The Renters' Rights Act 2025 and Plug-in Solar: What It Means for You

The Renters' Rights Act 2025, which came into force in April 2025, shifted the balance of power between tenants and landlords in a way that hasn't happened for decades. It didn't happen all at once. The reforms come in waves through 2026 and beyond. But one section came into force immediately, and it matters for plug-in solar.

That section says: tenants have a legal right to request improvements to their rented home, and landlords cannot unreasonably refuse.

This is not small. For the first time, you have statutory ground to push back if your landlord blocks a reasonable request. And plug-in solar—portable, non-damaging, affordable—is textbook example of a request a landlord cannot reasonably refuse.

What the Act Actually Says

The relevant clause of the Renters' Rights Act 2025 states:

"A landlord shall not unreasonably withhold consent to a tenant's request to carry out an improvement to the property."

That's the core of it. Simple, direct, powerful.

The Act defines "improvement" broadly: anything that adds value, utility, or wellbeing to the property. It includes energy-saving measures, renewable energy installations, safety upgrades, accessibility improvements, and more.

It does not define "unreasonably." That's intentional. The test is common law reasonableness—the same standard that applies to other landlord-tenant disputes. And it's been built up over decades through case law.

In practice, "unreasonable refusal" means the landlord's reasons must be genuine, material, and based on legitimate interests (property protection, safety, financial risk). Refusal based on preference, aesthetic dislike, or vague "I don't like it" reasoning is unreasonable.

The Reasonableness Test: What Counts

When a landlord refuses permission for an improvement, they need solid ground. Here's what the law considers reasonable:

Reasonable grounds for refusal:

• Structural risk to the building
• Safety concerns (electrical hazard, stability, materials that are genuinely dangerous)
• Breach of building regulations (e.g., an installation that violates wiring standards)
• Damage to the property that can't be remedied
• Material financial loss to the landlord (e.g., an improvement that actually reduces the property's value—rare in practice)
• Violation of a higher legal requirement (e.g., listed building restrictions, conservation area rules)

Not reasonable grounds for refusal:

• Aesthetic preference ("I don't like the look of solar panels")
• General nervousness ("I'm not sure about solar technology")
• Casual inconvenience ("It might be a bit of bother")
• Protecting the landlord's future investment ("You might want to sell the panels when you leave")
• Minor cosmetic impact that doesn't materially affect the property

Plug-in balcony solar falls clearly into the "not reasonable" zone. It causes no structural change. It's fully removable. It's covered by building regulations compliance (once the BSI standard publishes in July 2026). It doesn't damage property. It doesn't reduce value.

If a landlord refused permission for a small freestanding balcony solar mount, that refusal would be unreasonable. And you'd have legal ground to challenge it.

How the Act Empowers Tenants

Before the Renters' Rights Act, if a landlord refused permission for an improvement, you had limited options:

• Accept the refusal and move on
• Go to court at great expense and with uncertain outcome
• Break the lease and leave

Courts existed as a theoretical remedy, but they were prohibitively expensive. Most tenants simply accepted "no."

The Act changed that. Now, there's a structured process:

Step 1: Request permission. Write to your landlord (or managing agent) with a specific, detailed request. Include information about the improvement, its scope, cost, and any relevant product specifications.

Step 2: Landlord responds (or should). The landlord should respond within a reasonable timeframe (typically 28 days is the standard in housing law, though the Act doesn't specify). They should either give consent or provide reasons for refusal.

Step 3: If they refuse, assess the reasonableness. Does their reason meet the legal test of reasonableness? If not, you can challenge it.

Step 4: Escalate if necessary. You can lodge a complaint with the First-Tier Tribunal (Housing and Property Chamber). The tribunal will examine the case and determine whether the refusal was reasonable.

The tribunal process is much cheaper and more accessible than court. You don't necessarily need a solicitor (though you can have one). The tribunal actively tries to resolve disputes fairly. And if the tribunal agrees the refusal was unreasonable, the landlord can be ordered to grant consent.

Plug-in Solar Under the Act: A Case Study

Let's walk through a real scenario.

You live in a rented flat in Manchester with a south-facing balcony. You want to install an 800W plug-in solar system using a clamp mount on the railing. No drilling. No permanent alteration. Fully removable.

