Build Your Own Power Station: My 2000W DIY Solar Setup With a Full Parts List — vs. EcoFlow & Jackery

Last updated: May 2026 · Product prices and ASINs last verified on 2026-05-22. Related guide: Octopus Agile battery arbitrage setup.

I had one of those moments scrolling online. You know the one. I saw the price for a big-name 2 kWh power station and nearly spat out my tea. Over £1,700. For my shed! I just wanted to run my power tools, charge my e-bike, and keep a small fridge going at the allotment without running a massive extension lead from the house.

That price tag sent me down a rabbit hole. I started wondering, “What’s actually inside these magic boxes?” Turns out, it’s five basic components — and a proper solar panel is the part that really makes it pay back. When I priced them up individually, the total came to less than £900: a LiFePO4 leisure battery, an MPPT solar charge controller, a 400 W foldable solar panel, a 2000 W pure-sine inverter and a cable + ANL-fuse kit. So I took a punt, spent an afternoon with a crimper and a drill, and built my own DIY solar power system. Here’s exactly what I bought, how I wired it, the massive mistake I made along the way, and why I’m never going back.

To be clear: I’m not building a portable power station with a handle and a screen. I’m building a modular DIY solar system — a battery, an inverter, an MPPT charge controller, solar panels and safe wiring — permanently fitted in one spot. A power-station alternative for a shed, garage, allotment, off-grid cabin or a permanently-fitted motorhome build.

⚠️ Safety disclaimer: This article shares my personal experience with a DIY solar setup. Descriptions may be incomplete or inaccurate, and products change constantly. You build at your own risk. Working with 12V/24V LiFePO4 batteries, 2000W inverters and 230V AC wiring requires basic electrical knowledge. If you’re not confident with DC/AC wiring, fuse sizing, RCD installation or earthing, hire a qualified electrician — cable fires and electrical injuries are real. For any installation tied to the grid (e.g. hybrid inverter), the work must comply with G98/G99 and be signed off by an MCS-certified installer.

Quick decision: Power station or DIY solar?

You’re here because you’re torn between “I’ll build it myself” and “I’ll just buy a finished box.” This decision table answers it in 5 seconds:

Your situation	Better choice
Shed, garage or allotment (stationary)	DIY solar setup
Permanent motorhome / van build	DIY or hybrid all-in-one
Weekend camping, market stalls, festivals	Pre-built (EcoFlow / Jackery)
Home-office UPS for outages	Pre-built (UPS switchover)
Maximum kWh per pound	DIY solar setup
Maximum comfort + app + warranty	EcoFlow / Jackery
Off-grid cabin with future expansion	DIY solar setup
Crimping wires sounds terrifying	Pre-built

If your answers lean “stationary + max capacity,” keep reading — the rest of this article is your build guide. If you’re more “mobile + comfort,” scroll down to the pre-built recommendations section.

My DIY solar setup at a glance

My goal was simple: 2000 watts of proper 230V AC power, at least 2 kWh of solar-charged storage, and a 400 W foldable panel to top the battery up on a decent British day. I wanted it permanently fitted in my workshop, safe and solid. Here’s how my DIY solar build stacks up against the off-the-shelf power stations.

The pre-built power stations win on portability, UPS and polish. On usable kWh per pound, DIY pulls ahead as you scale: a budget DIY build (~£1,050) gives about 2.5× the storage of the equivalent-budget DELTA 3 Plus, and premium DIY at ~£1,500 offers nearly 3× the capacity of any same-price pre-built. Need more later? Add another battery — try doing that with a sealed box. At the bare 2 kWh tier, though, a discounted Jackery is comparable on price.

12V or 24V LiFePO4 battery for a UK DIY system?

Short answer: Below 2000 W continuous → 12 V (cheaper components, broadest UK hardware availability, simpler wiring). Above 2000 W or with long DC runs → 24 V (current halves, so you can use much thinner copper and smaller fuses — easily £50–100 less cable on a typical build). Both feed 230 V via the inverter; the trade-off sits entirely on the DC side.

