured planning permission for a £65 million co-living and affordable housing development at Fish Island in Hackney Wick, paving the way for 324 new homes in east London. The Wansbeck Road scheme will deliver 280 co-living studios alongside 44 affordable homes across two buildings rising to 10 and seven storeys. Occupying the final development plot within the wider Neptune Wharf masterplan, the project will complete a key part of the regeneration of Fish Island and establish a new residential gateway at the junction of Wansbeck Road and Monier Road. Designed by HTA Design, the development has been conceived as a residential-led community combining private accommodation with an extensive range of shared amenities. Residents of the co-living building will have access to a gym, library, cinema and creative studios, together with communal kitchens and dedicated dining and social spaces. At ground-floor level, plans also include a social co-working café and flexible pop-up event space, helping to create greater activity and interaction between the development and surrounding neighbourhood. A landscaped central courtyard will sit between the two buildings, providing shared outdoor space while creating new connections through the site. Sustainability has also been embedded within the design. The car-free development will provide extensive cycle facilities alongside rain gardens and sustainable drainage measures, while rooftop solar panels will contribute towards reducing operational energy requirements. The scheme is targeting a BREEAM Excellent rating, further strengthening its environmental credentials as McLaren Living looks to deliver a high-density residential development designed around sustainable urban living. The combination of co-living and affordable housing also reflects the increasing diversification of London’s residential market, with purpose-designed shared living emerging alongside more established housing models as developers respond to demand for well-connected homes with greater communal and amenity provision. Ed Court, divisional managing director at McLaren Living, said the developer was excited to progress its plans for Wansbeck Road and complete an important remaining part of the Neptune Wharf masterplan. He added that the location represented a significant co-living investment opportunity, supported by a diverse professional population and strong connections to employment, education and leisure destinations across the capital. With planning permission now secured, the £65 million development represents another significant addition to Hackney Wick’s evolving residential landscape and the continuing regeneration of Fish Island. Building, Design & Construction Magazine | The Choice of Industry Professionals
Falling pupil numbers prompt call for wider approach to school place planning
Developers expected to fund new school places across all nine English regions despite pupil numbers falling by 722,000 by 2030 Councils in England should assess demand for school places across local school networks rather than considering each housing development in isolation, according to new analysis by national planning and development consultancy Lichfields. Department for Education forecasts show that nursery and primary pupil numbers are expected to fall by 473,000 by 2030, alongside a reduction of 249,000 secondary pupils. The analysis found that places funded through Housing Developer Contributions are forecast to increase across all nine English regions over the same period. In the North East, for example, pupil numbers are projected to fall by 2.9% while developer-funded places rise by 300%. It recommends that councils consider existing capacity, access to schools and longer-term population changes before deciding whether new provision is required. This should take account of children who move locally but remain at their current school, as they would not create demand for an additional place. Mainstream schools could also introduce SEND units where appropriate, while developer contributions could fund improved walking and cycling routes, crossings or bus services. New schools would still be needed where local provision could not accommodate the number of pupils expected. The findings come as councils plan for further housing growth under the government’s target to deliver 1.5m homes by 2029. Large developments are often planned on the edges of towns and villages, where nearby schools might have spare capacity but are too far away or cannot be reached safely on foot. Councils estimate the number of school-age children a development is expected to generate. Where existing schools cannot accommodate them or are not accessible, developers can be required to contribute towards new provision. Assessing demand across the wider area would help councils provide schools for new communities while making better use of places already available. Housing growth could also support established schools in areas where pupil numbers are falling. Robert Curtis-Haigh, Planner at Lichfields and co-author of the analysis, said: “Our analysis highlights a growing contradiction when planning for housing and education. “The current system places significant emphasis on the pupil yield of individual developments, meaning new school places are often still being planned even as pupil numbers decline and existing schools face falling rolls. “The solution isn’t to stop building new schools or new homes, but to take a more strategic view of how the education system will function over the coming decades. “New schools will still be essential in some locations, particularly where major growth is planned. However, in many cases there may be opportunities to improve accessibility and make better use of existing school capacity, while also recognising that housing growth actually supports those schools that are facing declining pupil numbers.” Read the full analysis here: https://lichfields.uk/blog/2026/august/24/catchment-22-the-education-planning-paradox-nobody-is-talking-about Building, Design & Construction Magazine | The Choice of Industry Professionals
