Rust Furnace Guide: Smelting, Large & Electric

Smelting guide, updated 2026

The Rust furnace is the first real workbench of your wipe. Ore you mine is useless until you cook it, and the furnace is what turns raw metal ore into metal fragments, sulfur ore into sulfur, and high quality metal ore into the HQM that armour, guns and end game builds run on. Every base has at least one, and the good ones have a wall of them.

There are three furnaces to choose from, and picking the right one saves you a mountain of wood and time. The standard furnace is free and known by default, the Large Furnace smelts 5,000 ore in a single load, and the Electric Furnace ditches wood entirely and runs on power. They all smelt the same ores, but the cost, the speed and the fuel are wildly different.

This guide covers all three: exact craft costs, how to get each one, the smelting rates per minute, the charcoal and wood math that decides how efficient you are, how much power the electric furnace needs and how to wire it, and how the August 2026 Power Trip update fits in. Every number here is checked against the Facepunch wiki, RustHelp, RustClash and Corrosion Hour, not guessed.

TL;DR The standard Rust furnace costs 200 stone, 100 wood and 50 low grade fuel, needs no workbench and is known by default. It smelts one metal fragment every 3.3 seconds (18 a minute) and drops charcoal as it burns wood. The Large Furnace costs 600 wood, 500 stone and 75 low grade at Workbench 2 (or 350 scrap at Outpost), holds 5,000 ore at once, and is far more wood efficient, so it is the clan choice for bulk metal. The Electric Furnace costs 200 metal fragments and 5 HQM, draws just 3 power, smelts 5 to 3 faster than a normal furnace and needs no wood, but it makes no charcoal. Rough rule: standard furnaces early and for charcoal, a large furnace for bulk metal, electric furnaces for a wired main base. All of it wipes on the force wipe.

What It Is
Furnace Stats
The Three Types
How to Get One
Smelting Rates
Wood & Charcoal
Large Furnace
Electric Furnace
Power & Wiring
Power Trip Update
Which Is Best
Skins
Pro Tips
FAQ

The three furnaces in Rust shown side by side as in-game item renders: the standard Furnace built from 200 stone and 100 wood, the Large Furnace that smelts 5,000 ore at once, and the Electric Furnace that runs on 3 power with no wood — The three furnaces side by side. Same job, very different cost, speed and fuel.

Freestandard furnace, known by default

5,000ore per large furnace load

3 powerto run an electric furnace

~0.75charcoal per wood burned

What Is a Furnace in Rust?

A furnace is a deployable that smelts mined ore into usable materials. You drop ore into it, add wood as fuel (or power, for the electric version), and it slowly converts the ore. Metal ore becomes metal fragments, sulfur ore becomes sulfur, and high quality metal ore becomes high quality metal. Without a furnace, every rock you break is dead weight, so it is one of the very first things you build on a fresh spawn.

The standard furnace is known by default, which means you can craft it the moment you have the materials, no research and no workbench required. That makes it the backbone of early game progression: mine nodes, smelt the ore, and turn it into the fragments you need for tools, walls and your first workbench. As you tech up you unlock the Large Furnace for bulk smelting and the Electric Furnace for automation, but the humble stone furnace never really leaves your base.

One thing to know before you place any of them: a furnace cannot be picked back up once deployed. If you want to move it, you have to destroy it and craft a new one, so think about placement before you commit. Put your furnaces somewhere sealed and defensible, because a smelting furnace glows and gives off light that can reveal a base at night.

Rust Furnace quick stats: crafted from 200 stone, 100 wood and 50 low grade fuel with no workbench and known by default, 500 HP, smelts one metal fragment every 3.3 seconds, produces charcoal about 75 percent of the time per wood burned, 96 hour decay, 120 scrap to research although it is already known, recycles into 120 stone 60 wood and 30 low grade fuel, and despawns 5 minutes after being dropped — Every core number for the standard furnace on one card.

Rust Furnace Stats and Facts

Here is the standard furnace in one table, pulled from the Facepunch wiki and cross checked against RustHelp and RustClash.