This is the heart of the system, and the one place you absolutely shouldn’t skimp. For me, it had to be LiFePO4 (LFP), no ifs or buts.

• They last for years: 3,000–6,000 full charge cycles — more than 10 years of daily use.
• Much safer chemistry: Far more thermally stable than the NMC lithium in laptops and EVs — but no lithium battery is truly fireproof, so still fuse it, size cables correctly and buy a battery with a proper BMS. Crucial for a wooden shed.
• Better in the cold (with a caveat): They’ll happily discharge down to around -20°C, but most LiFePO4 can’t be charged below freezing without damage — pick a battery with low-temperature charge cut-off or self-heating for an unheated garage in January.

The bigger question: 12V or 24V?

Rule of thumb: Up to 1000W, 12V is fine. At 2000W or more, 24V wins. Why?

Load	12V current	24V current	Cable recommendation
1000W	~83 A	~42 A	16 mm² (12V) / 6 mm² (24V)
2000W	~167 A	~83 A	50 mm² (12V) / 16 mm² (24V)
3000W	~250 A	~125 A	70 mm² (12V) / 25 mm² (24V)

At 2000W, 24V halves the current from ~167A to ~83A. In practice: instead of £60–£80 for 50 mm² copper, 16 mm² runs you £15–£20 — and the fuse is cheaper. If you’re starting fresh today, I’d pick 24V almost every time. More on this: 12V or 24V in detail.

Concrete picks (all on Amazon.co.uk):

• Budget 200 Ah / 12V: Power Queen 12V 200Ah PLUS (200A BMS), ~£350. The 200A BMS means ~2,560W continuous, so it can actually feed a 2000W inverter (~167A draw) — keep cable runs short. (Cheaper generic 200Ah units sell around £230, but many ship with a 100A BMS that tops out near 1,280W — too little for a sustained 2000W load, so check the BMS rating before you buy.)
• Premium 280 Ah pack / 24V (the upgrade I’d build next): two 12V 280Ah LiFePO4 in series → ~25.6V × 280Ah ≈ 7.2 kWh nominal (~5.7 kWh usable), roughly £700–£1,000 for the pair. Only series-connect batteries the maker rates for 24V series, and use a 24V-rated inverter and MPPT — not the 12V parts linked below.
• Backup if sold out: Renogy 200Ah LiFePO4 deep-cycle or ECO-WORTHY 200Ah Smart with Bluetooth

In all cases: built-in BMS non-negotiable. LiTime / Renogy / Eco-Worthy / Bluetti are safe bets. No-name third-party Amazon batteries: skip them.

Which 2000W pure sine wave inverter for a UK DIY setup?

Short answer: Pure sine wave only — modified sine kills laptop chargers and smart-appliance controls. For 12 V/2000 W, the Renogy 2000 W pure-sine (~£220) is the value pick; for 24 V the Victron MultiPlus or the Renogy 24 V variant. Mandatory: a Class-T fuse at the battery (LiFePO4 has very high short-circuit current; Mega/ANL often won’t safely break it) and 50–70 mm² copper.

Trust me on this one: pure sine wave only. You’ll see cheaper “modified sine wave” inverters, and they might seem tempting. They’re fine for simple stuff like an old incandescent bulb, but they’ll slowly murder anything with sensitive electronics. Laptop chargers, modern power tool batteries, speakers, LED lights – they all hate it.

In the UK market I’d narrow your choice to two tiers:

• Value (~£210): Renogy 2000W Pure Sine Wave Inverter with UK 3-pin BS 1363 sockets and a built-in UPS function. Hard to beat for the price, and a known brand with UK-based returns.
• Premium (~£525): Victron Energy Smart 2000VA — the industry standard for caravan, marine and off-grid installs. Bluetooth + the VictronConnect app means you get live monitoring of input/output and warning notifications. Crucially, it handles startup spikes from power tools and compressors without flinching. If your shed sees serious workshop use, this is the one.
• Backup if sold out: EDECOA 2000W Pure Sine 12V→230V or Giandel 2000W with UK plug

⚠️ Wiring warning — expert tip: A 2000W inverter pulls over 160 amps at max load on a 12V system. Never use the thin cables that ship with budget inverters. For this power level you need 50 mm² copper cable minimum and a solid ANL or mega-fuse rated 200–300A mounted directly at the battery’s positive terminal. Skip this and your cables turn into heating elements — see my mistake further down.

