Registration opens for Wiltshire’s Switch Together scheme

Wiltshire opens fourth round of solar panel group buying scheme

Registration has opened for Switch Together in Wiltshire, a group-buying programme that helps residents access solar panels and battery storage through competitive pricing. The scheme uses collective purchasing power to reduce costs and simplify the process of installing renewable energy systems at home.

Wiltshire Council runs the programme with iChoosr, a specialist provider that organises reverse auctions among pre-vetted installers. Registration is free and carries no obligation to proceed. Homeowners provide basic details about their roof and receive a personalised quote based on competitive bids from approved installers.

This marks the fourth time Wiltshire and neighbouring Swindon have offered the scheme locally. More than 600 Swindon households have already installed solar systems through previous rounds, with most choosing to include battery storage alongside their panels.

How the reverse auction model works

The scheme operates through a structured process designed to reduce both cost and complexity. Residents register online and provide information about their roof, including size, condition, and orientation. This data helps installers prepare accurate bids without needing to visit every property initially.

Pre-vetted installers then compete in a reverse auction to offer the most competitive price for the collective group of registrations. Consequently, participants benefit from bulk-buying power that individual households could not achieve alone. Each household receives a personal recommendation based on their specific roof characteristics and energy needs.

After receiving their quote, residents can choose whether to accept the offer. There is no pressure to proceed, and registration does not commit anyone to a purchase. If a household decides to go ahead, a surveyor visits the property to confirm details before installation begins.

The process aims to remove common obstacles that prevent households from installing solar panels. These include uncertainty about installer quality, difficulty comparing quotes, and concerns about being overcharged. By handling the vetting and competitive bidding centrally, the scheme addresses these issues systematically.

Battery storage increases system value for households

Participants can add battery storage to their solar panel installation through the same bidding process. Batteries store surplus electricity generated during the day for use in the evening or overnight. This increases the proportion of solar energy a household can use directly, rather than exporting it to the grid at lower rates.

For many homes, batteries significantly improve the financial case for solar panels. Without storage, excess generation during sunny days goes to the grid while households still buy electricity at standard rates in the evening. Battery systems help balance this mismatch between generation and consumption patterns.

The Swindon participation data suggests batteries have become a standard component rather than an optional extra. Most of the 600 households that installed systems through previous rounds included storage. This reflects both falling battery costs and growing awareness of their practical benefits.

Medway Council, which runs a similar Switch Together scheme in Kent, confirms that the programme is open to homeowners, landlords, and small businesses. The Medway version also supports electric vehicle charging point installations alongside solar and storage systems. However, Wiltshire’s current round focuses specifically on solar panels and batteries.

Fourth local round shows sustained demand for residential solar

The fact that Wiltshire and Swindon are launching their fourth round indicates consistent demand for the scheme. Repeat programmes suggest that earlier participants have been satisfied enough to recommend the scheme to neighbours, or that there remains a substantial pool of households still interested in solar installation.

Swindon Borough Council has published data showing that over 600 local households have installed solar systems through previous rounds. This represents a meaningful proportion of residential solar capacity in the area and demonstrates that group-buying models can achieve scale over time.

The repeat nature of the scheme also allows councils to refine their approach based on earlier experience. Installers become familiar with the process, reducing administrative friction. Households benefit from seeing completed installations in their area, which can reduce hesitation about new technology.

Group-buying schemes for solar have spread across multiple UK councils in recent years. The model originated in the Netherlands and has been adapted for the UK market by iChoosr and similar providers. Wiltshire’s continued participation reflects broader council interest in supporting residential renewable energy without direct subsidy.

Carbon reduction and energy cost savings drive council support

Wiltshire Council highlights the carbon emissions reduction potential of the scheme over the typical 25-year lifespan of solar panel systems. This long-term emissions benefit aligns with local and national net-zero targets. However, the scheme does not involve direct public funding of installations.

Instead, councils facilitate access to competitive pricing and quality assurance. This approach allows local authorities to support decarbonisation without the budget implications of grant programmes. The scheme structure means participating households pay for their installations but at group-negotiated rates.

For residents, the primary motivation is typically cost reduction rather than carbon savings. Solar panels generate electricity that displaces grid purchases, reducing bills. Battery storage extends this benefit by allowing households to use their solar generation during evening peak-price periods.

The financial case for solar has improved substantially as panel costs have fallen and electricity prices have risen. Payback periods have shortened, particularly for households with high daytime electricity use or those adding battery storage. The group-buying model aims to ensure households get the full benefit of these improved economics.

Registration details and scheme timeline for Wiltshire residents

• The scheme is called Switch Together, previously known as Solar Together in some areas
• Registration is free and does not commit households to any purchase
• Residents need to provide basic roof information including size, condition, and orientation
• Pre-vetted installers compete through a reverse auction to offer competitive prices
• Participants receive personalised quotes based on their specific property and needs
• Battery storage can be included as part of the installation package
• Over 600 Swindon households have already installed systems through earlier rounds
• This is the fourth time Wiltshire and Swindon have run the scheme together

What businesses and households should consider before registering

Registration makes sense for most property owners curious about solar costs, since there is no obligation to proceed. However, the scheme works best for households with suitable roof space, reasonable condition, and an orientation that captures sunlight effectively. South-facing roofs with minimal shading typically generate the most electricity.

Landlords should consider whether they can pass through the electricity cost savings to tenants or whether the investment makes financial sense given their rental structure. Small businesses may find the scheme particularly attractive if they have high daytime electricity consumption that aligns with solar generation patterns.

Properties with older roofs may need repairs before installation can proceed. The survey stage will identify any issues, but households should be aware that additional work could affect the overall project cost. Similarly, older electrical systems might require upgrades to safely accommodate solar panels and battery storage.

Financial products like solar loans have become more common and may be available through participating installers. These can spread the upfront cost over several years, matching payments more closely to the electricity savings generated. Nevertheless, households should compare loan terms carefully and consider whether paying upfront might be more economical.

The scheme provides a structured way to get a competitive quote without managing a complex tendering process independently. For many households, this convenience and quality assurance represents significant value even beyond the price benefit. Registration allows residents to find out what their property could achieve and at what cost, without any pressure to commit.

Where to find registration details and further information

Wiltshire residents can register through the official Switch Together landing page for their area. The UK government website also provides general guidance on solar panel installation, planning permission requirements, and the Smart Export Guarantee scheme that allows households to sell surplus electricity back to the grid.

The Office of Gas and Electricity Markets regulates energy markets and provides consumer information about renewable energy systems and export tariffs. Ofgem’s guidance can help households understand how solar panels interact with their existing energy supply and what options exist for exporting surplus generation.

For businesses considering solar installation, our net-zero hub provides resources on renewable energy and carbon reduction in the context of broader environmental compliance requirements. Small businesses registered for the scheme should consider how solar installation fits into their wider energy strategy and whether additional measures could complement their investment.

Residents interested in the technical standards for solar installations can consult guidance from the Microgeneration Certification Scheme, which certifies installers and equipment. Understanding these standards helps participants assess whether the installers included in the scheme meet recognised quality benchmarks.