In 2010, building a utility-scale solar farm cost $4.70 per watt of capacity. The electricity it produced cost $0.381 per kilowatt-hour — roughly eight times more expensive than coal-fired power. Solar was a niche technology, dependent on government subsidies, deployed primarily in wealthy European countries pursuing climate targets. Serious energy analysts debated whether solar would ever be cost-competitive with fossil fuels. The International Energy Agency's 2010 World Energy Outlook projected that solar would generate 0.9% of global electricity by 2025.
They were off by a factor of ten. In 2025, solar generated over 9% of global electricity. The installed cost dropped to $0.44 per watt — a 90% reduction. Utility-scale solar in the best locations now produces electricity at $0.02 per kilowatt-hour, making it the cheapest electricity ever generated by any technology in human history. Total global renewable energy capacity additions reached 580 GW in 2025. Renewables now generate 34% of global electricity. In 85% of the world's countries by GDP, building new solar or wind is cheaper than building new coal or gas — and in a growing number of markets, it is cheaper to build new renewables than to continue operating existing fossil fuel plants.
This is the tipping point. Not a prediction, not a scenario — a measurable structural shift in the economics of energy. The transition from fossil fuels to renewables is no longer driven primarily by climate policy or environmental concerns. It is driven by cost. Solar and wind are winning on price in open markets against incumbent technologies that have had over a century of infrastructure advantage. The implications for businesses, investors, and entire economies are profound and immediate. This guide examines the current state of renewable energy in 2026, the technology breakthroughs accelerating the transition, the specific mechanisms businesses use to procure renewable energy, and the challenges that remain.
Related reading:
Renewable Energy for Homeowners: Solar, Wind, and Beyond in 2026 |
Distributed Renewable Energy: Localized Power Creation for the Future |
Marine Renewable Energy: Harnessing the Ocean's Power
The Numbers: Where Renewable Energy Stands in 2026
The global energy landscape has shifted more in the past five years than in the previous twenty. The numbers tell the story clearly.
Capacity: Total global renewable power capacity reached 4,300 GW at the end of 2025, up from 2,800 GW in 2020 and 1,200 GW in 2010. Solar PV alone reached 2,000 GW of installed capacity. Wind power (onshore and offshore combined) reached 1,100 GW. Hydropower, the oldest renewable source, provides approximately 1,200 GW. Annual capacity additions have accelerated from 295 GW in 2021 to 580 GW in 2025 — roughly equal to adding the entire electricity generating capacity of France every year.
Generation share: Renewables generated 34% of global electricity in 2025, up from 28% in 2020 and 22% in 2015. Solar and wind alone provided 17% — up from just 5% in 2015. In some countries, the share is far higher: Denmark generated 84% of its electricity from wind and solar, Portugal reached 72%, Uruguay reached 98% (including hydro), and even large economies like Germany (52%) and the UK (48%) are approaching majority-renewable electricity.
Investment: Global investment in renewable energy reached $620 billion in 2025, exceeding investment in fossil fuel supply ($540 billion) for the fifth consecutive year. Of the total, $310 billion went to solar PV, $180 billion to wind, and $65 billion to battery storage. China accounted for 45% of global renewable investment. The United States, boosted by Inflation Reduction Act incentives, invested $110 billion.
Jobs: The renewable energy sector employed 16.2 million people globally in 2025, up from 12.7 million in 2021 and 7.3 million in 2012. Solar PV is the largest employer with 5.8 million jobs. The sector is growing jobs faster than any other energy segment and is increasingly a driver of rural economic development, particularly in regions transitioning away from coal.
The Cost Revolution: Why This Time Is Different
Previous energy transitions — wood to coal, coal to oil — took 50-100 years. The renewable transition is moving faster because of a fundamental mechanism that fossil fuels lack: learning curves. Every time cumulative production of solar panels doubles, costs fall by approximately 24%. This is Wright's Law, and it has held for solar technology since 1976 across ten doublings of cumulative production. No fossil fuel technology has ever exhibited sustained learning curves of this magnitude.
Solar PV costs: Utility-scale solar LCOE fell from $0.381/kWh in 2010 to $0.036/kWh globally in 2025 (IRENA weighted average). In the best locations, auction prices have dipped below $0.015/kWh — Saudi Arabia's 1.5 GW Sudair project signed at $0.0124/kWh in 2024. Module prices fell to $0.08-0.10/W in 2025, driven by massive manufacturing overcapacity in China (which produced 80% of global solar cells). At these prices, the fuel (sunlight) is free, and the capital cost is falling toward levels where solar competes not just with new fossil fuel plants but with the marginal operating cost of existing ones.
