The update | 20 April 2026
The IEA’s Global Energy Review 2026 reports that solar photovoltaic power accounted for more than a quarter of the increase in global energy supply during 2025. Solar was the largest contributor to that growth for the first time. Electricity demand rose by around 3%, while overall energy demand grew by 1.3%. These figures describe the world, not Nigeria alone. [3]
From supporting source to large-scale supply
Solar turns light into electricity without burning fuel at the panel. In its technology chapter, the IEA estimates that annual solar additions exceeded 600 GW in 2025 and cumulative capacity reached around 2,800 GW. Some annual deployment figures include estimates where complete data was unavailable. Installed capacity is a power rating; it is not the amount of electricity delivered through the year. [4]
Function and practical benefit
Panels produce DC electricity. An inverter can supply suitable AC loads, while a battery can shift some generation to later hours. For a workshop, dependable power can support computers, networking and selected tools. The usable benefit depends on load size, sunlight, storage, system losses and maintenance.
Statement from the source
“Electricity consumption is growing much faster than overall energy demand.” - Fatih Birol, IEA Executive Director, 20 April 2026. [3]
What the results establish
The IEA reports roughly 110 GW of new battery storage capacity in 2025. That supports the observation that storage is expanding alongside electrification. It does not establish the payback period of a particular shop installation. That calculation needs local equipment prices, tariffs, fuel expenditure and measured energy use. [3]
TANEVOR view
Begin with an energy audit. Identify essential loads, their running hours and starting demand. A router, laptop and lighting package may have a very different requirement from a soldering station, air conditioner or industrial motor. Compare offers on usable energy, protection, warranty and service support, as well as the headline inverter rating.
What readers should watch
A good proposal explains the assumptions and makes room for growth. Solar is an engineering system whose components must work together. TANEVOR’s Engineering service page remains Coming Soon in the supplied website plan; this article is educational content and does not announce a completed engineering installation or an active new service.
EXPLAINER
Power ratings are only part of the story
An inverter rating, a panel rating and a battery capacity describe different things. Understanding the difference helps a buyer ask useful questions and helps an engineer explain why a system will or will not meet a particular load.
Power versus energy
Power describes the rate at which equipment uses or produces energy. Energy describes how much is used over time. A hypothetical 60-watt laptop used for five hours consumes 300 watt-hours, or 0.3 kilowatt-hours, at that assumed constant draw. Real consumption varies with workload, charging and the equipment design.
Why starting demand matters
Some motors and other equipment need more power when starting than during steady operation. A system that handles normal running loads may still struggle at start-up. An assessment therefore considers the equipment type, starting behaviour and which loads may operate together. A simple sum of label ratings is not always sufficient.
What storage adds
A battery stores some energy for later use. Its nominal capacity is not necessarily the amount safely available at the AC outlet: operating limits, conversion losses and equipment settings matter. Solar generation also changes with conditions. The IEA’s global growth figures show market expansion; they do not replace a local system design. [3][4]
What a proposal should explain
Ask for the load assumptions, expected operating hours, usable storage assumptions, protective devices and maintenance plan. The proposal should show what is included and how future loads affect the design. Engineering content in this issue remains educational; TANEVOR’s supplied service-page plan is Coming Soon.
PRACTICAL GUIDE
A workshop energy example
This is a hypothetical planning example, not an installation specification. Consider a workshop using a laptop, a router and lighting. The first step is to estimate demand before comparing equipment packages.
Write down the assumptions
Assume a laptop draws 60 W for five hours, a router 15 W for eight hours and lighting 20 W for four hours. Their estimated daily energy is 300 Wh, 120 Wh and 80 Wh respectively. Together that is 500 Wh, or 0.5 kWh. If all three run together, their assumed steady demand is 95 W.
Identify what the example leaves out
This figure excludes inverter losses, battery charging losses, standby consumption, weather variability and reserve capacity. It also excludes soldering equipment, printers, cooling and any new load. Those omissions mean that a 500 Wh label cannot be treated as a complete purchasing specification. Measurements are preferable to estimates where practical.
Compare offers fairly
Ask each supplier to assess the same load list and intended operating hours. Compare the usable performance, included protection, warranty and access to service. If one proposal assumes much less daily use, its lower price may reflect a smaller requirement rather than a better value.
Check performance after commissioning
Record how long essential equipment runs, whether overloads occur and how the system behaves under ordinary use. Compare observations with the documented assumptions. If the shop adds heavier tools later, reassess the load. Good engineering connects the original requirement, the delivered system and the way it performs in service.
Sources & further reading
Research checked for this issue on 5 October 2026. Publication dates refer to the source; practical examples are labelled in the text.
- International Energy Agency
Global energy demand growth in 2025, led by solar and then gas ↗
20 April 2026 - International Energy Agency
Global Energy Review 2026: Technology - Solar PV and wind ↗
2026; reports 2025 data
Work photographs are representative examples of the activity described. They are not evidence of a specific TANEVOR, NVIDIA, FAO or BRIDGE project. Product photographs show the model identified in their captions.