What Is Coppicing for Firewood (Yield Per Acre)
Coppicing is a way to grow firewood by cutting suitable broadleaf stems near the base and letting the stool regrow. A rough planning range for productive, managed coppice is 0.25–0.75 stacked cord per acre per year, not a promise. Your best estimate comes from measuring local growth and dividing harvestable volume by the rotation length.
A bundle of straight poles can look like a lot of wood, yet still make a modest stack once you allow for air gaps and compare it with a full cord. That difference is why “yield per acre” can be hard to picture. I find it clearer to start with what coppicing does, then use site measurements to estimate the firewood you can actually harvest.
What coppicing means for firewood
Coppicing is a repeated harvest method for suitable trees and shrubs. A stem is cut close to its base, leaving the established base, called a stool, in place. The stool may then produce new shoots. The method can provide recurring wood, but results depend on the species and growing conditions.
Coppicing is not simply cutting any tree low and expecting it to grow back. Species vary in how well they regrow from a cut stool. Site conditions matter too: moisture, soil, light, competing plants, and past management can all affect shoot growth and survival.
A rotation is the time between cuts on the same area. A coppice cycle is one round of cutting and regrowth. If you harvest one section each year, each section still needs its full rotation before it is cut again.
The main benefit for a firewood grower is a planned supply of regrowth without starting every harvest from seed or planting new trees. The main limit is that this supply is not automatic: stools can die, shoots can grow poorly, and some wood may be unsuitable or lost during harvest.
Coppice yield per acre: a useful planning range
Yield per acre is the amount of wood harvested from a given area, usually described for one harvest or averaged over a year. For early planning, use 0.25–0.75 stacked cord per acre per year for productive, managed coppice. Treat it as a screening range, not a guaranteed yield.
At a 10-year rotation, that annualized range implies about 2.5–7.5 stacked cords per acre at harvest, before losses. The arithmetic is simple: annual yield × rotation years. But it does not mean every acre will produce those amounts. A poor site may yield less, while an intensively managed short-rotation system may yield more.
A cord is 128 cubic feet of stacked wood, including the air spaces between pieces. It is a stack measuring 4 feet high, 4 feet deep, and 8 feet long. A pile, truckload, or weight is not automatically a cord. Converting from loose, green, or weighed wood varies with species, piece size, moisture, and how the wood is stacked.
| Planning figure | What it means | Important limit |
|---|---|---|
| 0.25 cord/acre/year | Lower end of the rough screening range | Not a minimum for every site |
| 0.75 cord/acre/year | Upper end of the rough screening range | Not a promise for a productive acre |
| 2.5–7.5 cords/acre at 10 years | Annual range multiplied by 10 | Before harvest losses; actual growth may differ |
To estimate firewood rather than just standing wood, account for unusable pieces, breakage, and wood left on site. Keep the unit consistent: compare stacked cords with stacked cords, or compare measured volumes only after converting them on a clear basis.
How to estimate yield on your own land
A site estimate uses measured growth from representative plots, then scales it to the area and rotation. It is more useful than borrowing a single number from a different woodland. Record what grows, how many stools survive, and the size of the stems you expect to harvest.
Start with a map of the area you intend to manage. Divide it into sections if soil, slope, moisture, or tree cover changes across the site. Choose sample plots that reflect those differences rather than measuring only the most vigorous patch.
In each plot, record:
- Species and number of living stools.
- Number of harvestable stems per stool.
- Stem dimensions, measured consistently.
- Signs of dead or weak stools and competing vegetation.
- Site moisture, light, and other conditions that may help explain growth.
- Wood harvested and losses after cutting and stacking.
Use this basic calculation:
Annualized yield = harvestable stacked volume from the measured area ÷ plot area ÷ rotation years.
For example, if a measured plot produces 1 stacked cord over a 10-year rotation, its simple annualized rate is 0.1 cord per plot per year. Scale that rate to an acre only if the plot is representative. This example shows the arithmetic, not a claim about typical production.
If the stems are too small to stack or measure as firewood, use a consistent volume method and keep the result separate from cord estimates until you have a reliable conversion. Record your method so later measurements can be compared fairly. After each harvest, update the estimate using actual stacked volume and surviving stools.
Worked site scenarios: why acres do not yield alike
These planning scenarios show how the same acre and rotation can lead to different estimates. They are arithmetic examples based on the rough screening range, not measured case studies or forecasts for a specific woodland. A local plot measurement should replace them as soon as you have one.
| Scenario | Planning rate | Rotation | Implied harvest before losses |
|---|---|---|---|
| Lower-range productive site | 0.25 cord/acre/year | 10 years | 2.5 cords/acre |
| Upper-range productive site | 0.75 cord/acre/year | 10 years | 7.5 cords/acre |
| Same lower rate, longer rotation | 0.25 cord/acre/year | 15 years | 3.75 cords/acre |
The third row does not prove that a longer rotation will produce more wood in practice. It simply multiplies the same assumed annual rate by more years. Growth may change with age, competition, weather, management, or other site factors.
A practical approach is to use the range for rough planning, then measure a small representative area before making a larger commitment. If you plan to heat a home, compare the resulting estimate with your own fuel needs and keep a reserve for poor growth or harvest losses.
