Pillar III — Sugarcane (Brazilian Model) · Sovereign Bioeconomy Programme

5.1 · Strategic role

An already-approved SAF pathway, ready from day one.

The decisive feature of Pillar III is not novelty — sugarcane bioethanol is one of the oldest and most thoroughly proven liquid biofuel chains on the planet — but certainty. The Alcohol-to-Jet Synthetic Paraffinic Kerosene (ATJ-SPK) pathway is already approved under ASTM D7566 Annex A5, qualified for ethanol and isobutanol feedstocks, and is operating commercially today at LanzaJet's Soperton, Georgia facility (commissioned 2024). For Philippine ethanol, this means there is no certification waiting period, no first-of-a-kind ASTM risk, and no qualification dependency. A Philippine sugarcane molecule converted to ethanol and processed through ATJ-SPK can be sold internationally as ASTM-compliant, drop-in SAF tomorrow. Pillars I and II carry strong commercial cases and substantial strategic value, but their primary SAF pathways are still in qualification or in the process of broader adoption. Pillar III gives the Programme an immediately bankable SAF route that anchors its commercial credibility from day one.

5.2 · The Brazilian precedent

What the Programme keeps from Brazil — and how it improves on the method.

Brazil's Programa Nacional do Álcool (ProAlcool), launched in November 1975, established that an indigenous biological energy economy is feasible at national scale in a tropical agricultural country. Its outcomes include a flex-fuel vehicle fleet exceeding thirty million units, ethanol substitution of a substantial share of national gasoline demand, and bagasse cogeneration as a meaningful contributor to the Brazilian electricity grid. The ProAlcool experience yields four structural lessons that this Programme adopts in full:

National-scale liquid biofuels are feasible in a tropical agricultural economy with sugarcane as anchor crop, given sustained policy across multiple administrations.
The programme's first capital crisis is survived only if integrated downstream products exist beyond gasoline-substitution economics.
Sugarcane cogeneration is a structural revenue and carbon-credit pillar in its own right, not a minor co-product.
Producer-aggregation institutions (in Brazil, UÚNICA and the regional growers' cooperatives) are essential to managing volatility between sugar and ethanol uses of the same crop.

A respectful divergence on method

Brazil's chosen mechanism — ethanol blended directly into gasoline, with a national fleet of vehicles either modified or purpose-designed to combust ethanol-rich blends — required a substantial national investment in fleet adaptation and dual-distribution infrastructure, and it required sustained political commitment across multiple administrations to deliver. The Philippines, with the benefit of forty years of catalysis development since ProAlcool was launched, can preserve every structural lesson of the Brazilian programme without requiring a comparable engine-modification programme.

The Programme's pathway converts ethanol — via the Alcohol-to-Jet (ATJ-SPK) process and its parallel light-fraction isomerisation — into drop-in synthetic paraffinic hydrocarbons: jet-range, diesel-range, and gasoline-range fractions that are chemically identical in function to their fossil-derived counterparts and fully compatible with the existing Philippine vehicle and aircraft fleet. The gasoline fraction is isomerised to obtain octane through chain branching rather than through aromatic content, producing a high-octane drop-in motor gasoline that is essentially aromatic-free.

The practical effect. The country gets the structural benefits of an indigenous biological energy economy — indigenous feedstock, rural employment, foreign-exchange retention, climate alignment — without asking citizens to change what they put in their tanks. No fleet conversion. No flex-fuel infrastructure. No political mandate on consumers. The Brazilian lesson, with the cost of the Brazilian method removed.

5.3 · The Philippine sugarcane base

Negros, the Visayas, and the existing sugar institutional fabric.

The Republic has an established sugarcane sector centred on Negros Occidental — the historical sugar capital, accounting for the majority of national production — with significant additional capacity in Iloilo, Eastern Visayas, Bukidnon, Tarlac, and Batangas. The institutional infrastructure is already in place and has been operating for decades:

The Sugar Regulatory Administration (SRA) as the lead policy and pricing authority for the sugar sector.
The Philippine Sugar Millers Association as the producer-aggregation institution.
An integrated mill-distillery cluster including Roxol Bioenergy, San Carlos Bioenergy, and Absolut Distillers, each of which operates fuel-ethanol production for the existing E10 mandate.
The Republic's Biofuels Act (RA 9367), enacted 2006, which mandates a 10 % ethanol blend in gasoline (E10).

Domestic ethanol production has historically been insufficient to meet the existing E10 mandate, with Philippine refiners importing significant volumes of fuel ethanol from Brazil, the United States, and Thailand to close the gap — representing a foreign-exchange leak that the Programme is designed to capture. The Programme's Phase-1 ethanol target is therefore not a new market — it is closing the existing E10 mandate gap with domestic production. Expansion of dedicated bioenergy sugarcane cultivation, modernisation of sugar mills, and addition of integrated distillery and ATJ-SPK upgrading capacity addresses both the ethanol-mandate shortfall and the SAF opportunity simultaneously.

5.4 · Productivity

Indicative yields per hectare of cane.

Parameter	Indicative range	Notes
Cane yield (managed Philippine plantation)	60–100 t cane/ha/yr	SRA reporting; varies with region, irrigation, variety
Sucrose recovery	9–12 % of cane mass	Mill efficiency dependent
Ethanol yield (sugar route)	70–90 L EtOH / t cane	Direct-juice or molasses fermentation
Ethanol per hectare-year	~ 5,400–9,000 L/ha/yr	Among the highest of any feedstock globally
Bagasse output	~ 25–30 % of cane mass (50 % moisture)	Cogeneration feedstock
Bagasse cogeneration potential	~ 120–150 kWh / t cane	High-pressure boiler condensing-extraction set
Vinasse (distillery effluent)	~ 10–15 L / L ethanol	Anaerobic digestion to biomethane; nutrient recycling to cane fields
SAF from ethanol (ATJ-SPK)	~ 0.55–0.65 L SAF / L EtOH	LanzaJet ATJ-SPK process yield basis

5.5 · Sweet sorghum complement

A drought-tolerant biological hedge.