Wind costs: Onshore wind LCOE dropped 70% since 2010, reaching $0.033/kWh globally in 2025. Offshore wind costs fell even faster — from $0.188/kWh to $0.071/kWh — driven by larger turbines (Vestas and Siemens Gamesa now produce 15+ MW units), floating foundation technology expanding available sites, and supply chain maturation. The UK's latest offshore wind auction cleared at GBP 47/MWh — below the wholesale electricity price.
Battery storage: Lithium-ion battery pack prices fell from $1,200/kWh in 2010 to $78/kWh in 2025 (BloombergNEF). LFP chemistry, which avoids cobalt and nickel, reached $55/kWh at the cell level. This cost reduction crossed a critical threshold: grid-scale battery storage is now economically viable without subsidies in most major markets. Total installed battery storage capacity reached 150 GW / 450 GWh globally in 2025, up from just 27 GW in 2021.
Get Smarter About Business & Sustainability
Join 10,000+ leaders reading Disruptors Digest. Free insights every week.
Battery Storage: Solving the Intermittency Problem
The most persistent criticism of solar and wind — "the sun doesn't always shine and the wind doesn't always blow" — is being addressed by rapid advances in energy storage. While the intermittency challenge is real, the solutions are further along than most business leaders realize.
Short-duration storage (2-4 hours): Lithium-ion batteries dominate this segment and are already deployed at scale. California's grid operates over 10 GW of battery storage, routinely shifting solar generation from midday to evening peak demand. Australia's Hornsdale Power Reserve (the "Tesla Big Battery") demonstrated in its first years of operation that batteries can stabilize grids more effectively than conventional gas-fired peaker plants, while reducing costs for consumers.
Medium-duration storage (4-12 hours): Iron-air batteries, pioneered by Form Energy, offer a step change. Form Energy's iron-air cells use rust and iron reversibly — essentially breathing in oxygen to discharge (rusting the iron) and reversing the process to charge (de-rusting). The materials are abundant and cheap. Form Energy projects costs of $20-30/kWh at scale — less than half the cost of lithium-ion. Their first commercial deployment, a 10 MW / 100 MWh system with Great River Energy in Minnesota, came online in 2025.
Long-duration storage (days to weeks): For multi-day storage needs — bridging extended periods of low renewable generation — several technologies are approaching commercial viability. Compressed air energy storage (Hydrostor is building a 500 MW facility in California), gravity-based storage (Energy Vault uses crane-lifted concrete blocks), pumped hydro (still the largest form of storage globally at 160 GW), and green hydrogen (produced via electrolysis from renewable electricity) each address different duration and scale requirements.
The practical implication for businesses: energy storage is transitioning from an expensive add-on to renewable projects into an integrated component that actually improves the economics. Pairing solar with 4-hour battery storage now produces dispatchable power (available when needed, not just when the sun shines) at costs competitive with or below natural gas peaker plants in most US markets.
How Businesses Procure Renewable Energy: PPAs, RECs, and On-Site Solar
For businesses, the renewable energy transition is not abstract — it involves specific procurement mechanisms with distinct financial profiles, risk characteristics, and sustainability reporting implications. Understanding these mechanisms is essential for making informed decisions.
Power Purchase Agreements (PPAs): Corporate PPAs are long-term contracts (typically 10-25 years) between a company and a renewable energy developer. The developer builds and operates a solar or wind facility; the company agrees to buy the electricity at a fixed or slightly escalating price. In 2025, corporations globally signed PPAs for over 48 GW of new capacity — led by technology companies (Google: 7.8 GW, Amazon: 6.2 GW, Microsoft: 5.1 GW, Meta: 4.3 GW) but increasingly adopted by manufacturers, retailers, and financial institutions.
PPAs come in two main structures. Physical PPAs deliver electricity directly to the buyer's facilities or to the grid on their behalf. Virtual PPAs (VPPAs) are financial contracts — the developer sells electricity on the open market, and the buyer pays or receives the difference between the contract price and the market price. VPPAs are more flexible (they do not require the project to be in the same grid region as the buyer) but carry basis risk (the difference between wholesale prices at the project location and the buyer's location).
The financial case for PPAs is straightforward. In the US, corporate PPA prices averaged $45-65/MWh in 2025, compared to average commercial electricity rates of $78/MWh. A company with $10 million in annual electricity costs that signs a PPA at $50/MWh could save $1.5-3 million per year while locking in price certainty for a decade or more. The primary risk is long-term commitment: if wholesale electricity prices fall below the PPA price, the company is paying above-market rates (though still with price certainty).
Renewable Energy Certificates (RECs): RECs represent the environmental attributes of one megawatt-hour of renewable electricity. When a solar or wind farm generates electricity, it produces two products: the physical electricity (sold on the grid) and the RECs (sold separately). Companies purchase RECs to claim that their electricity consumption is matched by renewable generation somewhere on the grid. Unbundled REC prices in the US range from $1-5/MWh for standard compliance RECs to $15-40/MWh for voluntary market RECs with specific additionality criteria.
