Solar Energy for Animal Feed Mills in Thailand

Thailand has over 930 feed mill companies producing 20-22 million tons annually, a $7.2 billion market (approximately ฿250 billion) — the 3rd largest in Asia after China and India. Major players include CP Foods (Charoen Pokphand) with 180+ facilities across Thailand and neighboring countries, Betagro Group with full farm-to-feed supply chain integration, Cargill Thailand as the largest US-based producer, and Thai Foods Group with rapid growth in the swine sector.

Energy costs represent 10-18% of feed production costs (excluding raw materials), higher than most manufacturing sectors because grinding and pelleting require large motors running continuously. Electricity is the largest controllable cost where solar delivers immediate savings — especially as electricity prices trend upward following natural gas costs.

Grinding/pelleting (35-45%): the mill heart — hammer mills crush raw materials (corn, soybean meal, fish meal) to fine particles before mixing, followed by pellet mills using die+roller systems to compress feed into pellets at 70-90°C under pressure. Hammer mill motors 75-250 kW each, pellet mills 150-500 kW each, running 2-3 shifts/day. Peak demand coincides with maximum solar generation.

Mixing (15-20%): ribbon or paddle mixers at 2-6 tons/batch blend 10-20 raw materials uniformly using 30-75 kW motors. Each batch cycles 3-5 minutes but mixers run continuously throughout shifts. Premix systems for vitamins and minerals add another 10-20 kW.

Drying/cooling (15-20%): post-pelleting, hot pellets at 70-90°C pass through counter-flow or fluid bed coolers to reduce temperature within 5°C of ambient and moisture to ≤12% to prevent mold and Aflatoxin. Large fans at 15-50 kW run continuously throughout the production line.

Boiler auxiliary (5-10%): large feed mills use steam boilers for conditioning (moisture addition before pelleting) and extrusion for aquatic feed. Boilers burn fuel (biomass/gas), but auxiliary systems (water pumps, fans, economizers) consume 20-80 kW of electricity whenever the boiler operates.

Most feed mills run 2-3 shifts/day, but the daytime shift (07:00-18:00) carries peak load because of raw material intake (corn and soybean truck deliveries), new grinding lots, full-capacity pelleting, and bagging/loading for dispatch. This aligns perfectly with peak solar generation. Feed mill self-consumption rates reach 80-95% (very high) because daytime loads exceed panel supply.

Feed mill advantage: raw material silo buildings and product warehouses typically have large, flat metal roofs of 5,000-30,000 sqm — ideal for solar installation. No obstructions, and panel weight of 12-15 kg/sqm is less than the rain load the roof is designed to handle, requiring no structural reinforcement.

CP Foods (Charoen Pokphand Foods) has committed to Carbon Neutral by 2030 and Net Zero by 2050, with rooftop solar as a core strategy. CP has installed 65 MW across 180+ facilities nationwide, covering feed mills, meat processing plants, and farms — reducing carbon emissions by over 50,000 tons CO₂ annually.

Cargill Thailand follows a global renewable energy policy deploying solar across feed mills worldwide, including Saraburi and Chonburi plants. Thai Foods Group is evaluating solar for its swine feed mills in Korat — the trend is clear that feed producers of all sizes are shifting to solar.

BOI Category A1 (agriculture and food products) provides 5-8 year CIT exemption, import duty exemption for machinery (including solar panels and inverters), and additional tax deductions under Royal Decree 805 for renewable energy investment. BOI-promoted feed mills can double-deduct solar costs, shortening effective payback by 1-2 years.

Feed mills range from small independent operations to vertically integrated CP-scale plants producing millions of tons annually. CapSolar designs systems across 3 tiers.

* Estimates by CapSolar based on PEA industrial tariff ฿4.2-4.5/kWh, irradiance 1,500-1,650 kWh/kWp/yr, PR 80-82%.

Thailand exports feed to over 30 countries, with key customers in Vietnam, Cambodia, Myanmar, Laos, Philippines, and Japan. As the 'ASEAN Feed Hub,' Thailand serves as the regional production center for both finished feed and premix/additives. Factories with solar achieve lower carbon footprint per ton than competitors (Indonesia, Philippines), gaining advantages in global buyer contract bidding.

CapSolar offers both EPC (direct purchase) and PPA (zero upfront investment) for feed mills — PPA suits independent mills wanting immediate savings without CAPEX, while EPC is ideal for large groups (CP/Betagro scale) with investment budgets requiring I-REC certificates for ESG reporting.

Top locations: feed mills cluster in Nakhon Ratchasima (Korat), Saraburi, Chonburi, Lopburi, Suphanburi, and Ratchaburi — all PEA zones with ฿4.2-4.8/kWh industrial tariffs. Average roof area of 8,000-25,000 sqm per mill supports 500 kWp-3 MWp per site.