Building Performance Specialist Appoints Managing Director
Building performance and M&E engineering specialist Mesh has appointed Jen Wallace as Managing Director to lead the business in the next phase of its growth. Jen joined Mesh in 2019 as one of the company’s first employees, progressing from a junior renewable energy consultant to Team Lead, before being appointed Operations Director in 2022. Over the past seven years, she has played a pivotal role in developing the systems, processes and culture that underpin all of Mesh’s services in the construction sector. Her appointment comes as Mesh continues to broaden its work across the built environment, combining building physics analysis with building services design to help clients and developers to improve the energy efficiency of new housing, public and commercial buildings. In her new role as Managing Director, Jen now takes responsibility for leading operations, people and culture, sales and marketing, and the day-to-day running of the business. Commenting on this appointment, Jen said: “This is an incredibly exciting time to be working in building engineering and the opportunities for Mesh across the built environment are considerable. Developers need to respond to increasingly demanding legislative requirements around energy performance, carbon emissions and overheating caused by a changing climate. Building owners are facing similar challenges which require improving and decarbonising existing facilities to drive down energy costs, transition away from fossil fuels, and maintain occupier comfort. Digital technology and automation continue to advance apace. We are developing and applying multiple tools to automate the more repeatable data processes to enable our engineers to focus their expertise where it adds the most value to our customers. Mesh has evolved enormously since I joined the business. However, what has remained consistent is our focus on understanding what clients are trying to achieve and using data-led evidence to help them make better decisions. Our approach is to bring together building physics and M&E engineering rather than looking at individual issues in isolation. This means we can quantify the impact of different energy strategies and assess the implications on running costs and carbon emissions to achieve the right balance of what is practical and deliverable for every project. I am extremely proud of the people and culture we have built at Mesh. There is a genuinely shared commitment to improving the sustainability of buildings and the wider environment that we live and work in. I am looking forward to leading the next stage of the business.” Doug Johnson, Founding Director of Mesh: “The opportunities ahead are significant. Whether we are working with architects to create better-performing buildings, pushing the boundaries of sustainable design and engineering, or helping organisations develop practical strategies to decarbonise existing facilities, property managers, architects and developers increasingly need joined-up engineering advice backed by robust analysis to inform decision making. Jen has had a very positive impact on Mesh’s growth. She joined us at a very early stage having worked in the charitable and local authority sectors. She has helped to build much of the operational infrastructure that has enabled Mesh to develop its customer base and services – and maintain a high level of repeat business. Jen understands the commercial and operational realities and challenges our clients face. Her progression from energy consultant to Managing Director reflects her talent as a business leader in the built environment. I am delighted that she has accepted this role to lead Mesh through its next phase.” Mesh’s services have continued to broaden as Building Regulations have become more stringent and renewable energy technologies have advanced. Its work now ranges from energy strategies and overheating analysis, operational and embodied carbon assessments, compliance and planning support, through to M&E design, tender specifications and strategies for decarbonising existing buildings. Mesh also has a number of niche specialisms – working with architects and planning consultants on National Planning Policy Framework HO11 projects that demand innovation and excellence in sustainability and design; developing energy strategies for complex estates and building portfolios needing to reduce energy consumption and accelerate decarbonisation, and embodied carbon analysis such as for M5 planning policy for replacement buildings. A key priority under Jen’s leadership will be the continued development of digital systems and automation for repetitive tasks and data collection to allow Mesh’s engineers to maximise their time on strategic analysis, problem solving, and developing practical, evidence-based solutions for clients. For more information, see www.mesh-energy.com or email info@mesh-energy.com. Building, Design & Construction Magazine | The Choice of Industry Professionals
