Investing in renewable energy is no longer just an environmental decision—it's a strategic financial investment. For South African businesses looking to reduce electricity costs, improve energy security, and strengthen sustainability performance, Section 12B of the Income Tax Act provides a valuable tax incentive that can significantly improve project returns.
Section 12B allows businesses to claim accelerated tax deductions on qualifying renewable energy assets used in the generation of electricity. The incentive is designed to encourage investment in renewable energy technologies such as solar photovoltaic (PV), wind, hydropower, biomass, and certain concentrated solar power systems.
What is Section 12B?
Section 12B provides an accelerated capital allowance for qualifying renewable energy assets used in a trade. Rather than depreciating these assets over many years, businesses can claim deductions over a shortened period, improving cash flow and reducing taxable income.
The incentive remains available to businesses in 2026 following the expiry of the temporary Section 12BA enhanced incentive on 28 February 2025. Businesses investing in renewable energy projects can still access substantial tax benefits under the permanent Section 12B framework.
Which Technologies Qualify?
Qualifying renewable energy technologies include:
- Solar photovoltaic (PV) systems
- Wind turbines
- Hydropower systems
- Biomass energy systems
- Landfill gas projects
- Concentrated solar power (CSP) systems
- Supporting structures and foundations directly associated with qualifying generation assets
Examples of eligible project components may include solar panels, inverters, mounting structures, electrical infrastructure, foundations and support structures, and grid connection equipment associated with the renewable energy system.
Current Section 12B Deduction Structure
For solar PV systems up to 1 MW, businesses may qualify for a 100% deduction in the first year the system is brought into operation. Larger renewable energy projects generally qualify for accelerated depreciation allowances over multiple years.
How the Section 12B Claim Process Works
Step 1: Conduct an Energy Assessment
Before investing in renewable energy infrastructure, businesses should conduct an energy assessment to determine energy consumption patterns, load profiles, solar, wind, or hybrid energy opportunities, expected financial returns, and system sizing requirements.
Step 2: Design and Install the System
The renewable energy system must be installed and commissioned for productive business use.
Step 3: Obtain Supporting Documentation
Maintain records including supplier quotations, invoices, asset registers, commissioning certificates, and technical specifications.
Step 4: Submit Through Normal Tax Processes
The deduction is claimed as part of the business's annual tax return and should be supported by adequate documentation should SARS request verification.
Example: Solar PV Installation
A manufacturing facility installs a solar PV system costing R2 million.
If the installation qualifies for a 100% first-year deduction, the company may deduct the full R2 million against taxable income in the year the system is brought into use. The actual tax benefit will depend on the company's applicable tax rate and financial position.
In many cases, businesses can pursue both renewable energy and energy efficiency initiatives as part of a broader sustainability strategy.
How Green Reconstructors Can Help
At Green Reconstructors, we help businesses identify renewable energy opportunities through:
- Energy Assessments
- Energy Audits
- Resource Efficiency and Cleaner Production (RECP) Assessments
- Energy Management Systems (ISO 50001)
- Renewable Energy Feasibility Studies
- Funding Facilitation
- Sustainability and ESG Strategy Development
Our approach ensures renewable energy investments are aligned with operational requirements, financial returns, carbon reduction objectives, and available tax incentives.
References
- National Treasury of South Africa. Income Tax Act No. 58 of 1962: Section 12B – Deduction in Respect of Certain Machinery, Plant, Implements, Utensils and Articles Used in Renewable Energy Generation.
- South African Revenue Service (SARS). Guide to Capital Allowances and Renewable Energy Tax Incentives.
- National Treasury of South Africa. Taxation Laws Amendment Acts Relating to Renewable Energy Incentives and Accelerated Depreciation Allowances.
- South African Institute of Taxation (SAIT). Overview of Section 12B Renewable Energy Tax Incentives.