Stat	Value
Craft cost	200 Stone, 100 Wood, 50 Low Grade Fuel
Workbench	None, known by default
Craft time	30s by hand, 7s at Workbench 2+
Health	500 HP
Decay	96 hours (indoors, upkeep free)
Smelt speed	1 metal fragment every 3.3 seconds
Charcoal	About 75% chance per wood burned
Research table	120 scrap (irrelevant, already known)
Recycle	120 Stone, 60 Wood, 30 Low Grade Fuel
Pick up	No, must destroy to move
Shortname	furnace

Two numbers matter most here. The furnace is known by default, so nobody ever needs to research it, and it recycles for exactly 60% of its cost, which is worth knowing if you ever want the stone and low grade back. Everything else is about how fast and how efficiently it turns ore into gear, which is where the type you pick starts to matter.

The Three Types of Furnace

Rust has three furnaces, and they are not simply small, medium and large. Each one trades something. The standard furnace is free but wood hungry, the large furnace is efficient but a pain to protect, and the electric furnace is hands off but makes no charcoal. Here is the quick comparison.

Furnace	Craft	Capacity	Fuel	Charcoal
Furnace	200 stone, 100 wood, 50 LGF	A few stacks	Wood	Yes
Large Furnace	600 wood, 500 stone, 75 LGF (WB2)	5,000 ore (5 slots)	Wood	Yes
Electric Furnace	200 metal frags, 5 HQM (WB2)	About 2 stacks	3 power	No

The short version: the standard furnace is your default workhorse and your charcoal source. The large furnace is the bulk metal machine for when you are melting thousands of ore at a time. The electric furnace is the automation option that never needs wood, which is perfect for a wired base, as long as you have another source of charcoal. We break each one down in its own section below.

How to Get a Furnace in Rust

Getting your first furnace is the easy part. Getting the big ones takes a little tech or a trip to Outpost. Here is how you get each one.

Standard furnace, just craft it. The blueprint is known by default. Gather 200 stone, 100 wood and 50 low grade fuel, open your crafting menu, and make it anywhere. No workbench needed. This is almost every player’s first furnace.
Large furnace, Workbench 2 or Outpost. Unlock it on the tech tree (about 250 scrap) or research it for 60 scrap, then craft it at a Workbench 2 for 600 wood, 500 stone and 75 low grade fuel. Short on time? Buy a finished one at Outpost for 350 scrap.
Electric furnace, tech tree or loot. Research it for 30 scrap plus a furnace, or unlock it on the tech tree behind the Small Generator. Craft it at a Workbench 2 for 200 metal fragments and 5 HQM. You can also loot one from elite and locked crates if you get lucky.

Low Grade Fuel Is the Hidden Cost Every furnace recipe needs low grade fuel, which trips up new players who have plenty of stone and wood but nothing to burn. You get low grade by refining crude oil in a small oil refinery, or by combining animal fat and cloth. Keep a stash of it, because you will want more furnaces as your base grows.

Smelting Rates: How Fast Each Furnace Smelts

This is the number most guides skip, and it is the one that actually decides how long you stand around waiting. Every furnace smelts each ore at a fixed rate. The large furnace looks five times faster only because it runs five ore slots at once, so its per minute output is the total across all slots.

Rust furnace smelting rates per minute: metal ore becomes metal fragments at 18 per minute in a standard furnace, 90 in a large furnace and 30 in an electric furnace; sulfur ore becomes sulfur at 36, 180 and 60 per minute; and high quality metal ore becomes high quality metal at 9, 45 and 15 per minute, with the standard furnace taking 3.3 seconds per metal fragment, 1.7 seconds per sulfur and 6.7 seconds per high quality metal — Output per minute for every ore, per running furnace. Electric is 5 to 3 faster than standard, large runs 5 slots at once.

Ore → Product	Furnace	Large Furnace	Electric Furnace
Metal Ore → Fragments	18 / min	90 / min	30 / min
Sulfur Ore → Sulfur	36 / min	180 / min	60 / min
HQM Ore → HQM	9 / min	45 / min	15 / min
Time per unit (metal)	3.3 sec	3.3 sec per slot	2.0 sec

Notice that sulfur smelts twice as fast as metal, and HQM is the slowest by far. That is why players who are raiding stockpile sulfur ore and melt it in bulk, and why HQM always feels like it takes forever. If you are gathering ore quickly with a jackhammer or an ore tea boost, a single standard furnace will fall behind fast, which is the moment to build more furnaces or step up to a large one.

Wood, Charcoal and Why Your Furnace Is a Charcoal Factory

Burning wood does two jobs. It smelts your ore, and it drops charcoal as a byproduct. Charcoal is the bulk ingredient in gunpowder, and gunpowder is the base of every explosive in the game, so your furnace is quietly one of the most important raiding tools you own.

