Net zero means balancing the amount of greenhouse gases emitted with the amount removed from the atmosphere, so that the net addition to the atmosphere is zero. Renewable energy plays a central role in reaching that balance by replacing fossil fuels with clean energy sources that produce little to no carbon emissions. For industrial companies, this shift is both urgent and complex, but the path forward is becoming clearer.
Fossil fuel dependency is locking industrial companies out of net zero
Industry accounts for 37% of total global energy consumption, and roughly two-thirds of that goes toward generating heat. Around 80% of that heat still comes from burning fossil fuels. For sustainability managers, this is not an abstract statistic. It shows up in Scope 1 emissions reports, in ETS compliance costs, and in boardroom conversations about net-zero commitments that feel increasingly distant. The core problem is that many industrial processes require high-temperature heat that electricity alone cannot easily or affordably deliver. The solution is not to abandon ambition but to find clean energy technologies that match the thermal demands of real industrial operations without requiring a complete infrastructure overhaul.
Waiting for the perfect clean energy solution is a strategy that costs you time and credibility
Many companies are holding out for full electrification or green hydrogen at scale, but both options face real constraints right now. Grid capacity is limited in many industrial regions, and green hydrogen infrastructure is still maturing. Meanwhile, regulatory pressure through frameworks such as the EU Emissions Trading System continues to intensify, and customers are increasingly scrutinising the emissions profiles of their suppliers. Waiting is not a neutral position. The practical move is to evaluate clean energy technologies that are commercially available today, integrate with existing boiler infrastructure, and deliver measurable Scope 1 reductions without requiring a complete rebuild of operations.
What is net zero and why does it matter for industry?
Net zero is the point at which an organisation or economy emits no more greenhouse gases than it removes. For industry, it matters because manufacturing, chemical processing, food production, and other energy-intensive sectors are among the largest sources of global emissions, and regulatory frameworks, investor expectations, and customer demands are all pushing companies to act.
Reaching net zero in an industrial context requires addressing Scope 1 emissions directly. These are the emissions that come from burning fuel on-site, and they are the hardest to eliminate because they are tied to core production processes. Decarbonising heat is the central challenge here, and it is one that cannot be solved through carbon offsetting alone.
The urgency is real. The EU Emissions Trading System puts a price on carbon, and that price is expected to rise. Companies that delay action face growing financial exposure, while those that move early gain a competitive advantage, protect margins, and build credibility with stakeholders who are paying close attention to climate commitments.
How does renewable energy help achieve net zero?
Renewable energy helps achieve net zero by replacing fossil fuel combustion with energy sources that produce zero or near-zero carbon emissions. When a company switches from natural gas to a renewable energy source for heat or power, it directly reduces the greenhouse gases released into the atmosphere from its operations.
Renewable energy contributes to net zero on two levels. First, it eliminates emissions at the source. Instead of burning fossil fuels and then trying to offset the resulting CO₂, renewable energy simply does not produce that CO₂ in the first place. Second, when renewable energy is used to produce clean fuels, such as by using green electricity to generate hydrogen, it creates a low-carbon supply chain that extends decarbonisation further upstream.
For industrial heat specifically, the challenge is finding renewable energy sources that can deliver the high temperatures that manufacturing processes require. Not all renewable technologies are suited to this. Solar and wind generate electricity efficiently, but converting that electricity into high-temperature heat involves losses. Technologies designed specifically for industrial heat applications, where clean combustion can reach temperatures of up to 2,000°C, offer a more direct route to decarbonising the hardest parts of the energy system.
What are the biggest challenges to reaching net zero in industry?
The biggest challenges to reaching net zero in industry are the high cost of switching from fossil fuels, the technical difficulty of replacing high-temperature heat, and the limited availability of clean energy infrastructure in many industrial locations. These three barriers interact and reinforce each other, making the transition genuinely difficult.
Cost remains the most cited obstacle. Clean energy carriers often carry a price premium over natural gas or coal, and for energy-intensive industries operating on thin margins, that difference is hard to absorb without a clear return on investment. Upfront capital costs for new equipment add further pressure.
Infrastructure is the second major constraint. Many industrial sites are not connected to sufficient grid capacity for full electrification, and hydrogen pipelines are not yet widely available. Technologies that can work within existing site infrastructure, using current boiler setups and fuel logistics systems, have a significant practical advantage.
