When battery capacity falls below what your contract needs, the risks are real: shortfall penalties, lost revenue, higher gas turbine fuel use to fill the gap and a scramble to add batteries in a plant that has no space or cabling for them. That means delay, lost margin and costly retrofits.
USP&E Helps You Plan for Battery Fade from Day One
We know you want a plant that meets its contract every year, not just at handover. USP&E has delivered 150+ power projects in 45+ countries, with 25,000 MW contracted since 2002, and our engineers and project managers design, build and run hybrid solar, battery and gas turbine plants. Our systems are ISO 9001 and ISO 45001 certified, and every deal runs under FCPA and OFAC controls. USP&E is a full-service EPC and O&M contractor, not a broker.
You do not need to oversize the battery at the start. You need a capacity target for the whole life, a model of fade, space and connections for added batteries, and gas turbine firming that covers the gaps.
Set the Target and Model the Fade
Agree the battery capacity the plant must hold through its life, based on your contract and the role of the battery in the plant. Then model how capacity falls with cycling, temperature and depth of discharge, using the battery supplier’s data and your expected operating pattern.
Plot the model against the target. The years where capacity falls short are your augmentation points. Some projects add batteries in a few steps over the life; others oversize at the start. Augmentation usually costs less over the life, because battery prices and technology may change, but it needs planning from day one.
Include the gas turbine units in the model. Firming can cover some shortfall, at the cost of fuel. Compare the cost of firming against the cost of adding batteries for each year. Our solar, battery and turbine hybrids work runs this comparison for each plant.
Leave Space and Connections for Added Batteries
Reserve space for added battery containers near the existing battery yard, with access for delivery and cranes. Plan foundations, cable routes, drainage and fire spacing for the extra containers, so they can be added without disturbing the running plant.
Size switchgear, transformers and inverters with room for augmentation, or plan how extra inverters will connect. Check the grid connection and the plant controller can handle the larger battery. Check that new batteries can work alongside the older ones, because mixing ages and chemistries needs careful control.
Plan fire protection and safety for the added batteries from the start. Rules for battery spacing and fire protection may change during the plant’s life, so leave margin.
Set Contract Terms and Review Every Year
Set augmentation terms in the supply and O&M contracts: who monitors capacity, who decides when to augment, who supplies and installs the new batteries, and how warranties apply to mixed fleets. Clear terms avoid disputes when the first augmentation falls due. Our long-term plant O&M includes capacity tracking for this reason.
Review real battery data every year against the model, and adjust the augmentation plan. Fade may be faster or slower than expected depending on how the plant runs. For mine sites, see our solar hybrids for mines page, and our sister site covers renewable EPC with gas turbine firming.
Your firming may come from gas turbine generators, used/new gas turbines, a remanufactured GE Frame 6B or natural gas engines/stations. Data centre campuses pair batteries with AI gas turbines, hyperscale generators and gas turbines for compute under hyperscale EPC/O&M, and New USP&E FX-45 45MW Modular Gas Turbine for the Hyperscale Data Center sector in the USA can firm supply as batteries age.
USP&E Offices Serving Solar EPC Buyers
You should not have to explain your load profile three times. For your solar EPC and gas firming project, USP&E links one accountable team across its offices, starting in the US: Colorado Springs (1755 Telstar Dr, Suite 300) and Knoxville (800 S Gay St, Suite 700) for US-side engineering, site walks and equipment follow-up.
London (162-168 Regent Street) sets up commercial structure and finance, Johannesburg (22 Kildoon Rd, Bryanston) leads design, project controls and quality for PV blocks, natural gas engine firming and GT bridges, Cape Town (31 Brickfield Road, Woodstock) adds engineering depth, and Wuxi, China (No. 1, Ningzhou Road, Wuxi) expedites switchgear, transformers and balance-of-plant from Chinese manufacturers.
For hybrid battery planning, Colorado Springs and Knoxville engineers model fade for US plants, while Johannesburg and Cape Town support African sites and Wuxi follows up battery containers made in China. Regions served: USA | AFRICA | UK | UAE | CHINA. With 25,000 MW contracted since 2002 across 150+ power projects in 45+ countries, USP&E is ISO 9001 and ISO 45001 certified.