How charcoal works in Rust: burning wood in a furnace yields about 0.75 charcoal per wood, roughly a 75 percent chance each burn; smelting 1,000 metal ore needs about 1,670 wood in a standard furnace but only about 330 wood in a large furnace, around 40 percent of the wood; and charcoal feeds the explosives chain, turning into gunpowder and then C4 and rockets — Wood becomes charcoal at about 75% per burn, and charcoal feeds the whole explosives chain.

Every piece of wood you burn has roughly a 75% chance to leave a charcoal behind, so figure on about 0.75 charcoal per wood. That means you almost never need to farm charcoal on purpose. If you are smelting ore, you are already stacking charcoal at the same time. If you specifically want a pile of it, the fastest way is to fill a furnace (or several) with nothing but wood and let it burn, or use a large furnace since it chews through the most wood.

Wood efficiency is where the large furnace pulls ahead. Because five ore slots share one fire, it wastes far less wood per bar. Smelting 1,000 metal ore costs about 1,670 wood in a standard furnace, but only around 330 wood in a large furnace, roughly 40% of the wood for the same result. Over a wipe that is thousands of trees saved.

The Wood Efficiency Trick In a standard furnace, do not dump a full stack of wood on top of a small amount of ore. Leftover wood keeps burning after the ore is done, which is wasted fuel (you still get charcoal, but no smelting). Add roughly the wood you need for the ore in the slot, or just use a large furnace for big jobs where the shared fire does the efficiency work for you.

Once you have charcoal, the chain is simple: charcoal plus sulfur makes gunpowder (30 charcoal and 20 sulfur per 10 gunpowder), and gunpowder makes everything from ammo to C4 and rockets. If you want to know exactly how much of each you need for a raid, our raid cost calculator does the math for you.

The Large Furnace: Bulk Smelting for Clans

The Large Furnace is the upgrade you build when a single furnace can no longer keep up. It has five ore slots that smelt at the same per unit speed as a standard furnace, so its throughput is roughly five times higher, and it is far more wood efficient because that one central fire heats every slot.

The Large Furnace in Rust: crafted from 600 wood, 500 stone and 75 low grade fuel at Workbench 2 or bought at Outpost for 350 scrap, it has 5 ore slots that smelt 5,000 ore at once, 1,500 HP with an 8 hour decay, must be placed on terrain with a 4 foundation footprint, and smelts about 5 times faster than a normal furnace at 90 metal fragments per minute — Five ore slots, one shared fire, and far less wood per bar. The clan choice for bulk metal.

It holds 5,000 ore at once across five input slots, plus two stacks of wood (up to 2,000) for fuel, and five output slots that fill with your finished product and charcoal. At 1,500 HP it is tougher than a standard furnace too. The catch is placement: the large furnace must sit on open terrain, it cannot go on foundations or floors, and it takes up a four foundation footprint. That makes it the hardest furnace to hide, so smart bases wall it into a dedicated smelting room built around it.

Watch the Decay Because it sits on terrain rather than inside your base, the large furnace decays faster, in around 8 hours if left unprotected, compared to 96 hours for a standard furnace indoors. Build walls and a roof around it and keep a tool cupboard nearby, or you will come back to a broken furnace and lost ore.

If you do not want to grind the tech tree, you can buy a finished large furnace at Outpost for 350 scrap. That is often the fastest route on a fresh wipe when you have scrap from monument runs but have not unlocked the blueprint yet. Recycle it later for 360 wood, 300 stone and 45 low grade if you ever want the materials back.

The Electric Furnace: Smelt With Power, Not Wood

The Electric Furnace is the modern option, and it changes how a main base smelts. Instead of wood, it runs on electricity, drawing a tiny 3 power from your grid. That means no more hauling wood, no fire to feed, and it smelts about 5 to 3 faster than a standard furnace. The trade off is real though: it produces no charcoal at all.

The Electric Furnace in Rust: it draws 3 rW into its Power In socket and runs on electricity instead of wood, so it produces no charcoal, which is its big trade-off; it is crafted from 200 metal fragments and 5 high quality metal at Workbench 2, smelts about 5 to 3 faster than a normal furnace, and can be wired to a switch or timer for hands-off automation — Three power, no wood to haul, but zero charcoal. The automation furnace for a wired base.