£249m Refinancing Backs Next Chapter for Manchester’s Landmark Square Gardens
Downing has secured a £249.2 million refinancing package for two major residential towers at its £400 million Square Gardens development in Manchester, marking another significant milestone for one of the city’s largest new living schemes. The financing, provided by Bank of Ireland, covers Acer and The Fernley, the two completed co-living buildings within the wider Square Gardens development in Manchester’s First Street district. Together, the buildings provide a major concentration of new rental accommodation, with the 25-storey Acer and 45-storey Fernley forming the first two phases of the development. Both buildings are now operational, demonstrating the scale of demand for professionally managed, amenity-led rental accommodation in Manchester. Designed by Manchester-based SimpsonHaugh Architects, Square Gardens represents a substantial addition to the city’s evolving residential landscape. The wider £400 million development has been conceived as a new urban neighbourhood combining high-density living with extensive shared amenities, landscaped spaces and public realm. Residents have access to facilities including a gym and wellness centre, co-working and meeting areas, social lounges, private dining spaces and extensive landscaped gardens and terraces. Sustainability has also formed an important part of the development, with measures including air source heat pumps, while the scheme has targeted BREEAM Excellent and EPC A ratings. The refinancing represents an important financial milestone following the completion and occupation of the two buildings. Savills Capital Advisors advised Downing on the transaction. Bay Downing, joint chief executive of Downing, described the deal as a landmark transaction for the business, highlighting the strength of the company’s portfolio and growing opportunities across the living sector. The deal is also significant for the wider UK residential market. Large-scale co-living and Build to Rent developments are becoming an increasingly established component of regeneration in major regional cities, combining new housing supply with extensive shared facilities and professionally managed environments. Square Gardens has been created using Downing’s vertically integrated approach, with development, construction and ongoing management delivered by the business. This has enabled the company to take the scheme from construction through to operation within the wider group. With Acer and The Fernley now completed and backed by £249.2 million of refinancing, Square Gardens is moving firmly from major construction project to established residential destination, reinforcing Manchester’s position as one of the UK’s leading markets for large-scale rental and co-living development. Building, Design & Construction Magazine | The Choice of Industry Professionals
Local government reorganisation review: Ensuring continuity in the face of uncertainty
Karen Carter, public sector director at public procurement specialist Pagabo, has shared her thoughts following the government’s announcement on its intention to review plans for local government reorganisation (LGR) and ensure alignment with its wider plan to rewire the state. Karen said: “This week’s announcement adds another layer of uncertainty for councils that have already spent months planning for reorganisation. Four areas have had their plans withdrawn, another 14 are paused pending review, and the 2027 elections will now be fought on existing boundaries. “For the teams involved, that’s a lot more work suddenly required without a clear landing point. But the fundamentals haven’t changed. Schools still need building, homes still need delivering, and estates still need maintaining. None of that waits for a structural decision in Whitehall. The risk in moments like this is that authorities press pause on everything, not just reorganisation, and lose a year of delivery to a decision that isn’t theirs to make. It’s vital that local authorities remember that successful transition will depend not only on the governance design, but on collective leadership and the ability to maintain shared action while navigating the road ahead. “Our advice remains the same as prior to this latest government announcement. That is to keep statutory service delivery moving and focus on decisions that will be unaffected by reorganisation. This means procuring through compliant, flexible routes that transfer cleanly to whatever structure eventually emerges. Similarly, ensure contract, asset and supplier data is in order because that is the groundwork every future authority will need regardless of how new boundaries are formed. Finally, keep the relationships with your supply chain warm so that you can move quickly when clarity comes. “Uncertainty is not the same as standstill. The authorities that come through this best will be the ones that use the pause to get their house in order – rather than waiting to be told what shape they’ll be.” For more information and guidance, check out Navigating Local Government Reorganisation – which was recently published by Pagabo. Building, Design & Construction Magazine | The Choice of Industry Professionals