What USP&E Has Delivered for Solar EPC Buyers
You want proof that USP&E can deliver hybrid and gas turbine projects. These projects show that record.
- USP&E has refurbished seven GE Frame 6B gas turbines to zero hours in-house for major US hyperscale data-centre developers.
- NEOM, Saudi Arabia: USP&E supplied three zero-hour Siemens SGT-400 gas turbines as the single technical and commercial interface, and the client reported savings of over $10 million. Read the case study.
- Perenco, Guatemala: USP&E delivered a 13.1 MW HFO/diesel modular power station under full EPC in under five months, on time and on budget. Read the case study.
HowTo: Plan Battery Augmentation for a Solar and GT Plant
Your 3-step plan: 1. Share your contract target, battery data and plant layout. 2. Receive a fade model with augmentation points and provisions. 3. Build, run and augment the plant with one accountable team.
- Agree the battery capacity the plant must hold through its life.
- Model battery fade and the years when capacity falls short.
- Leave space, cabling and switchgear room for added batteries.
- Set augmentation terms in the supply and O&M contracts.
- Plan how the gas turbine units cover shortfalls before augmentation.
- Review real battery data every year and adjust the plan.
Resources and live pathway
Data centres · EPC · O&M · About USP&E · Contact.
FAQ: Solar EPC Battery Augmentation Planning with GT
What is battery augmentation in a solar plus storage plant?
USP&E describes augmentation as adding battery capacity during the plant’s life to make up for fade. Batteries lose capacity as they cycle and age, so augmentation keeps the plant meeting its contract without oversizing the battery at the start. It is planned from day one.
When should batteries be added to a solar plant?
USP&E models capacity fade against the contract target. The years where capacity falls short are the augmentation points. Real battery data is reviewed every year and the plan adjusted, because fade depends on how the plant actually runs. Contract terms should match the plan.
What provisions does a plant need for augmentation?
USP&E reserves space, foundations, cable routes, drainage and fire spacing for added containers, and sizes switchgear, transformers and inverters with room to grow. The grid connection and plant controller must also handle the larger battery. Fire protection for the added batteries should be planned at the start too.
Can gas turbine firming replace battery augmentation?
USP&E finds firming can cover some shortfall, at the cost of fuel. The right answer compares firming cost against augmentation cost for each year. Many plants use both, with turbines covering gaps until the next augmentation step. The model shows which mix costs less over the life.
Where are USP&E’s offices for hybrid solar projects?
USP&E supports US hybrid solar projects from Colorado Springs and Knoxville. Johannesburg and Cape Town lead African hybrid work, London supports contracts and finance, and Wuxi follows up battery containers, inverters and other equipment made in China. Each team supports your plant from design to O&M.
Has USP&E delivered hybrid and gas turbine projects before?
USP&E has refurbished seven GE Frame 6B gas turbines to zero hours in-house for major US hyperscale data-centre developers. Public case studies include zero-hour Siemens SGT-400 turbines for NEOM and a modular power station for Perenco in Guatemala. Each needed careful planning and coordination.
Is USP&E a broker for solar and battery plants?
USP&E is not a broker. USP&E designs, builds and runs hybrid plants with its own engineers, so the team that models battery fade is the same team that installs the batteries and tracks their capacity over the plant’s life. You get one accountable team.
How fast can USP&E model battery fade for my plant?
USP&E can start as soon as you share your contract target, battery data and operating plan. Engineers show the likely augmentation points first, so provisions can be added to the design before construction makes them costly. Early modelling also helps you compare battery suppliers on life cost, not just price.
Meet Your Contract Every Year
Plan augmentation from day one and your plant meets its target year after year. Ignore battery fade and the shortfall arrives with penalties attached. USP&E will help you plan, build and augment with confidence.
Talk to an engineer about your solar EPC and gas firming project: use the USP&E contact page, call +27 10 822 2324 or email info@uspeglobal.com. You can also search the USP&E inventory for equipment that fits.
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