The global electrification shift: a decade of cause and consequence, 2015 to 2025.
In 2015, electric cars were a curiosity and grid batteries barely existed as a category. Ten years on, one in four new cars sold is electric and battery prices have fallen 93%. This is what actually caused that shift, and why it happened so unevenly around the world.
Five forces did the work: one coordination signal, one cost collapse, and three separate national playbooks.
The 2015 Paris Agreement didn't mandate electrification directly. Its function was a collective temperature target, well below 2°C with efforts toward 1.5°C, and a requirement that every signatory lodge a nationally determined contribution. The direct consequence was a wave of government modelling that showed transport and heat electrification as among the cheapest decarbonisation levers available, anchoring long-term industrial expectations that hadn't existed before. Before Paris, the world was tracking toward roughly 4°C of warming by 2100; a decade of policy responses to the Agreement shifted that to around 2.6°C (ECIU, Dec 2025, drawing on IPCC and IEA data). The Agreement didn't create the battery and solar cost reductions that actually drove electrification economics, those were already underway, but it gave manufacturers, investors and governments a shared reference frame that made long-term commitment to electric product lines less speculative.
The single most consequential physical factor was the continuous fall in lithium-ion battery pack prices. In constant 2024 US dollars: US$553/kWh in 2013, US$310 in 2015, US$153 in 2019, US$97 in 2023, and an estimated US$79 in 2024 (World Nuclear Report/BloombergNEF Figure 57; BloombergNEF Dec 2025). By 2023 that US$97/kWh figure was the first year battery vehicles reached cost parity with combustion vehicles in China. The 2025 nominal figure of US$108/kWh represents a 93% fall from 2010, driven by manufacturing scale, the chemistry shift from NMC to LFP, and structural overcapacity in Chinese cell production. Every subsidy, every charging network and every grid-scale storage project depended on batteries becoming commercially viable, and that viability arrived almost entirely through manufacturing learning and chemistry optimisation, not government mandate.
Chart data
| Series | Year | Value |
|---|---|---|
| Li-ion pack price (constant 2024 USD) | 2013 | 553 US$/kWh |
| Li-ion pack price (constant 2024 USD) | 2015 | 310 US$/kWh |
| Li-ion pack price (constant 2024 USD) | 2017 | 230 US$/kWh |
| Li-ion pack price (constant 2024 USD) | 2019 | 153 US$/kWh |
| Li-ion pack price (constant 2024 USD) | 2021 | 132 US$/kWh |
| Li-ion pack price (constant 2024 USD) | 2022 | 119 US$/kWh |
| Li-ion pack price (constant 2024 USD) | 2023 | 97 US$/kWh |
| Li-ion pack price (constant 2024 USD) | 2024 | 79 US$/kWh |
China entered the decade as an early EV policy experimenter and ended it as the dominant force in both EV production and battery manufacturing. Its NEV mandate took formal effect in April 2018, requiring manufacturers to meet rising annual NEV credit targets, 10% in 2019, 12% in 2020, tightening to 18% by 2023 (ICCT), backed by national purchase subsidies running 2015 to 2022 and city-level licence plate privileges in Beijing, Shanghai and other megacities. NEV sales grew from roughly 330,000 in 2015 to 12.8 million domestically in 2024, plus 2.6 million exported (Oxford Energy, Mar 2026). Within 48 hours of China signalling its long-term intent to phase out combustion engines, General Motors and Ford both announced major EV platform commitments (WRI). By 2024, close to 80% of the world's battery cells were made in Chinese factories, with Chinese firms holding over 85% of cathode and anode material supply.
The United States took a different path: the Inflation Reduction Act, passed August 2022, committed roughly US$369 billion to climate and clean energy provisions over ten years, the largest single public clean-energy investment in US history (Rhodium Group). Through mid-2024 it had catalysed approximately US$493 billion in actual business and consumer investment, a 71% increase over the comparable pre-IRA period. More than 3.4 million American families claimed US$8.4 billion in IRA clean-energy tax credits in 2023 alone. The IRA's EV provisions included a US$7,500 credit for new vehicles and US$4,000 for used ones, available at point of sale from 2024, though its domestic-content requirements reshaped battery supply chain geography as much as they drove adoption.
Europe took a third path again: fleet-average CO₂ standards requiring a 55% cut from 2021 levels by 2030 and a 100% cut, zero grams per kilometre, from 2035 (EU Regulation 2019/631). These standards imposed an existential product-mix requirement on any automaker manufacturing for the EU market: miss the fleet average and face significant per-car fines. Volkswagen, Stellantis, BMW and Renault all announced major EV platform transitions during 2019 to 2022 in direct response, independent of consumer incentives. Europe's public charging network passed 1 million charge points in 2024, a milestone specifically targeted in EU infrastructure policy.
