Cheapest way to get started with solar?

Removable's the way to go here. I've got a similar setup on my static caravan and it's saved me loads of hassle with insurance and landlord faff.

Skip the all-in-one "budget" kits though—they're penny-wise, pound-foolish. Better to grab a decent 400W rigid panel (Renogy or Fogstar), proper MPPT controller (Victron BlueSolar, not the cheap PWM stuff), and a quality lithium bank rather than dodgy lead-acid.

You'll spend maybe £1200-1500 upfront but it'll actually work reliably. Plus it's portable—when you move on, everything comes with you. The all-singing-dancing kits half that price tend to underperform and you'll end up upgrading anyway.

Honestly, starting with 400-600W and a 5kWh battery is the sweet spot. Gives you proper usage without breaking the bank, and you can expand later without ditching what you've already bought.

The removable route is definitely your friend here, mate. I've got a similar arrangement with my motorhome setup and it's brilliant for flexibility—just make sure your mounting brackets are genuinely solid. Cheap brackets are a false economy that'll have you swearing at the sky when they're rattling loose after three months.

Where you can save real money without cutting corners: grab a decent 100W rigid panel (not the flimsy foldables for this application) and pair it with a basic MPPT controller—something like the Victron SmartSolar 100/20 or even a Renogy equivalent if you're watching the pennies. They'll do the job without nickel-and-diming you later.

The battery side is where people slip up. A single LiFePO4 box (Fogstar or similar) will hurt less upfront than bodging multiple lead-acid units, and you'll actually get usable capacity. Start with what you genuinely need—likely 5-10kWh depending on your loads—rather than planning for some fantasy off-grid future.

Since you're renting, keep the whole thing mod

The removable angle makes sense for your situation, but I'd flag a practical consideration the others haven't mentioned: micro-inverters or a hybrid setup might actually work out cheaper long-term than going full string inverter, especially if you're planning to relocate in a few years.

I've got a 4kW removable system on my boat and learned this the hard way. A decent Victron MPPT controller with a small battery bank (even 5kWh LiFePO4) gives you flexibility without the complexity of a full hybrid. You're looking at perhaps £2-3k for something genuinely useful rather than the £500 "bargain" systems that'll frustrate you within months.

The real false economy is cheap panels. Second-hand Renogy or similar from eBay auctions can work, but new budget panels often have dodgy performance curves. Better to grab 2-3 quality panels than 6 mediocre ones.

Also—confirm your landlord's insurance actually covers tenant-installed renewables. Some policies have clauses that'll void coverage or require removal. Worth the conversation before you wire anything up.

Yeah, removable's solid for rental situations. Worth looking at the budget end of things though—those cheap 100W rigid panels from Amazon are tempting but honestly penny-pinching in the wrong place. You'll want decent charge controller and battery to avoid replacing dodgy kit every year.

If you're serious about it, grab a proper setup: 200-400W rigid panels (Renogy or similar), MPPT controller, and a decent LiFePO4 battery like a Fogstar or even DIY LiFePO4 cells if you're handy. Might look pricey upfront but cost-per-watt over 5 years is way better than the budget route.

Removable mounting's the key—means you can take it with you when you leave. Use adjustable brackets rather than bolting anything permanent. Landlords usually fine with that.

Budget-wise, you're looking £1.5-2k for a proper entry system. Less if you DIY the battery side but that's not for everyone.

What's your actual usage target? That'll help you not overspec or underspec.

Mate, I've been down this road on the boat and it's genuinely where starting cheap makes sense. The removable panels are the way forward for your situation—no landlord drama, and you can take them with you when you move.

What nobody's mentioned yet though: have you looked at the balance-of-system costs? The panels themselves might be budget, but a decent MPPT controller (even a basic Victron or Renogy) plus proper cabling, breakers, and a battery if you want storage will add up quick. That's where people get caught out.

For a rental setup, I'd suggest starting with just panels + controller into existing electrics rather than going full off-grid battery system straight away. Keeps costs down and you learn what you actually need before dropping proper money.

What's your typical daily usage looking like? That'll dictate whether 100W is enough or if you're looking at 400W+.

