From Marginal Land to Baseload Power: How OPUS Cactus Is Turning Cactus into Energy

South Africa’s energy crisis has forced government, investors, corporates and policymakers to look beyond traditional solutions for reliable, low-carbon baseload power. While wind, solar and liquefied natural gas (LNG) dominate the conversation, a less obvious contender is emerging from the country’s semi-arid interior: biogas produced from cactus grown on marginal land.

OPUS Cactus, a biotech company operating between South Africa and the Netherlands, demonstrates that the drought-tolerant spineless Opuntia cactus can unlock decentralised baseload energy in regions long considered uneconomical — while simultaneously creating agricultural, food and carbon value. If the model scales as planned, it could reshape how energy, land use and rural development intersect in South Africa.

At a time when the country is grappling with grid instability, constrained infrastructure and rising energy costs, OPUS Cactus is positioning itself not as a speculative climate-tech startup, but as a long-horizon infrastructure and bio-economy play grounded in physical assets and on-the-ground proof.