RECs are the simplest and cheapest mechanism for renewable energy claims, but they face increasing scrutiny. The Greenhouse Gas Protocol's Scope 2 guidance distinguishes between "market-based" accounting (using RECs) and "location-based" accounting (using grid average emissions). Investor and stakeholder pressure is pushing companies toward higher-quality procurement mechanisms (PPAs, on-site generation) rather than relying solely on unbundled RECs.
On-site solar: Rooftop and ground-mounted solar installations at company facilities provide the most direct form of renewable energy procurement. Commercial solar system costs in the US fell to $1.10-1.50/W installed in 2025, with payback periods of 4-7 years depending on electricity rates, available incentives, and solar resource quality. In states with high electricity rates (California, Massachusetts, Connecticut, Hawaii), payback periods can be under 4 years.
The practical limitation of on-site solar is scale. A typical commercial rooftop system of 100-500 kW can offset 20-60% of a facility's electricity consumption depending on energy intensity and roof area. Warehouses and distribution centers, with large flat roofs and moderate energy loads, often achieve the highest offset percentages. Manufacturing facilities with high energy intensity may cover a smaller share. On-site solar is typically supplemented with PPAs or RECs to reach 100% renewable targets.
Grid Modernization: The Bottleneck That Must Be Fixed
The renewable energy transition's biggest constraint is not technology cost or policy support. It is the electric grid. Power grids in most countries were built for a fundamentally different energy system — one with a small number of large, centralized power plants delivering one-way power flow to consumers. Renewable energy requires grids that handle distributed generation from millions of sources, manage variable output from solar and wind, accommodate bidirectional power flow, and transmit power over long distances from resource-rich areas to demand centers.
The scale of the challenge is illustrated by interconnection queues — the backlog of power projects waiting to connect to the grid. In the United States, the interconnection queue reached 2,600 GW of capacity in 2025, more than double the country's total installed generation capacity. The average wait time for a new renewable project to connect to the US grid exceeded 5 years. In Europe, grid connection delays are the primary bottleneck for offshore wind deployment. In Australia, curtailment of renewable generation (forced reduction in output because the grid cannot absorb it) reached record levels.
The IEA estimates that $600 billion per year in grid investment is needed through 2030 — approximately double current levels. Priority investments include HVDC (high-voltage direct current) transmission lines for long-distance power transport, which lose far less energy than conventional AC lines; smart inverters and grid-forming technology that allow renewable generation to provide the grid stability services traditionally provided by fossil fuel plants; distribution grid upgrades to handle rooftop solar, EV charging, and heat pumps at the neighborhood level; and digital grid management systems that use AI and real-time data to balance supply and demand across millions of distributed resources.
For businesses, grid constraints create both risks and opportunities. Risks include curtailment (your solar farm produces power but the grid cannot accept it), interconnection delays (your new facility cannot connect renewable generation on schedule), and transmission congestion (electricity prices vary dramatically by location within the same grid). Opportunities include behind-the-meter storage (which can reduce demand charges and provide backup power), demand response programs (which pay companies to reduce electricity consumption during peak periods), and virtual power plant participation (aggregating distributed resources to provide grid services for revenue).
The Emerging Technologies to Watch
Perovskite solar cells: Perovskite materials can be deposited as thin films on flexible substrates, potentially enabling solar panels that are lighter, cheaper, and more versatile than silicon. Oxford PV achieved a certified efficiency of 29.8% for a perovskite-silicon tandem cell in 2025 — exceeding the theoretical maximum for silicon alone (29.4%). Commercial production has begun at pilot scale. If manufacturing challenges are resolved, perovskite tandems could push solar panel efficiencies above 30% at costs below current silicon panels.
Floating offshore wind: Floating foundations allow wind turbines to be deployed in deep water (beyond 60 meters), vastly expanding available sites. The global floating wind pipeline exceeded 120 GW in 2025, with major projects under development off the coasts of Scotland, Norway, Portugal, Japan, South Korea, and the United States. Equinor's Hywind Tampen (88 MW) and Principle Power's WindFloat Atlantic (25 MW) have demonstrated commercial viability. Cost reductions are following the same learning curve as fixed-bottom offshore wind, with floating wind projected to reach cost parity with fixed-bottom by 2030.