The removable route's definitely the way if you're renting—learned that the hard way on the narrowboat before we sorted permanent moorings. One thing worth considering though: don't cheap out on the charge controller. Seen too many setups with dodgy £40 units from Amazon that either brick themselves or massively underperform.

If you're starting small, a basic Victron MPPT 100/30 is roughly £150 and genuinely future-proof. Pairs nicely with a couple of 100W panels and a modest battery bank. That gives you flexibility to expand without replacing kit.

Budget-wise, you're looking at maybe £600-800 for a proper starter setup (panels, controller, battery, wiring, breakers). Sounds steep but it's the sweet spot where you're not throwing money away on replacements six months in. Seen loads of people try to save £100 here and lose £500 there.

Also worth checking whether your landlord would stump up half if you frame it as a house improvement—some are surprisingly keen if you sort it professionally.

The removable angle's definitely your best bet in a rental, but don't sleep on the controller and battery side—that's where penny-pinching bites you hardest.

I've watched too many people grab a dodgy MPPT off eBay and spend months chasing phantom faults. Victron's entry-level stuff isn't cheap, but a basic SmartSolar 75/15 will actually last. You can upgrade panels later without regret.

For batteries, LiFePO4's the sweet spot now rather than lead-acid if you're serious about this. I started with an old leisure battery years back on the motorhome—total false economy. A Fogstar or similar Chinese LiFePO4 (properly spec'd) will outlive the rental debate entirely.

Real talk: you can bodge the panels on a budget and move them along, but get the charge controller and battery right first. That's the bit you'll actually feel the difference on, especially come winter when you're genuinely relying on it.

What's your actual power draw looking like? That'll shape whether you're talking 200Wh or something more

Spot on about the removable panels, lads—but here's the thing: cheap solar gear is brilliant until it isn't, usually during a cloudy week in November when you've got 12V and regrets.

Start with a decent MPPT controller (Victron BlueSolar is the sweet spot for budget) and a proper lithium battery rather than lead-acid. Yeah, it's more upfront, but you'll actually use the system instead of watching it underperform and gathering dust.

For renting, grab a 100W rigid panel setup (Renogy or similar), chuck it on a portable mounting bracket, job done. Total damage: £400-500 if you're patient on eBay/Facebook Marketplace. Add a 200Ah LiFePO4 down the line when funds allow.

The false economy is buying cheap PWM controllers and dodgy batteries—you'll bin them in 18 months and spend twice as much replacing them. My static caravan would be a brick without learning that lesson the hard way.

Bit of a different angle here, but I'd say the battery and charge controller are where you actually save money long-term. I started with three cheap 100W panels on the narrowboat and a dodgy PWM controller—spent the next two years watching my battery sulk and efficiency disappear. When I finally upgraded to a decent MPPT (Victron in the end, wasn't cheap but), the same panels suddenly behaved properly.

For removable on a rental, you're spot on—I've got mine on a tilt frame with MC4 connectors so the whole rig comes down if I ever move. Costs more upfront but you're not leaving hardware behind or arguing with landlords.

Real talk though: start with one good quality panel, decent battery (even a small LiFePO4 makes sense now prices have dropped), and a proper controller. You'll add panels later when funds allow. Honestly cheaper than replacing a dodgy 200W setup six months in when it stops charging properly.

What's your south-facing space actually like? Roof access, shading, how many hours direct sun?

Depends what you're actually trying to power, tbh. I've got a 400W setup on my static caravan and the temptation was to go dirt cheap on everything, but I learned the hard way that a dodgy MPPT controller will lose you 15-20% efficiency right from the start.

If you're after absolute minimum spend, look at what @SophieFisher and @LiFePO4Nerd are saying—batteries and controllers matter more than panel wattage. You can always add more panels later, but replacing a knackered controller is a pain.

One thing though: if your landlord's genuinely on board, get it in writing what happens when you move. Removable is sensible, but mounting properly (rather than bodging it) costs barely more and you'll actually use it instead of fiddling with angle adjustments every week.

