Designing Stand-Alone Power Systems That Truly Build Network Resilience 

Why “Grid-Like” Matters as Networks Evolve 

Across Australia, DNSPs are making deliberate decisions to remove poles and wires in parts of the network and replace them with stand-alone power systems (SAPS). The drivers are clear: improving resilience in remote and high-risk areas, reducing exposure to bushfire and storm events, and delivering a more sustainable long-term cost outcome for the network and its customers. 

However, resilience is not achieved simply by changing the asset type. If SAPS are intended to replace the grid, then they must behave like the grid – particularly from the customer’s perspective. A system that supplies power, but limits how a customer can live, work, or invest in their property, risks undermining the very benefits SAPS are meant to deliver. 

For SAPS to genuinely support a resilient network, they must operate as closely as possible to a traditional grid connection. 

The Problem: Designing to the Past Instead of the Future 

Many SAPS deployments today are designed around historic and average load data for a specific site. While this approach may appear efficient at the outset, it can introduce long-term issues that affect both customers and DNSPs. 

Undersized systems 
Average-based sizing does not account for occasional but entirely reasonable high-load events. Customers may hire a welder, install a heat pump, run irrigation equipment, or use other high-powered appliances. When inverters have limited surge capacity, these normal activities can result in nuisance trips and outages. 

The outcome is predictable: 

• A tripped breaker or system shutdown 

• A frustrated customer 

• Calls and complaints directed back to the DNSP 

Limited surge capability 
Low surge tolerance means SAPS can struggle with short-duration loads that the grid would absorb without issue. From the customer’s point of view, this feels like a downgrade in service, even if average energy needs are technically being met. 

Lack of future flexibility 
Customer behaviour is changing. Electric vehicle ownership is increasing, and expectations around home charging are growing. When solar and storage are sized only for today’s usage, customers who later invest in EVs can find themselves constrained by an inflexible system. Expanding capacity often requires costly redesign or replacement, eroding the long-term value of the SAPS investment. 

The Solution: SAPS That Mimic the Grid 

At Valen Power, we believe SAPS should be designed to support the way people actually live—today and into the future. That means designing systems that mimic key characteristics of the grid, rather than simply meeting minimum energy requirements. 

High surge capability 
Valen SAPS are engineered to deliver up to 60A of surge protection. This allows customers to use high-powered equipment without unexpected interruptions, aligning performance more closely with a conventional grid connection. 

Designed for change, not just compliance 
Our systems are modular and scalable by design. Additional solar capacity can be added over time without the need to re-engineer the entire system. This makes it easier to accommodate evolving customer needs, including EV charging and electrification of appliances. 

Customer experience as a design input 
By focusing on grid-like performance, SAPS become an enabling asset rather than a limiting one. Customers are less likely to change their behaviour, avoid new technologies, or feel penalised for being off-grid. 

For DNSPs, this translates into fewer service calls, lower operational friction, and stronger community trust in SAPS programs. 

Conclusion: Resilience Should Never Mean Compromise 

Customers should not have to alter how they live because they have a stand-alone power system. Nor should they be left worse off for having a SAPS installed in place of a traditional grid connection. 

True resilience is achieved when SAPS deliver continuity, flexibility, and confidence—both for customers and for the network operators responsible for them. Designing SAPS that mimic the grid is not an over-specification; it is a practical, future-focused approach to long-term network performance. 

By prioritising surge capability, scalability, and real-world usage patterns, DNSPs can ensure SAPS fulfil their promise: resilient infrastructure that keeps communities connected, safe, and supported for the long term.