The milestonesSolar crossed 10% of world electricity demand. Storage did in four years what solar took eight and wind took fifteen.
Annual EV sales exceeded 3 million for the first time in 2020, doubled to 6.75 million in 2021, passed 10 million in 2022, and reached 17 million (more than 20% of new car sales) in 2024 before hitting 20 million and a 25% share in 2025. Global cumulative solar went from 181 GW in 2015 to 628 GW in 2020 to 2.25 TW by end-2024, with a further roughly 600 GW added in 2025 alone, pushing solar past 10% of world electricity demand. At least 34 countries added more than 1 GW of solar in a single year by 2024.
Chart data
| Series | Year | Value |
|---|---|---|
| Annual global EV sales | 2020 | 3.2M |
| Annual global EV sales | 2021 | 6.75M |
| Annual global EV sales | 2022 | 10.5M |
| Annual global EV sales | 2023 | 14M |
| Annual global EV sales | 2024 | 17M |
| Annual global EV sales | 2025 | 20M |
Grid-scale battery storage is the standout case: annual additions grew from negligible in 2015 to 44 GW/96 GWh in 2023 to 112 GW/307 GWh in 2025, a "100 GW era" that took storage four years to reach from a 10 GW annual base, against eight years for solar and fifteen for wind (BloombergNEF, May 2026). LFP chemistry reached roughly 90% of new grid-scale installations by 2025. Global public EV charging infrastructure grew from about 7,395 points in 2015 to over 5.3 million by end-2024 and more than 7 million by end-2025, adding 1.8 million points in 2025 alone, a 33% year-on-year jump, with China alone accounting for 65% of that global network.
Where it happenedChina led on every volume metric. Europe led on policy design. The US led on storage, not EVs. And the fastest-growing fronts by 2025 were the ones nobody was modelling closely in 2015.
China accounted for roughly half or more of annual global EV sales through most of the decade, and by 2025 its 13 million domestic EV sales were 60% of global volume at a 55% domestic market share. It added 357.3 GW of solar in 2024 alone, nearly 60% of that year's entire global addition, and installed 167 GWh of new battery storage in 2025, more than half the world total. What distinguishes China's contribution from sheer scale is vertical integration: its manufacturers control the battery supply chain from cathode material through cell and pack assembly, a cost advantage no non-Chinese competitor matched through the 2020s.
Europe ran a policy-led transition with a genuine outlier inside it: Norway, where VAT exemption, road-tax advantages and a dense charging network produced 95.9% of all new car registrations electric in 2025, reaching roughly 98% in December that year, a decade ahead of the European average and more than fifteen years ahead of the United States on the same trajectory basis. Europe as a whole sold over 4 million EVs in 2025, up more than 30% year on year, for a 28% market share. The EU installed 27.1 GWh of new battery storage in 2025 (a twelfth consecutive year of record growth) and 62.6 GW of solar in 2024, holding about 17% of world cumulative PV capacity.
The United States tells a split story: EV market share stayed below 10% in 2025, versus China's 55% and Europe's 28%, the absence of a mandate-style policy being the clearest structural explanation. But battery storage deployment grew fast under the IRA: 18.9 GW/51 GWh installed in 2025, a national record and 52% up year on year, with roughly 890 GW sitting in US interconnection queues by mid-2025, the largest single resource category ahead of every other generation technology. Solar added 47.1 GW in 2024 to reach 224.1 GW cumulative, the world's second-largest market by installed base.
India ran the decade's most dramatic solar expansion: from roughly 3 GW in 2014 to 94 GW by end-2024, crossing 100 GW in January 2025 and reaching 132 GW by November 2025, a forty-fold increase in about a decade, adding 37.9 GW in 2025 alone (up 54.7% year on year) and for the first time outpacing US annual solar additions. Total renewable capacity reached 253.96 GW by November 2025, with non-fossil generation crossing half of the country's 500 GW total installed base. EV sales across all vehicle categories exceeded 2.27 million in 2025, an 8% share dominated by two- and three-wheelers.
Southeast Asia arrived late and then moved faster than most models expected: Indonesia's EV market grew 49% in 2025 after VAT on locally made EVs was cut from 11% to 1%; Thailand's EV sales jumped 80%. By year-end the region had more than doubled its annual EV sales to a nearly 20% share, overtaking the United States' penetration rate. Pakistan entered the global top five solar markets in 2024, adding roughly 17 GW, more than thirteen times its 2023 volume, driven by unmet grid demand pushing households toward off-grid and hybrid solar. The common thread: Chinese EV and solar manufacturers had, by 2024, reached price points accessible in markets where purchasing power had previously excluded mass electrification.