Equipment setup and coppice-site safety
A chainsaw helps cut stems, but it does not determine woodland yield. Choose the saw, bar, and chain according to the saw maker’s approved combinations and the stem size. Small stems can still move, spring, roll, or pinch a bar, so assess each cut before making it.
Before work, confirm permission, boundaries, access, weather, hazards, and escape routes. Check the chain brake, chain catcher, throttle lockout, chain tension, bar, and lubrication system. Wear chainsaw-rated leg protection, a helmet with eye and face protection, hearing protection, gloves, and suitable boots. Follow applicable work rules, including ANSI Z133 practices and OSHA 29 CFR 1910.266 where they apply.
Match chain pitch, gauge, drive-link count, sprocket, and bar. A 3/8-inch low-profile chain with a .050-inch gauge is one example, not a universal fit. Use the fuel and oil mix specified in the saw’s manual; 50:1 applies only if the manual calls for it. Use the specified bar-and-chain oil, and confirm that oil reaches the chain before cutting.
Start on stable ground using the manufacturer’s procedure. Engage the chain brake as directed, and check that the chain stops at idle. Do not use a saw with a faulty brake or a chain that moves at idle. Never use an unmatched bar and chain, bypass a safety device, or force a dull chain through wood.
Field cutting, stool protection, and yield measurement
Coppice cuts need to suit the species and site. Cut only stems you can control safely, protect the stool from tearing, and keep track of the wood removed. A careful harvest supports both safer work and a more useful record of actual yield.
Cut at a height and season suited to the species and local conditions; there is no single correct height or season for every coppice. Keep your footing stable and plan an escape path before cutting. Keep bystanders outside the work zone, and keep the bar nose clear of nearby wood.
Pay special attention to bent or tensioned stems. A stem under pressure can spring when cut, strike you, or pinch the bar. Assess its bend, support, and likely movement before cutting. Do not stand in its likely line of release or cut blindly through the compression side. If you cannot control the stem safely, leave it for someone with the right training and equipment.
After cutting, record the number of stools and stems harvested, then measure the stacked firewood. Note broken or unusable wood and any stools that appear damaged. This record lets you compare the next harvest with your original estimate and refine the yield for that site.
Maintenance, fuel, and seasonal storage
A maintained saw is easier to assess and less likely to cut poorly, but maintenance settings must come from the model’s manual. There is no safe universal depth-gauge clearance, engine speed, or oil-flow rate. Use the correct specifications for your saw and chain.
Stop the saw before making adjustments, clearing jammed wood, or carrying it. Let hot parts cool before refueling. Sharpen the chain and set its depth gauges to the chain maker’s instructions; do not force a dull chain through a stem. If the manual specifies idle or full-throttle speed checks, use the stated limits and a tachometer where required.
After work, inspect chain condition and tension. Clean the air filter, guide-bar groove, and sprocket area as the manual directs. Use the specified bar-and-chain oil. Oil type and flow can depend on the equipment and temperature, so do not substitute engine oil or assume one setting works for every saw.
For storage, follow the manufacturer’s fuel and cleaning instructions. Keep a simple record of servicing, fuel mix, sharpening, harvested volume, and stool survival. That record can help separate a change in woodland growth from a saw or cutting problem.
Conclusion and frequently asked questions
Coppicing can provide recurring firewood from suitable broadleaf plants, but yield per acre depends on the site, species, rotation, and harvest losses. Use 0.25–0.75 stacked cord per acre per year only as a rough planning range for productive, managed coppice. Measure local growth to make a better estimate.
Is there a guaranteed firewood yield per acre from coppicing?
No. Yield depends on species, site conditions, rotation, stool survival, and harvest losses.
How many cords might one acre produce in 10 years?
The rough planning range implies about 2.5–7.5 stacked cords per acre over 10 years, before losses. It is not a guaranteed harvest.
What does one cord mean?
A cord is 128 cubic feet of stacked wood, including air spaces. A loose pile or truckload is not necessarily a cord.
How do I estimate yield on my land?
Measure representative plots, estimate harvestable volume, and divide by plot area and rotation years. Record actual stacked volume after harvest to improve future estimates.
Does a longer rotation always give more firewood?
No. Multiplying an annual estimate by more years gives a planning figure, but actual growth can change with time and site conditions.
Can any tree be coppiced?
No. Regrowth depends on species and site. Confirm that the plants on your land are suitable before planning a coppice harvest.
Does a larger chainsaw increase yield per acre?
No. Saw size does not determine woodland growth. Use a saw and cutting setup approved for the saw and stem size.
Is 50:1 the right fuel mix for every chainsaw?
No. Use the ratio in the manufacturer’s manual. A 50:1 mix is correct only when that manual specifies it.
Why can a small coppice stem be dangerous to cut?
It can bend, spring, roll, or pinch the chain. Check how it is supported and where it may move before cutting.
What is the best next step if my yield estimate is uncertain?
Measure a small area representative of the woodland, keep records through one rotation, and revise the estimate using the harvest you actually stack.
(This article was written by one of our staff writers, Evan Bradley. Visit our Meet the Team page.)