A few things I looked for in my inverter:

• Automatic shutdown for overload, under-voltage, and overheating.
• A remote switch terminal. This is brilliant because you can mount a little on/off switch wherever you want, instead of having to reach the main unit.
• Decent idle efficiency (over 90%). It’s surprising how much power these things can use just sitting there doing nothing.

My biggest tip: wire the inverter directly to the battery with the thickest, shortest cables possible. Never, ever wire it through the solar charge controller’s load terminals. Keep the battery-to-inverter run under 1.5 metres using 50 mm² cable.

Which MPPT charge controller for a UK 400–600W array?

Short answer: MPPT is mandatory once panel power exceeds 200 W — 15–30% more yield over PWM, and the gap widens further in Britain’s dim winter sun. For 400–600 W of solar, a Victron SmartSolar MPPT 100/30 (~£130) or Renogy Rover 30A is the standard pick. Sizing rule: panel V_OC × 1.25 must stay under the controller’s max input (a 36 V V_OC module × 1.25 = 45 V → a 75 V controller is enough).

This little box is the go-between for your solar panels and your battery. You’ll see two types: PWM and MPPT. Don’t even hesitate. MPPT (Maximum Power Point Tracking) is what you want. It’s clever enough to squeeze 15-30% more power out of your panels on any given day, which makes a huge difference during our less-than-glorious British winters.

Sizing it is crucial. You need to look at your solar panel’s “Open Circuit Voltage” (V_OC).

Panel V_OC	MPPT model
up to 60V	Victron 100/30 or 100/50
up to 100V	Victron 150/50 or Eco-Worthy 100/60
up to 150V	Victron 250/60 (series-string of panels)

Here’s the golden rule I learned the hard way on a previous project: Your panel’s V_OC multiplied by 1.25 must be less than the controller’s maximum input voltage. On a bright, freezing cold morning, panel voltage can spike way above its rating, and if your controller isn’t sized to handle it, you’ll hear a sad little pop and smell magic smoke. Background: MPPT vs. PWM and correct sizing.

Concrete picks:

• Main pick: Victron SmartSolar MPPT 100/50 with Bluetooth, ~£137 — gold standard
• Backup if sold out: ECO-WORTHY 60A MPPT or Renogy Rover 60A — functionally similar at lower price

Component 4 — Solar panels (400W rigid or foldable)

You’ve got two main choices here, and it really depends on your setup.

• Rigid glass panels: These are the workhorses. Perfect for bolting to the roof of a shed, a frame at the allotment, or a south-facing wall. They’re the cheapest way to get watts, they’re tough as old boots, and they’ll last 25 years. A 400W panel is pretty big (about 1.7m × 1.1m) but offers the best value.
• Foldable / flexible panels: The choice for motorhomes, campervans, or if you need to pack it all away. They’re lighter and more convenient, but you pay a premium for it.

For my stationary workshop, rigid panels were a no-brainer. One bit of advice: if you’re using multiple panels and there’s any chance of one being partially shaded (by a tree, another building, etc.), wire them in parallel, not series.

Concrete picks:

• Foldable 400W (mobile): ALLPOWERS 400W foldable solar panel kit, ~£400
• Rigid 400W (stationary): Renogy 400W Mono or JA Solar 410W
• Backup if sold out: DOKIO 300W portable kit or BougeRV 400W folding suitcase

Component 5 — Fuses, cables, and connectors

This is the boring bit, but it’s what separates a safe, reliable system from a fire hazard. Getting this right is non-negotiable. Here’s my minimum shopping list:

• A big fuse: An ANL-style 300A fuse, right on the positive terminal of the battery.
• AC protection: An RCD breaker (16A / 30mA) on the 230V output of the inverter, before your sockets.
• Proper connectors: MC4 connectors for the solar panels. They’re the industry standard for a reason.
• Thick copper cable: 50 mm² for the run between the battery and inverter, and proper 6 mm² solar cable from the panels to the controller. Details: cable size for a 2000W inverter.
• A kill switch: A big 200A DC battery disconnect switch. It makes it safe to work on the system.