Sweet sorghum (Sorghum bicolor) is a complementary annual fermentable-sugar crop that the Sugar Regulatory Administration and the Department of Agriculture have already trialled in Philippine conditions. Sweet sorghum offers a shorter rotation (~ 4 months versus 12–18 months for cane), higher drought tolerance, and the ability to occupy marginal land that is unsuitable for sugarcane — particularly in dry-season cropping cycles in Negros Occidental, Iloilo, and Pangasinan. The Programme proposes to phase sweet sorghum into the ethanol feedstock pool as a deliberate biological-and-climatic hedge against sugarcane monoculture risk, leveraging the same fermentation and ATJ-SPK conversion infrastructure.

5.6 · Mill cluster integration

A mill is not a mill — it is an integrated bio-refinery.

A Brazilian-model sugar mill is not merely a sugar producer with an attached distillery; it is an integrated bio-refinery in which every co-product is a revenue stream. The Programme's mill-cluster design treats six distinct outputs simultaneously:

Sugar: conventional crystal sugar for the food market, marketed and priced through the Sugar Regulatory Administration's existing framework.
Bagasse: high-pressure cogeneration of process steam plus surplus electricity for the grid; supplies the on-site ATJ-SPK process heat and electricity, with surplus exported to the Visayas grid under existing renewable-energy and feed-in mechanisms.
Molasses or direct juice: fermented to hydrous ethanol (95 % v/v) using established Saccharomyces cerevisiae processes; dehydrated to anhydrous ethanol (99.9 % v/v) for blending and ATJ-SPK feedstock.
Vinasse: the high-COD distillery effluent is processed through anaerobic digestion to recover biomethane (joining Pillar I's biogas stream), with the digestate nutrient solution returned to cane fields as fertirrigation — closing the nitrogen, phosphorus, and potassium loop.
Filter cake: mill mud and filter-press residues returned to fields as soil amendment.
Biogenic CO₂: fermentation off-gas is high-purity biogenic CO₂, capturable for industrial gas markets, beverage CO₂, greenhouse agriculture, or eventual geological sequestration.

5.7 · The ATJ-SPK conversion step

From ethanol to drop-in jet, diesel, and gasoline — without aromatics.

The Alcohol-to-Jet Synthetic Paraffinic Kerosene (ATJ-SPK) process consists of four sequential catalytic steps:

Dehydration of ethanol to ethylene over an acidic alumina or zeolite catalyst at moderate temperature.
Oligomerisation of ethylene to mid-chain alpha-olefins (C₈–C₁₆) over a transition-metal or zeolite catalyst.
Hydrogenation of the olefins to produce paraffins.
Fractionation and isomerisation to recover the SAF (jet-range) cut and the gasoline-range and diesel-range co-products. The gasoline fraction is isomerised to introduce branched chains, raising octane through chain structure rather than aromatic content.

The pathway is qualified under ASTM D7566 Annex A5 for ethanol and isobutanol feedstocks, with permitted blend ratios up to 50 % by volume with conventional Jet A-1. Commercial deployment is established: LanzaJet (a spin-out from LanzaTech) commissioned the world's first dedicated commercial ethanol-to-SAF facility in Soperton, Georgia, USA in 2024, with additional projects in development in the United Kingdom, the United States, India, and Japan. The Programme proposes a deliberate licensor partnership with LanzaJet — or an equivalent ATJ-SPK technology provider — for the first Negros Occidental ATJ unit, leveraging the licensor's existing ASTM qualification dossier and operating experience.

The aromatic-free advantage. Synthetic paraffinic kerosene is, by chemistry, free of the aromatic hydrocarbons that drive soot, particulate, and contrail formation in conventional jet fuel. This is why ATJ-SPK output and FT-SPK output (Pillar II) and MTJ-SPK output (Pillar I) all share the same structural alignment with the EU's non-CO₂ aviation regulation (2024/2493) and with low-aromatic Jet A-1 product specifications. The Programme's three-pillar architecture is, at the molecular level, a single-product architecture: three feedstock routes converging on synthetic paraffinic drop-in fuels.

5.8 · Sustainability & the food-versus-fuel question

A direct, quantified answer.

Any large-scale sugarcane bioenergy expansion must address the food-versus-fuel question explicitly and quantitatively. The Programme's design principles — codified in this concept paper and to be carried into the Programme's Environmental and Social Management Framework — are as follows:

Expansion of bioenergy sugarcane occurs on degraded, abandoned, or under-utilised agricultural land, not on land currently producing food crops. Site selection follows a land-use suitability analysis conducted with the Department of Agriculture and the Land Bank of the Philippines.
The Programme protects the existing sugar-for-food market through coordination with the Sugar Regulatory Administration. Bioenergy expansion is additive, not substitutive, to existing sugar production.
Sweet sorghum and dedicated bioenergy cane varieties (high-fibre, low-sucrose cultivars optimised for ethanol and bagasse rather than crystal sugar) are deployed where they reduce competition with food-grade sugar.
Smallholder participation is built into the model through cooperative cultivation contracts with 'block' farmers, building on the existing Republic Act 10659 (Sugarcane Industry Development Act) framework.
Lifecycle GHG accounting includes direct and indirect land-use change effects, conducted to ICAO CORSIA methodology standards.