Latin America and Africa/the Middle East close the picture on two very different tracks. Brazil entered the decade already running the most electrified grid of any large economy, hydro rather than fossil-based, then added 243.9 GW of total renewable capacity by end-2024 and 14.3 GW of solar in 2024 alone. Regional EV sales reached roughly 350,000 in 2025 (up 55%), with Brazil opening 2026 at a 9.8% EV market share. Chile ranked among the five largest global battery storage markets. Africa's relationship to the decade is structurally different again: the primary question for most of the continent was energy access, not energy transition. Off-grid solar connected roughly 86 million people by 2025, while the continent's entire grid-connected solar base, about 21 GW in 2024, was a volume China alone surpassed in under five months of 2025. Saudi Arabia became the world's third-largest BESS market in 2025 on the back of grid modernisation and high-irradiance solar-storage economics.
The systemic connectionThis is the demand context every panel, battery and inverter on this benchmark was deployed into.
The relationship between this decade's macro shift and the specific product-class evolution documented elsewhere on review.solar runs in both directions. EV battery demand grew past 950 GWh in 2024, with electric cars alone over 85% of that figure. The manufacturing scale that drove down EV pack costs is the same scale that made grid-scale stationary storage economically viable in the first place, and stationary deployment then fed back into cell chemistry and pack architecture improvements, the same LFP-over-NMC shift traced in our lithium-ion decade piece. Solar deployment created the variable, daytime-concentrated generation profile that made both residential and grid-scale storage necessary in the first place: the same duck-curve dynamic that shows up, at different scales, in South Australia, California, Germany and China. The inverter's shift from passive converter to grid-interactive device, covered in our inverter decade piece, was a direct response to exactly these system conditions. None of that evolution happens without the demand this piece traces.
My readThe decade didn't happen because of one policy. It happened because five different playbooks all pointed the same direction at once.
What strikes me reading this record end to end is how little of it depended on any single lever. China ran an industrial mandate. Europe ran a fleet-emissions regulation. The US ran a tax credit. None of those alone explains a 93% battery cost collapse or a forty-fold Indian solar expansion, because the underlying cost curve was doing most of the real work, and government policy mostly decided how fast a given market could capture it once it arrived. By 2025 the geography was still deeply uneven: China, Europe and the US accounted for roughly 95% of EV sales in 2024, while Africa remained on an access frontier rather than a transition one. But the fastest-moving fronts, India, Southeast Asia, Latin America, weren't the ones any 2015-era model had centred. That's the actual lesson for reading the next decade's projections: the leapfrog markets tend to outrun the models built from developed-market analogies, and the constraint that matters most, battery and panel cost, keeps falling faster than the policy conversation assumes it will.
Where a figure is a published third-party projection or a national statistics release, it is reported as such and not treated as review.solar's own analysis.
Sources24 references
- IEA: Global EV Outlook 2024
- Zero Carbon Analytics: Utility-scale battery installations surge as prices decline (Nov 2025)
- IEA-PVPS: Snapshot of Global PV Markets 2025
- IEA Global EV Outlook 2026 (via Virta)
- BloombergNEF: Energy storage enters the 100 GW era (May 2026)
- BloombergNEF: Lithium-ion battery pack prices fall to $108/kWh (Dec 2025)
- World Nuclear Report / BloombergNEF: Figure 57, battery price series
- Energy Storage News: Li-ion pack prices, BNEF (Dec 2025)
- ECIU: Ten years post-Paris (Dec 2025)
- ICCT: China NEV mandate policy update (2018)
- Oxford Energy: China NEV update (Mar 2026)
- World Resources Institute: How China raised the stakes on EVs
- Rhodium Group: Climate and clean energy provisions of the IRA
- Clean Investment Monitor: Two-year impact of the IRA
- IIGCC: EU CO₂ emission performance standards briefing (Apr 2025)
- Wikipedia / IEA: Electric car use by country
- Reuters / OFV: Norway's new car sales were 96% electric (Jan 2026)
- Energy Industry Review: Battery storage capacity, record growth and trends (Apr 2026)
- Analysis Atlas: Energy storage grid battery market (Jun 2026)
- India PIB: Solar capacity press release (Nov 2025)
- Ember: The EV leapfrog: how emerging markets are driving a global EV boom (Dec 2025)
- Energy Transition Africa: Africa's off-grid solar gap (May 2026)
- Argus Media / IEA: Global battery demand rises close to 1 TWh in 2024 (May 2025)
- Statista / IEA: Global EV unit sales and market share
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