Green hydrogen: Produced by splitting water using renewable electricity (electrolysis), green hydrogen can decarbonize industrial processes that cannot be directly electrified — steel production, ammonia manufacturing, long-haul shipping, and aviation. Electrolyzer costs have fallen 40% since 2020, and capacity additions are accelerating (over 2 GW installed globally in 2025). The EU, Australia, Chile, Saudi Arabia, and India all have national hydrogen strategies with production targets exceeding 50 million tonnes per year by 2030. The cost challenge remains: green hydrogen costs $3-6/kg in 2026, versus $1-2/kg for gray hydrogen (produced from natural gas). Achieving the $2/kg green hydrogen target requires continued electrolyzer cost reductions and access to very cheap renewable electricity ($0.015-0.025/kWh).
Vehicle-to-grid (V2G): Electric vehicles parked and connected to chargers can serve as distributed battery storage, discharging electricity back to the grid during peak demand. With global EV stock projected to reach 100 million by 2027, the aggregate battery capacity of parked EVs will exceed the total capacity of all grid-scale battery storage. V2G technology is commercially deployed in the UK (Octopus Energy's Powerloop), Japan (Nissan's LEAF-to-Home), and the Netherlands (several utility programs). The barrier to widespread adoption is bidirectional charging hardware (currently 5-10% more expensive than standard chargers) and utility interconnection standards, both of which are being addressed.
Building a Corporate Renewable Energy Strategy
For businesses approaching renewable energy procurement, the decision framework involves three key variables: cost reduction (how much will renewables save compared to current energy spending), sustainability targets (what commitments has the company made to investors, customers, and regulators), and risk management (how does renewable energy affect exposure to volatile fossil fuel prices).
Step 1: Baseline your energy use. Before procuring renewable energy, understand your current consumption patterns. Analyze 12 months of utility data for every facility — total consumption (kWh), peak demand (kW), time-of-use patterns, and current rates. Identify which facilities are best suited for on-site solar (large roof area, high electricity rates, favorable solar resource).
Step 2: Set targets and timeline. The RE100 initiative provides a credible framework for 100% renewable electricity commitments. Companies joining RE100 commit to sourcing 100% renewable electricity by a target date (most choose 2030 or 2035). Even without joining RE100, setting public targets with interim milestones (e.g., 50% by 2028, 100% by 2032) creates accountability and guides procurement decisions.
Step 3: Layer procurement mechanisms. The most cost-effective approach for most companies is a layered strategy. Deploy on-site solar at facilities where economics are favorable (this provides the most direct cost savings and resilience benefits). Sign one or more PPAs to cover the bulk of remaining electricity consumption (this locks in long-term price certainty). Purchase RECs for any residual gap (this provides flexibility as the company ramps up direct procurement). As battery storage economics improve, add storage to on-site installations to capture demand charge savings and provide backup power.
Step 4: Engage your value chain. Scope 3 emissions (from suppliers, logistics, and product use) typically represent 70-90% of a company's total carbon footprint. Engaging key suppliers on renewable energy procurement amplifies your impact and increasingly satisfies customer and investor expectations. The CDP Supply Chain program provides frameworks for supplier engagement on climate and energy.
Step 5: Monitor and report. Track progress against targets using recognized frameworks — GHG Protocol for emissions accounting, RE100 for renewable electricity tracking, CDP for investor disclosure. Annual reporting builds credibility and identifies areas where procurement strategy needs adjustment.
The Investment Field: Where Capital Is Flowing
The renewable energy sector offers investment opportunities across the full technology and deployment spectrum. Understanding where capital is flowing illuminates where the market sees the highest growth potential.
Utility-scale solar and wind remain the largest segments by dollar value, with over $490 billion invested in 2025. But the fastest-growing segments are battery storage (investment tripled between 2022 and 2025 to $65 billion), grid infrastructure ($130 billion), and green hydrogen ($12 billion, up from $2 billion in 2022). Venture capital investment in climate tech reached $34 billion in 2025, with energy storage, carbon capture, and next-generation solar receiving the largest shares.
Public equities exposure to renewable energy is available through indices like the S&P Global Clean Energy Index and the WilderHill Clean Energy Index, as well as thematic ETFs. Green bond issuance reached $620 billion in 2025, with renewable energy projects representing the largest use-of-proceeds category. For direct investment, community solar programs allow individuals and small businesses to subscribe to shared solar projects and receive bill credits — available in 22 US states and growing.
The renewable energy tipping point has arrived not because governments mandated it or activists demanded it, but because the economics became irresistible. Solar and wind now win on cost in open competition against century-old incumbent technologies. Battery storage is crossing the same cost thresholds that solar crossed a decade ago. The remaining challenges — grid modernization, permitting reform, supply chain diversification — are solvable with known engineering and policy tools. For businesses, the question is no longer whether to transition to renewable energy but how quickly and through which mechanisms. The companies that act first will capture the largest cost savings, the strongest competitive positioning, and the greatest resilience against the energy price volatility that will define the coming decade.
-01.svg "GGI main logo")