You craft it at a Workbench 2 for 200 metal fragments and 5 HQM, and it has 500 HP like the standard furnace. Because it is a wired deployable, you can hook it up to a switch or a timer and automate your smelting completely, turning it on and off without touching it. It even deploys on boats, so a sea base can smelt on the move.

The no charcoal drawback is the whole reason wood furnaces do not disappear. If you go all electric, you cut off your charcoal supply and therefore your gunpowder, so most bases run a mix: electric furnaces for the metal and sulfur you smelt constantly, plus a couple of standard furnaces burning wood whenever you need to top up charcoal for a raid.

How Much Power Does an Electric Furnace Use, and How to Wire It

The most searched electric furnace question is simple to answer: an electric furnace uses 3 power (3 rW). That is tiny, which is what makes it so appealing. A basic solar setup can run several at once during the day.

How to wire an electric furnace in Rust: run three large solar panels that make about 60 power at midday into a rechargeable battery so it keeps running at night, combine the panels with a root combiner and split off 3 power with an electrical branch, then use a wire tool to connect that 3 power into the furnace's Power In socket — The simplest power setup: solar to a battery to a branch to the furnace, all joined with a wire tool.

The simplest reliable setup is three large solar panels, a rechargeable battery, a root combiner, an electrical branch and a wire tool. Three panels make about 60 power at midday, which is enough to run up to 20 electric furnaces at once while the sun is up. Solar drops to zero at night, so you run it through a battery that charges by day and keeps your furnace smelting after dark.

Place your solar panels on a roof, angled at the sky, and run their outputs into a root combiner to merge them into one line.
Feed that line into a battery (medium or large) so it stores power for the night.
Run the battery’s output to an electrical branch and set the branch to pass 3 power down the branch line.
Wire that 3 power into the furnace’s Power In socket with the wire tool. Add a smart switch or timer in the line if you want to automate it.

Scaling to a Furnace Wall Because each furnace only needs 3 power, a modest battery bank can run a whole wall of electric furnaces. Use branches to peel off 3 power per furnace down the line, and remember the battery’s output rating, not just its capacity, limits how many you can run at night. If furnaces stop smelting after dark, your battery is out of stored power, not broken.

Electric Furnaces and the August 2026 Power Trip Update

The big update of the moment is Power Trip, which landed on 6 August 2026 as the August force wipe. It is worth clearing up what it did and did not change for furnaces, because the two topics get tangled together.

Power Trip did not change how the electric furnace works. It still draws 3 power, still makes no charcoal, and still wires up exactly the same way in your base. What the update did do is make electricity a much bigger deal across the whole map. It rebuilt the Power Plant into a server wide power grid fed by Heavy Fuses, added climbable powerlines with roadside transformers, and gated new monument perks and even a satellite crash event behind how much power the plant is running.

So if you came here after the update wondering whether your electric furnace setup needs changing, it does not. Your base electricity still comes from your own solar panels, batteries and generators, exactly as before. The Power Trip changes are about monument power, not your smelting room. If you want the full breakdown of the new grid, Heavy Fuses and the four power phases, that is all in our dedicated Power Plant guide.

Which Furnace Is Best in Rust?

There is no single best furnace. The right one depends on where you are in the wipe and what you are smelting. Here is the honest breakdown.

Solo or early wipe: the standard furnace wins. It is free, known by default, cheap to build, and it makes the charcoal you need for gunpowder. One or two is plenty until you tech up.
Bulk metal or a clan: the large furnace wins. 5,000 ore per load and the least wood per bar make it the efficient choice when you are melting thousands of ore, and you can buy one at Outpost to skip the grind.
Automation or a main base: the electric furnace wins. No wood to haul, wire it to a timer and forget it, ideal with a solar and battery setup. Just keep a wood furnace around for charcoal.

In practice, a well built base runs all three: a couple of standard furnaces for charcoal, a large furnace for bulk metal ore, and a bank of electric furnaces wired to solar for constant hands off smelting. You do not have to pick one and stick with it.

Built a whole furnace wall this wipe? Every furnace, all your smelted metal and your entire base reset on the force wipe. Check the countdown before you sink hours into a smelting setup.

Force Wipe Countdown

Rust Furnace Skins

The furnace has a handful of workshop skins that change how it looks, and that is all they do. Furnace skins are purely cosmetic, so they do not smelt faster, hold more ore or change any stat. Pick whichever one you like the look of, or run the default, it makes no difference to performance. The same goes for large furnace and electric furnace skins where they exist.

