Are bioplastics expensive? That is the first question every brand asks once it starts looking at sustainable materials. As demand for them has grown, plastic manufacturers have added bio-based and biodegradable alternatives to their ranges, The short answer is yes, generally 20% to 100% more than the conventional plastic they replace, though the gap has narrowed as capacity has grown and varies enormously by material. This article covers the types of bioplastics, why they cost more, how the prices compare, and when the premium is worth paying.
Before answering whether bioplastics are expensive, it helps to know what they are. Bioplastics are made from renewable sources rather than, or as well as, petroleum. Conventional plastics come from a non-renewable feedstock and persist in the environment for centuries; global plastics production reached 430.9 million tonnes in 2024 and most of it is still fossil-based. Bioplastics offer an alternative built on natural polymers from agriculture: cellulose, potato and corn starch, sugarcane, and vegetable oils. Global bio-based plastics production capacity was around 2.31 million tonnes in 2025 (European Bioplastics) and is forecast to roughly double to 4.69 million tonnes by 2030 (European Bioplastics), which is fast growth from a small base: bioplastics remain well under 1% of total plastics production.
Before Asking Are Bioplastics Expensive: Bio-Based Is Not Biodegradable
The terminology causes more confusion than the economics, and it changes the answer to whether bioplastics are expensive for your product. and getting it wrong leads to false claims that regulators now act on.
Bio-based means made wholly or partly from renewable feedstock. It says nothing about how the material behaves at end of life. Bio-polyethylene made from sugarcane is chemically identical to fossil polyethylene and lasts just as long.
Biodegradable means it can be broken down by microorganisms. It says nothing about the feedstock, and, critically, nothing about the conditions required: many biodegradable plastics only break down at industrial composting temperatures and will persist in a landfill or the sea much like any other plastic.
Compostable is the meaningful standard, and it is certified: EN 13432 in Europe and ASTM D6400 in the United States require breakdown within a defined time under specified conditions, usually industrial composting. “Home compostable” is a separate and stricter certification.
When you ask are bioplastics expensive, note that a material can be bio-based and not biodegradable, biodegradable and not bio-based, or both. For anyone asking whether bioplastics are expensive, the answer depends on which of these you actually need.
Types of Bioplastics, and Are Bioplastics Expensive by Type?
- PLA (polylactic acid), made from corn or sugarcane starch, is the most widely produced bioplastic: clear, rigid, industrially compostable, and used in packaging, cups, food containers, and 3D printing filament. It softens at low temperatures, which limits its use for hot contents.
- PHA (polyhydroxyalkanoates), produced by bacterial fermentation, biodegrades in soil and marine environments as well as in composting, which makes it the most environmentally capable bioplastic and the most expensive.
- Bio-PE and bio-PET, made from sugarcane ethanol, are drop-in replacements chemically identical to their fossil equivalents: not biodegradable, but recyclable in existing streams and with a lower carbon footprint.
- Starch blends, the cheapest bioplastics, are used in bags, films, and disposable items.
- Cellulose-based plastics, from wood pulp, are among the oldest plastics of all and are used in films and coatings.
Why Are Bioplastics Expensive?
Four things explain why bioplastics are expensive. Scale is the largest: conventional plastics are produced in hundreds of millions of tonnes on infrastructure amortised over decades, while bioplastics are produced in single-digit millions in newer, smaller plants. Feedstock is the second: agricultural inputs cost more and vary more in price than oil and gas, particularly where they compete with food crops. Processing is the third: fermentation and polymerisation routes for materials like PHA are more complex and slower than cracking and polymerising an olefin. And demand is the fourth: without the volumes to justify continuous large-scale production, unit costs stay high, which is the circular problem the industry is working out of. That is the core reason are bioplastics expensive gets a yes: bioplastics production is currently running at about 72% of installed capacity, so the constraint is demand rather than supply.
Are Bioplastics Expensive Compared With Conventional Plastics?
Are bioplastics expensive in absolute terms? Prices move with both oil and agricultural markets, so any figure is a snapshot, but the rough ordering is stable. Starch blends sit closest to conventional plastics, sometimes within 20% to 30%. Asked another way, are bioplastics expensive relative to commodity resin? PLA typically runs 20% to 60% above the polypropylene or polystyrene it replaces. Bio-PE and bio-PET carry a premium of roughly 30% to 80% over their fossil equivalents. PHA is the most expensive, often two to four times conventional plastic.
Two things narrow the gap when you ask are bioplastics expensive in practice. Conventional plastic prices track oil, so when oil is expensive the premium shrinks. And recycled PET in Europe now costs more than virgin PET, because recycled-content mandates have pushed demand past supply, which shows that regulation can invert these comparisons entirely.
Are Bioplastics Expensive Enough to Rule Out?
Whether bioplastics are expensive enough to rule out depends on why you want them. If the driver is regulation, the question is not really about cost: single-use plastic bans, recycled-content mandates, and packaging rules in the EU and elsewhere increasingly make conventional plastic unusable for certain applications, and the premium is the price of market access. If the driver is brand positioning, the premium buys a claim that has to be substantiated, and a claim of “biodegradable” without certification is now the kind of statement that attracts regulatory attention under EU green-claims rules.
If the driver is genuine environmental improvement, the question of are bioplastics expensive gets more complicated. A compostable product only delivers its benefit where industrial composting exists to collect it. A bio-based drop-in resin like bio-PE delivers a real carbon reduction and stays recyclable in existing streams, which for many products is the better outcome. And recycled conventional plastic often has a lower footprint and lower cost than a bioplastic, which is why recycled content, rather than bio-content, is where most regulation has landed.
So the answer to whether bioplastics are expensive is yes, but the premium is falling, the range of materials is widening, and for a growing number of products the alternative is not a cheaper plastic but no market access at all. Choosing between a bioplastic, a recycled grade, and a conventional resin for a specific product, and finding a factory that can process it properly, since bioplastics run differently on moulding equipment, is part of what our plastics production package covers. The raw materials article explains the polymer families in more detail.