You can buy these bits separately, but I found a kit on Amazon for about £80 that had everything. The one thing you must never, ever skip is that main battery fuse. A dead short on one of these batteries without a fuse is… explosive.

Wiring — step by step

I laid everything out on the bench before I mounted it to the wall. It helps to see it all. Here’s the order I connected everything:

1. Battery → DC disconnect switch → Inverter: I used the thick 50 mm² cable here, keeping it as short as I could.
2. Battery positive terminal → ANL fuse holder → DC disconnect switch: The fuse needs to be as close to the battery as physically possible.
3. Solar panels → MC4 connectors → MPPT controller → Battery terminals: I connected the controller to the battery first, so it knew what voltage it was dealing with, before connecting the panels.
4. Inverter 230V AC output → RCD breaker → BS 1363 3-pin sockets: This gives me two standard UK plug sockets, properly protected.
5. Earthing: I ran a 6 mm² green-and-yellow earth wire from the metal case of the inverter and the RCD enclosure to a common earthing point.

To power it up for the first time, I flipped the main battery switch on, watched the MPPT controller wake up, and only then did I turn on the inverter. Powering down is the exact reverse.

My biggest mistake — and why cable cross-section isn’t where you save money

I’d be lying if I said it all went perfectly first time. My big mistake was with the cables connecting the battery to the inverter. I had some 35 mm² cable left over from another project, and thought, “That’ll be good enough, it’s only a metre long.”

It wasn’t.

The first time I properly tested the system, I plugged in my 1800W kettle. The inverter hummed, the kettle started to heat up… and then the inverter’s low-voltage alarm started screaming and it shut down. I was baffled. The battery was fully charged. I tried again. Same thing. Then I noticed a faint smell of hot plastic. I put my hand on the big red cable and it was roasting hot.

What I’d completely failed to appreciate was voltage drop. At 12V, a 2000W load is pulling over 160 amps. My “good enough” cable was acting like a resistor, turning precious battery power into heat. The voltage was dropping so much before it even reached the inverter that the inverter thought the battery was flat.

The biggest lesson I learned: Don’t guess with cable sizes. I immediately ordered proper 50 mm² pre-crimped cables. The difference was night and day. The kettle boiled without a single beep from the inverter, and the cables stayed completely cool. It was a stupid, dangerous mistake, but one I’ll never make again. The numbers are there for a reason.

When a pre-built power station still wins

Look, as much as I love my DIY setup, I’m not a complete zealot. There are definitely times when I’d still tell a friend to buy an EcoFlow or Jackery off the shelf.

1. If you’re constantly on the move: If you need to chuck it in the back of the car every weekend for camping or a market stall, a pre-built unit with its neat handles and rugged case wins every time. My setup weighs a tonne and is bolted to a wall.
2. If you’re renting: If your landlord would have a fit at you drilling holes and fitting permanent electrical gear, a portable station is the only sensible choice.
3. If you need a proper UPS: The big brands have a super-fast switchover (under 30 milliseconds) that can act as a proper Uninterruptible Power Supply for a home office PC. My DIY setup can’t do that.

For pretty much any other fixed scenario – your shed, allotment, garage, a permanent motorhome installation – I believe DIY wins by a country mile.