Skins Are Cosmetic Only If a trading site or a video claims a furnace skin smelts faster or is pay to win, ignore it. Skins in Rust never change stats. The only thing a furnace skin affects is the look of the model in your base.

Pro Tips for Furnaces in Rust

Place before you commit. A furnace cannot be picked back up, so put it in a sealed room, not out in the open where its glow reveals your base.
Do not overload wood. In a standard furnace, add roughly the wood the ore needs, or leftover wood keeps burning and wastes fuel.
Use a large furnace for bulk. It burns about 40% of the wood a standard furnace does for the same metal, and holds 5,000 ore at once.
Buy the large furnace at Outpost for 350 scrap if you have not unlocked it yet, then recycle it later for the materials if you want.
Wall in your large furnace. It sits on terrain and decays in about 8 hours, so protect it and keep it in tool cupboard range.
Run a mix. Electric furnaces for constant smelting, wood furnaces for charcoal. Going all electric cuts off your gunpowder supply.
Split stacks for parallel smelting. Splitting ore into more slots lets more of it smelt at once in the standard furnace, which finishes a big batch sooner.
Keep low grade fuel stocked. Every furnace recipe needs it, and running out is the most common reason new players cannot build one.

Rust Furnace FAQ

How do you make a furnace in Rust?

The standard furnace blueprint is known by default, so you do not need to research it or use a workbench. Gather 200 stone, 100 wood and 50 low grade fuel, open your crafting menu, and craft it. It takes 30 seconds by hand, or as little as 7 seconds at a Workbench 2 or higher. Then place it somewhere sealed, because a furnace cannot be picked back up once deployed.

How do you get a furnace in Rust?

You get the standard furnace by crafting it, since its blueprint is known by default and only needs 200 stone, 100 wood and 50 low grade fuel. The large furnace is unlocked on the tech tree or researched for 60 scrap, then crafted at a Workbench 2, or bought finished at Outpost for 350 scrap. The electric furnace is researched for 30 scrap or unlocked on the tech tree behind the Small Generator, crafted at a Workbench 2 for 200 metal fragments and 5 HQM, and it can also be looted from elite and locked crates.

What is the best furnace in Rust?

There is no single best furnace, it depends on your situation. The standard furnace is best early game and for solos because it is free and makes charcoal. The large furnace is best for bulk metal and clans because it holds 5,000 ore and uses far less wood per bar. The electric furnace is best for a wired main base because it needs no wood and can be automated, though it makes no charcoal. Most bases run a mix of all three.

How much power does an electric furnace use in Rust?

An electric furnace uses 3 power (3 rW). That is very low, so a basic setup of three large solar panels, which make about 60 power at midday, can run up to 20 electric furnaces at once during the day. Because solar drops to zero at night, you run the power through a rechargeable battery so the furnace keeps smelting after dark.

How many solar panels do you need to power an electric furnace?

A single large solar panel makes up to 20 power at midday, so one panel is technically enough to run an electric furnace’s 3 power draw during the day. In practice you run three panels into a battery, which gives you about 60 power and enough stored charge to keep the furnace smelting at night. Three panels and a battery is the standard reliable setup and can run several furnaces at once.

Does the electric furnace make charcoal in Rust?

No. The electric furnace runs on electricity instead of burning wood, so it produces no charcoal at all. This is its biggest drawback. Since charcoal is the bulk ingredient in gunpowder and therefore explosives, most bases keep at least one wood burning furnace around for charcoal even if they smelt everything else electrically.

What is the best fuel for a furnace in Rust?

Wood is the only fuel a standard or large furnace uses, and it also produces charcoal as it burns. There is no better or worse fuel to choose, it is always wood. The electric furnace does not use fuel at all, it runs on 3 power from your electrical grid. So the real fuel choice is between wood, which gives you charcoal, and power, which does not.

How do you get charcoal in Rust?

Charcoal comes from burning wood in a furnace or campfire. Every wood you burn has roughly a 75 percent chance to leave a charcoal, about 0.75 charcoal per wood. Because smelting ore already burns wood, you stack charcoal automatically while you smelt, so you rarely need to farm it separately. If you want a dedicated pile, fill a furnace with nothing but wood and let it burn.

What is the fastest way to get charcoal in Rust?