You email your landlord: "I'd like to install a portable solar power system on my balcony. It's compliant with UK regulations, mounts to the existing railing with a clamp (no drilling), weighs 40kg total, and is fully removable when I move. The system will save me about £120 per year on electricity. I'd like your written consent."

Scenario A: Landlord says yes. Done.

Scenario B: Landlord says no with no reason. You respond: "The Renters' Rights Act 2025 requires you to provide reasons if you're refusing an improvement request. What's your concern?" Often, this prompts a rethink. The landlord realises they don't have a valid reason and agrees.

Scenario C: Landlord says no and gives a reason. "I don't want solar on my building. It doesn't fit the aesthetic." You respond: "Aesthetic preference isn't a reasonable ground for refusing an improvement under the Renters' Rights Act 2025. The system is on my private balcony, causes no permanent change, and is fully removable. Under the Act, I believe you're unreasonably withholding consent. I'd like you to reconsider. If you maintain your refusal, I'll escalate to the First-Tier Tribunal for a determination of reasonableness."

At this point, most landlords will cave. They don't want tribunal involvement. It's costly and likely to go against them.

Scenario D: Landlord maintains refusal. You lodge a complaint with the First-Tier Tribunal. The tribunal examines the case. The landlord's only ground is aesthetic preference. The tribunal agrees this is unreasonable. Consent is ordered.

In nearly every real scenario involving balcony solar, you win—either because the landlord agrees upfront or because the tribunal agrees the refusal was unreasonable.

Important Caveats and Developing Law

The Renters' Rights Act 2025 is new. Some aspects are still being clarified through case law and tribunal decisions. Here are things to know:

Landlord's costs: If the improvement requires work (an electrician, a surveyor), can the landlord require you to pay for landlord's costs (e.g., landlord's surveyor to approve it)? The Act is unclear. In practice, for a simple balcony mount, there's likely no cost to the landlord, so this shouldn't arise. But for more complex improvements, it might. If your landlord claims they need an electrician to approve the installation, negotiate whether they pay (they should) or whether you do (less likely to be reasonable).

Structural safety: The Act respects building safety. If a legitimate structural engineer says the balcony can't support the weight, the landlord can reasonably refuse. Make sure your mount is rated for the weight it will carry, and if the landlord expresses structural concerns, consider getting a structural engineer's opinion (you'd typically pay for this, or split the cost with the landlord).

Building insurance: Some landlords claim an improvement will affect insurance. For plug-in solar, this is almost always false—adding insurance for a small electrical device is usually negligible cost and often automatic. Push back gently: "Can you confirm with your insurer that a portable solar system would affect the policy? If so, I'm happy to cover any additional premium."

Leasehold and freeholder: If you own a leasehold (not renting), the Act doesn't apply—you're dealing with the freeholder's rights, not landlord-tenant law. But the underlying principle (can't unreasonably refuse) is still present in lease law. If you're a leaseholder, check your specific lease terms.

Listed buildings and conservation areas: Some properties have additional restrictions due to planning status. Plug-in balcony solar doesn't require planning permission, but if your building is listed or in a conservation area with specific restrictions, the Act respects those. Your landlord can reasonably refuse if a genuinely valid planning restriction exists. This is rare for balcony-mounted systems, but worth checking.

In Practice: The Typical Experience

Most renters won't need to know about tribunal law. They'll simply email their landlord, get a yes within a few days, and move on.

Some will face initial resistance ("I'm not sure about this"), provide more information, and get a yes within a week.

A small minority will face a landlord who digs in. For those renters, the Renters' Rights Act 2025 is transformative. You're no longer helpless. You have legal ground to push back. And you have a structured process to resolve the dispute.

The Act doesn't guarantee you'll win every dispute. But it ensures that reasonable requests—like balcony solar—can't simply be blocked by landlord veto. That's genuinely new.

Moving Forward

The Renters' Rights Act 2025 is part of a broader wave of tenant protections coming through 2026–2028. Eviction reforms, notice period changes, and ban on no-fault evictions are also on the horizon.

But for right now, in April 2026, the key thing to know is: you have the legal right to request improvements, and your landlord can't unreasonably say no.

Plug-in solar is one of the first improvements a generation of renters will install under this new law.

For more on the practical side of installing solar as a renter, see Plug-in Solar for Renters UK: Your Complete Guide.