For UK rental setups specifically, a basic 100-200W panel with a Victron SmartSolar 75/15 and decent lithium (not lead) will run you maybe £800-1000 all in and actually work. Budget gear often

You're in a decent spot with landlord approval, mate. Few questions though—what's your actual power consumption like? That'll dictate whether you need battery storage or can just run stuff during daylight.

If you're renting and want removable, @24VPro's point stands but consider this: a single decent 400W Fogstar panel (~£400) paired with a basic MPPT like the Victron SmartSolar 100/30 (~£300) gets you started properly. Dodgy cheap controllers often throttle output and you end up chasing your tail.

Where most folk go wrong on a budget is skimping on the controller. That's where efficiency dies. Battery storage's your real cost sink though—if you can get away without it initially and just use solar for daytime loads, that changes the maths completely.

What are you actually wanting to power? Lights and devices, or heating/cooling? That determines whether you're looking at a few quid or serious investment.

Start with a decent MPPT controller and a single panel rather than cheap PWM garbage—you'll thank yourself when you're actually charging instead of watching it piss about in the rain.

Since you've got landlord approval, rent a roof without the commitment; grab a 400W mono panel (Renogy or similar budget option), a Victron SmartSolar MPPT 100/30, and wire it to existing leisure batteries if you've got them—or pick up refurb LiFePO4 units. The controller does the heavy lifting and actually maximises what you're pulling in.

Skip the fancy monitoring at first. You don't need WiFi alerts to know when your batteries are full, just a basic shunt and multimeter. Total: maybe £800-1000 for a functional system that'll run your basics, versus £3k for integrated everything that you'll only use half the features on.

What's actually drawing power in your setup?

Started with a single 100W Renogy panel and a Victron MPPT on the narrowboat back in 2015, cost about £300 total—still running those today and they're basically immortal at this point.

The real saving isn't the kit, it's knowing what you actually need. Most people buy double what they use then spend three years feeling smug about their battery percentage. Work backwards from your actual consumption (kettle, laptop, fridge?) rather than forwards from "budget available."

@MarineGeoff's spot on about ditching PWM controllers—false economy that'll annoy you forever. One decent MPPT will work harder and longer than two cheap ones having a nervous breakdown.

Since you've got roof access as a renter, you're golden—panels are the expensive bit and you can't take them with you anyway, so don't get fancy. Get boring, grey, reliable components that'll outlast your tenancy. Add panels later when you've realised what you actually need instead of guessing.

Cheers for sharing that, @ExFarmer—that's genuinely useful. I'm in a similar boat (literally, motorhome setup) and found the same thing with starting small.

@CotswoldNomad—couple of things I'd add: if you're renting, have you considered a portable setup instead? I use a 200W foldable panel with a Victron SmartSolar MPPT controller, and the beauty is you can take it with you when you move. Cost me about £400-500 but it's future-proof.

Also, what's your battery situation? I see folks jumping straight to panels without thinking about storage, which defeats the object. Even a basic 100Ah LiFePO4 (Fogstar or similar) makes a massive difference in actually using the power you generate, rather than wasting midday peaks.

The "cheap PWM garbage" comment from @MarineGeoff is spot on—MPPT really does make a difference, especially on cloudy UK days where you're squeezing every amp.

What's your actual usage profile? That'll determine whether you actually need

Real talk—if you're renting, skip the massive system. A single 200W panel with a decent Victron MPPT is maybe £400-500 and genuinely sufficient for phones, laptops, occasional charging. I've got that setup on my cabin and it covers daily bits.

The trick is not going cheap on the controller. PWM stuff is false economy like @MarineGeoff said—you lose proper voltage regulation and it'll annoy you. Victron's SmartSolar range is worth the extra tenner.

Battery-wise, don't rush into LiFePO4 if you're starting out. A basic AGM leisure battery (100Ah ~£200) teaches you real quick what your actual needs are before dropping grand on lithium.

Since your landlord's cool with it, make sure whatever you mount can come off cleanly. Roof penetrations are dodgy for deposits. Consider a ground mount or wall bracket instead if possible—more faff but keeps the peace.

What's your actual use case? If it's just topping up during the day versus running a fridge 24/7 makes a massive difference to