The fastest way to make charcoal is to burn a lot of wood at once, and the large furnace burns the most wood, so filling large furnaces with wood produces charcoal in bulk. Otherwise, you get charcoal for free as a byproduct every time you smelt ore, so a busy furnace setup usually keeps you stocked without any extra effort. Charcoal is only worth farming on purpose when you need a big gunpowder supply for a raid.

Can you pick up a furnace or large furnace in Rust?

No. Once you place any furnace, standard, large or electric, you cannot pick it back up. If you want to move it, you have to destroy it and craft a new one, or recycle the destroyed materials. That is why placement matters, especially for the large furnace, which must sit on open terrain and takes up a four foundation footprint.

How much does a large furnace cost at Outpost?

A large furnace costs 350 scrap at the Outpost vending machines. That is often the fastest way to get one on a fresh wipe if you have scrap from monument runs but have not unlocked the blueprint yet. Prices at safe zone vendors can drift slightly with the dynamic pricing system, but 350 scrap is the base cost.

Is the electric furnace better than the large furnace?

They are for different jobs. The large furnace smelts far more at once (5,000 ore across five slots) and makes charcoal, so it is better for bulk metal. The electric furnace is slower and holds less, but it needs no wood and can be automated with a switch or timer, so it is better for a wired main base that smelts constantly. If you can only build one and you raid a lot, the large furnace is more flexible because of the charcoal. If you have a solar setup and want hands off smelting, the electric furnace wins.

How long does a furnace take to smelt ore in Rust?

A standard furnace smelts one metal fragment every 3.3 seconds (18 a minute), one sulfur every 1.7 seconds (36 a minute), and one high quality metal every 6.7 seconds (9 a minute). The electric furnace is faster at 30 metal, 60 sulfur and 15 HQM per minute. The large furnace runs five slots at once, so it clears 90 metal, 180 sulfur and 45 HQM per minute in total. Sulfur is always the fastest to smelt and HQM the slowest.

Can you put a furnace on a foundation in Rust?

A standard furnace and an electric furnace can be placed on foundations and floors, which is why they live inside your base. The large furnace cannot. It must be placed directly on open terrain and cannot go on any building block, and it takes up a four foundation footprint, so you build your smelting room around it rather than placing it on the floor.

Do furnace skins change smelting speed in Rust?

No. Furnace skins are purely cosmetic and change only the look of the model. They do not smelt faster, hold more ore, or change any stat. Rust skins never affect gameplay, so anything claiming a furnace skin is faster or pay to win is wrong.

Did the Power Trip update change furnaces in Rust?

No. The Power Trip update from 6 August 2026 rebuilt the Power Plant monument into a server wide power grid and expanded electricity across the map, but it did not change how any furnace works. The electric furnace still draws 3 power, still makes no charcoal, and still wires up the same way. Your base electricity still comes from your own solar, batteries and generators, exactly as before the update.

Final Thoughts

The furnace is one of those items you build without thinking on wipe day and then never stop using. The standard Rust furnace gets you off the ground and keeps you in charcoal, the large furnace turns bulk ore into bulk metal for a fraction of the wood, and the electric furnace lets a wired base smelt around the clock without anyone hauling logs. Learn the smelting rates and the wood math and you stop wasting trees and time.

If you take one habit away, make it running a mix. A couple of wood furnaces for charcoal, a large furnace for metal, and electric furnaces on a solar line is the setup most established bases converge on, and it covers every job at once. And remember the charcoal your furnace makes is the same charcoal that becomes gunpowder, so your smelting room is also your explosives supply.

Just keep the wipe clock in mind. Every furnace, all that smelted metal and the whole base go back to nothing on the force wipe, so check the countdown before you commit a wipe’s worth of ore to a smelting wall.

Sources

Standard furnace craft cost, shortname, recycle output and that the blueprint is known by default: Facepunch Wiki, Furnace
Electric furnace 3 power draw, craft cost, no fuel description and item data: Facepunch Wiki, Electric Furnace
Smelting rates per furnace, large furnace 5,000 ore capacity and charcoal output, HP and decay figures: Corrosion Hour, Cooking, Smelting & Refining Guide
The Power Trip power grid update, Heavy Fuses and the map wide electricity changes: Facepunch, Power Trip Update
Full Power Plant grid, phases and Heavy Fuses, plus the satellite crash it unlocks: whenisforcewiperust.com, Rust Power Plant Guide
The game itself: Facepunch Studios