Technical compatibility is the third challenge. Many industrial processes require heat at temperatures that conventional renewable electricity cannot easily reach. Finding clean energy solutions that match these thermal requirements without compromising product quality or process efficiency is a prerequisite for any viable transition plan.
What’s the difference between net zero and carbon neutral?
Net zero and carbon neutral are related but not identical. Carbon neutral means that the carbon emissions from an activity are balanced by an equivalent amount of carbon removal, often through offsets. Net zero goes further, requiring a deep reduction in actual emissions across the full value chain, with offsets used only for residual emissions that cannot be eliminated.
The distinction matters in practice. A company can claim carbon neutrality while still burning large amounts of fossil fuels, as long as it purchases enough carbon credits to offset those emissions. Net zero, by contrast, requires fundamentally changing how energy is produced and used. Offsets are a last resort, not a primary strategy.
For sustainability managers, this difference has direct implications for how decarbonisation plans are structured and communicated. Investors, customers, and regulators are increasingly familiar with the gap between these two terms, and claims of carbon neutrality backed primarily by offsets are facing growing scrutiny. Building a credible net-zero pathway means prioritising actual emission reductions, particularly in Scope 1, where industrial heat sits.
Which clean energy technologies can decarbonise industrial heat?
Several clean energy technologies can decarbonise industrial heat, including electric boilers, green hydrogen combustion, biomass, and iron fuel technology. Each has different temperature capabilities, infrastructure requirements, and cost profiles, so the right choice depends on the specific needs of the industrial process.
Here is how the main options compare:
- Electric boilers work well for lower-temperature applications but require significant grid capacity and face limitations in reaching the very high temperatures needed for some industrial processes.
- Green hydrogen combustion can reach high temperatures and produces no CO₂, but depends on hydrogen infrastructure that is still being built out in most regions.
- Biomass reduces fossil fuel use but raises questions around land use, supply chain emissions, and long-term sustainability depending on the source.
- Iron fuel technology burns iron powder to generate high-temperature heat with zero direct CO₂ emissions. The only combustion byproduct is iron oxide, which can be regenerated back into iron fuel using hydrogen, creating a closed, circular cycle.
For industries that need high-temperature heat and cannot wait for hydrogen infrastructure to mature, iron fuel technology offers a commercially available alternative that works alongside existing boiler systems rather than replacing them entirely.
How can industrial companies start their net zero journey?
Industrial companies can start their net zero journey by mapping their current emissions, identifying their largest Scope 1 sources, and evaluating which clean energy technologies are technically and commercially viable for their specific operations. The goal is to take a first concrete step rather than waiting for a perfect solution.
A practical starting sequence looks like this:
- Audit your energy use and emissions profile. Understand where your heat comes from, what temperatures your processes require, and what your current Scope 1 baseline looks like.
- Identify which processes are ready to transition. Not every part of your operation needs to change at once. Start with the processes for which clean alternatives are most viable today.
- Evaluate technology options against your site constraints. Consider grid capacity, infrastructure availability, and whether a solution can integrate with your existing equipment.
- Build the internal business case. Quantify the carbon reduction, estimate the cost delta versus fossil fuels, and model the regulatory risk of staying on the current path.
- Engage with suppliers and technology partners early. Understanding fuel supply agreements, delivery logistics, and long-term pricing is essential before committing to a technology.
The companies making the most progress are not those with the most ambitious targets on paper. They are the ones that have moved from planning to piloting, testing clean energy technologies in real operating conditions and building the operational knowledge to scale.
How RIFT helps industrial companies decarbonise their heat
We develop and supply Iron Fuel Technology, a circular clean energy solution built specifically for industrial heat. Here is what that means in practice for companies working toward net zero:
- Zero direct CO₂ emissions from combustion, with ultra-low NOₓ output
- Up to 95% energy efficiency, outperforming many fossil fuel boiler systems
- Drop-in compatibility with existing boiler infrastructure, so no full site overhaul is needed
- A circular fuel cycle: iron powder burns to iron oxide, which is regenerated back into iron fuel using hydrogen, closing the loop
- Long-term fuel supply agreements that give operations teams the reliability they need to plan ahead
Our Iron Fuel Boiler is already in commercial deployment, with the first contract signed alongside Kingspan Unidek. If you are evaluating clean energy options for your industrial operations and want to understand whether iron fuel is a fit for your site, get in touch with our team and we will walk you through the specifics.