Renewable Energy Grid Integration and Transmission Expansion
Theme: Electricity infrastructure
Assessment
Responsible: Eskom / NTCSA / NERSA / Department of Mineral Resources and Energy
Feasibility Assessment
Progress: NTCSA licensed (2025), separating transmission governance from EskomEskom: South Africa's national electricity utility and dominant power producer, transmitter, and distributor. Eskom's debt crisis and maintenance failures have been a primary cause of load shedding and a binding constraint on economic growth.. BW7 awarded 3,940 MW to be integrated into the grid by 2027–2028. Grid Connection Code update underway. Battery Storage Programme Round 1 in procurement phase. Key bottleneck: NERSANERSA — National Energy Regulator of South Africa: The regulatory authority for the electricity, piped-gas, and petroleum pipelines industries in South Africa. NERSA approves Eskom's tariff applications and licenses new electricity generators. approval timelines for transmission infrastructure (2–4 years) lag investment requirements. The Transmission Development Plan 2025–2034 requires an estimated R440 billion — partially addressed by Eskom debt relief conditionality and NTCSA capitalisation roadmap.
Stakeholder Landscape
Who backs this reform, who needs convincing, and which interests or red lines shape political feasibility.
Backers
18
2 stakeholders
Negotiation weight
22
3 conditional actors
Opposition weight
0
0 opposing actors
Review coverage
0/5
All mapped stance notes are still draft
Provenance warning
Every mapped stakeholder stance for this idea is still draft. The coalition score is directional only until at least the high-influence actors are reviewed.
Coalition Read
Anchor: Presidency / Operation Vulindlela. Highest-leverage swing actor: Eskom.
Political Tractability
No reviewed signals · 0% of mapped influence has been reviewed.
Grid expansion and renewable integration are critical to ending load-shedding, the Presidency's top economic priority.
Interest: Cross-cutting structural reform coordination across energy, logistics, water, digital infrastructure, and visa reform. Operation Vulindlela, establish…
Concern: Implementation bottlenecks within line departments; regulatory capture of NERSA and ICASA; SOE institutional inertia; ensuring quick wins translate in…
Engagement path: Already fully engaged. Seeks line department buy-in, NEDLAC social compact legitimacy, and international DFI financing alignment on key reform milesto…
Grid expansion is essential for BUSA members investing in self-generation who need reliable transmission access.
Interest: Cross-sector structural reform across energy security, logistics efficiency, regulatory certainty, labour market flexibility, and digital infrastructu…
Concern: Slow implementation pace relative to policy announcements; inconsistency between reform rhetoric and regulatory decisions (e.g. NERSA tariff approvals…
Engagement path: Already actively engaged. Seeks implementation accountability mechanisms with published milestones, predictable regulatory timelines, and NEDLAC outco…
Eskom supports grid expansion but requires sufficient capitalisation of the transmission entity to manage high-renewables integration.
Interest: Managing R400bn+ debt restructuring with government support; maintaining grid stability during the unbundling transition; preserving technical and ins…
Concern: Unbundling of the distribution arm (EDI) could fragment operational coherence and create regulatory gaps; transmission entity capitalisation requires…
Engagement path: Credible debt restructuring plan with government guarantees; adequate transition period for unbundling with clear milestones; grid investment ring-fen…
NUM conditionally supports renewable grid integration if coal community economic diversification plans are co-developed with measurable milestones.
Interest: Mining employment security and worker safety; just transition pace that protects coal-dependent community livelihoods; collective bargaining rights in…
Concern: Accelerated coal phase-out without adequate income support, skills retraining, and community economic diversification; renewable energy job quality —…
Engagement path: Just transition fund with dedicated skills retraining and income support; coal community economic diversification plans with government commitments an…
NERSA supports grid integration but requires adequate regulatory capacity to oversee an expanded multi-player transmission system.
Interest: Statutory mandate as National Energy Regulator: licensing, tariff regulation for electricity, gas, and petroleum pipelines; consumer price protection…
Concern: Reform proposals that bypass NERSA licensing (e.g. registration-only frameworks for embedded generation) reduce statutory jurisdiction and create regu…
Engagement path: Regulatory reform must strengthen rather than hollow out NERSA's capacity; adequate resources and staff to handle an expanded regulatory workload unde…
Description
South Africa's transmission grid — operated by NTCSA under Eskom's legacy infrastructure — is severely constrained, with over 5 GW of renewable energy projects unable to connect due to grid capacity limitations in the Northern and Western Cape. The Transmission Development Plan (TDP) identifies an estimated R440 billion in required grid investment over the next decade. This reform covers accelerated TDP implementation, fast-tracked grid connection approvals, battery storage integration standards, and regulatory clarity for embedded generation curtailment. NERSA's network tariff framework and the Electricity Distribution Industry's fragmented structure compound the challenge at the distribution level. Without grid expansion, the IRP's renewable procurement targets are unachievable. As of early 2026, NTCSA is partially ring-fenced within Eskom, awaiting full legal separation and independent capitalisation.