Complete shopping list — all components at a glance

Here’s my UK bill of materials with direct Amazon.co.uk links. Sequence is exactly how I assembled it:

1. LiFePO4 leisure battery (200Ah/12V, 200A BMS): Power Queen 12V 200Ah PLUS — ~£350
2. 2000W pure sine inverter (Value): Renogy 2000W Pure Sine 12V→230V with UK sockets + UPS — ~£250
3. 2000W pure sine inverter (Premium): Victron Energy Smart 2000VA 12V/230V with Bluetooth — ~£525
4. MPPT charge controller: Victron SmartSolar MPPT 100/50 with Bluetooth — ~£137
5. 400W foldable solar panel: ALLPOWERS 400W foldable solar panel — ~£400
6. Cable, ANL fuse & disconnect kit: FHA50 ANL Inline Fuse Holder (£17) — plus 50 mm² copper cable and a 200A DC disconnect, roughly £60 more (£80 all-in)

Pre-built power stations as an alternative:

• EcoFlow DELTA 3 Plus 1024Wh — £699
• Jackery Explorer 2000 v2 2042Wh — £1,061

A note on availability: If a main pick is sold out, the alternatives I listed in each component section above are direct drop-in replacements — same safety class, similar performance, similar price range. Links marked with (*) are affiliate links; no extra cost to you.

Verdict — when DIY pays off

So, should you build your own? For me, the answer is a resounding yes.

Go DIY if:

• You have a fixed spot for it: a shed, garage, or a permanent spot in a motorhome.
• You’re building it to last and want it to run for the next 5-10 years.
• You like the idea of being able to expand it later by just adding another battery or panel.
• You want the most bang for your buck and are happy to spend an afternoon putting it together.

Buy a power station if:

• You need to carry it around regularly. Portability is king.
• You love the idea of a slick app on your phone to monitor everything.
• You need that ultra-fast UPS feature for sensitive electronics like a desktop computer.
• You just don’t fancy learning about wiring diagrams and crimping lugs.

The choice was simple for me. I now have a beast of a system in my workshop that cost less than half of a big-brand equivalent. And for weekend trips? I picked up a small Jackery Explorer 500 v2. The best of both worlds, and the combined cost was still less than one of those monster 2 kWh pre-built units.

Top Picks

Core Battery

Power Queen

Power Queen 12V 200Ah PLUS LiFePO4 Deep Cycle Lithium Battery, 200A BMS, 2560Wh

• ✓4.3 ★ (28 reviews)
• ✓200A BMS — ~2,560W continuous, enough for a 2000W inverter

£349.99
Prices & availability may change.

Check on Amazon *

Value

Renogy

Renogy 2000W Pure Sine Wave Inverter, 4000W Peak 12V DC to 240V AC Power Converter with UK Sockets, UPS Function

• ✓4.4 ★ (198 reviews) — solid value pick, UPS function included

£249.99
Prices & availability may change.

Check on Amazon *

Premium Pick

Victron Energy

Victron Energy Smart 2000VA 12V/230V — Pure Sine Wave Inverter with Bluetooth

• ✓Industry-standard for marine, campervan and off-grid builds
• ✓Bluetooth + VictronConnect app (live monitoring)
• ✓High peak-load tolerance for tools and compressors (4.8 ★)

£524.99
Prices & availability may change.

Check on Amazon *

Victron Energy SmartSolar MPPT 100V 50 amp 12/24-Volt Solar Charge Controller (Bluetooth)

• ✓4.7 ★ (2220 reviews)

£137.28
Prices & availability may change.

Check on Amazon *

ALLPOWERS 400W Foldable Solar Panel, Portable Solar Panel, Solar Charger, Solar Kit, Solar Module for Power St

• ✓3.9 ★ (36 reviews)

£399.99
Prices & availability may change.

Check on Amazon *

FHA50 ANL Inline Fuse Holder Nickel 1/0 2 4 GA AWG Gauge without Fuse 5 Pack

• ✓4.4 ★ (260 reviews)

£16.99
Prices & availability may change.

Check on Amazon *

Pre-Built Alt

ECOFLOW Portable Power Station DELTA 3 Plus, 1024Wh LiFePO4 Battery, Fully Charges in 56 Minutes, 1800W Solar

• ✓4.5 ★ (199 reviews)

£699.00
Prices & availability may change.

Check on Amazon *

Jackery

Jackery Explorer 2000 v2 Portable Power Station, Lighter & Smaller 2kWh LiFePO4 Solar Generator, 2200W/2042Wh

• ✓4.4 ★ (40 reviews)

£1,061.00
Prices & availability may change.

Check on Amazon *