Referenced in OECD Economic Surveys: South Africa
OECD SA Survey (2017, 2020, 2022, 2025). The 2025 survey calls for boosting public investment especially in electricity, water and rail.
South Africa needs 14,000 km of new transmission lines by 2030 to integrate committed renewable capacity—a capital programme larger than Medupi and Kusile combined. — NTCSA Transmission Development Plan, 2024
Implementation Roadmap
South Africa has allocated over 12,000 MW of renewable energy through REIPPPP Rounds 1–6 and emergency procurement, but grid connection constraints, queue management failures, and transmission infrastructure gaps are blocking connection of allocated and planned capacity. The Just Energy Transition Investment Plan — with R131 billion in international commitments from the UK, EU, USA, France, and Germany — designates transmission expansion as a priority investment. The National Transmission Company of South Africa (NTCSA) under the ERA Amendment Act (2024) assumes responsibility for transmission planning; NERSA must update the Grid Code; and NTCSA must clear a 6,000+ MW connection application backlog. Transmission expansion is the binding constraint on the energy transition, with success measured by MW of renewable capacity successfully connected per year.
Publish the NTCSA Transmission Development Plan: 10-year infrastructure investment plan identifying priority transmission corridors for renewable energy zones (Northern Cape, Western Cape wind corridors, Eastern Cape), voltage upgrades, and new substations; budget R130–180 billion over 10 years
Implement grid connection queue reform: NERSA and NTCSA publish a transparent queue management framework with first-come-first-served processing, queue position expiry for projects without financial close, and a published connection timeline commitment per application
Fast-track 7 priority transmission projects from the TDP: Northern Cape HVDC corridor (Pofadder–Poseidon), Cape Peninsula grid reinforcement, Eastern Cape wind corridor upgrades, and Mpumalanga HVDC interconnects; obtain NERSA approval and commence procurement
International Comparisons
View all →Kenya expanded geothermal capacity from 45 MW (2000) to 878 MW (2023) — now 47% of installed capacity — through KenGen's Olkaria complex. The key innovation: a state-owned drilling company bore exploration risk (the highest-cost phase), with private developers entering only after wells were proven. Generation cost fell from USD 0.10 to USD 0.05/kWh. SA's geothermal potential is limited, but Kenya's public-bears-risk/private-operates model applies to any capital-intensive energy infrastructure such as battery storage or new transmission.
Approach
Kenya split the geothermal value chain at the point where the risk sits. Public entities — the state generator and later a dedicated state drilling company — carried out surface exploration and drilled the wells, the phase where capital is sunk before anyone knows whether there is a resource. Proven steam was then sold on, or the wellfield handed to developers who financed only the generation plant — an ordinary project-finance proposition. Concessional and donor funding covered the exploration phase, the state utility contracted the output under long-term agreements, and public transmission was extended to the fields ahead of the private plant.
Timeline: Sustained public drilling from the early 2000s; a dedicated state drilling entity separated out from 2008; capacity built over two decades
Lessons for South Africa
SA's geothermal potential is negligible, but the structure travels to the part of the grid problem no private party will fund. The Transmission Development Plan's R440 billion of network build is exactly the kind of sunk, pre-revenue capital Kenya put on the public balance sheet so private capital could enter at the bankable stage. Read that way, NTCSA's job is not to compete for capital with generators but to absorb the risks they cannot price — transmission capacity in the Cape, and plausibly first-of-a-kind battery storage — and then sell connection and balancing as a contracted service.
Evidence & Research
Research corpus →- Unlocking sustainable and inclusive growth in South Africa: Advancing the electricity reform agenda
ERSA · Dec 2025
The paper directly addresses electricity reform, renewable energy deployment acceleration, and grid/distribution system challenges (municipal structures) as mechanisms for resolving South Africa's energy security constraint and enabling the renewable transition that the policy idea depends on.
- Faster than you think: Renewable energy and developing countries
SA-TIED
The paper directly addresses systems integration challenges of variable renewable energy penetration and institutional organization of power systems — the core mechanism the policy idea targets through grid expansion, connection standards, and regulatory frameworks.
Links proposed by lexical matching and screened by a calibrated research judge. Follow the paper for the full argument and its caveats.
Parliamentary record
4 meetingsCommittee sittings this reform was drawn from, most recent first. Each row opens the meeting on this site; the PMG link goes to the source record.
Energy
4 December 2024Update by Eskom on its performance to date in 2024; briefing by the National Transmission Company of SA on the Transmission Development Plan; with Deputy Minister
Mineral Resources
20 September 2023UPRD Bill: adoption; Committee programme
Mineral Resources
12 September 2023UPRD Bill: proposed amendments finalised
How to cite
Wilse-Samson, L. (2026). Renewable Energy Grid Integration and Transmission Expansion. SA Policy Space. Retrieved 24 August 2026, from https://sa-policy-space.vercel.app/ideas/renewable-energy-grid-integration-and-transmission-expansion?snapshot=2026-08-24
Status History
tracked since Mar 2026- Recorded as Under review when status tracking began — held since at least Mar 2026.Mar 2026
Data as of 2026-08-24 · latest PMG meeting 2026-08-21