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<div class="hg-rb">
<section id="wa-scheme">
<h2>WA Residential Battery Scheme</h2>
<p>The WA government scheme, which commenced 1 July 2025, pays a rebate on the usable capacity of your battery. <strong>VPP enrolment is mandatory</strong> — without it, the WA rebate is $0.</p>
<div class="hg-scheme-box">
<strong>Synergy customers (Perth metro / South West Interconnected System)</strong>
<ul>
<li>$130 per kWh of usable capacity</li>
<li>Maximum rebate: $1,300 (for batteries of 10 kWh usable or above)</li>
<li>Minimum battery size: 5.0 kWh usable</li>
<li>Must enrol in Synergy Battery Rewards VPP (or approved alternative)</li>
<li>Zero-interest loan also available: $2,001–$10,000, 3–10 years, household income under $210,000</li>
</ul>
</div>
<div class="hg-scheme-box">
<strong>Horizon Power customers (regional and remote WA)</strong>
<ul>
<li>$380 per kWh of usable capacity</li>
<li>Maximum rebate: $3,800 (for batteries of 10 kWh usable or above)</li>
<li>Minimum battery size: 5.0 kWh usable</li>
<li>Must enrol in Horizon Power VPP or approved alternative</li>
</ul>
</div>
<p>The battery and inverter must be on the utility's Supported Solution List and CEC approved lists. One rebate per property. The property must be a WA standalone or unit-titled home with an internet connection.</p>
</section>
<section id="federal-chbp">
<h2>Federal Cheaper Home Batteries Program (CHBP)</h2>
<p>The federal program is delivered through the Small-scale Renewable Energy Scheme as battery STCs — applied as an upfront discount by your installer. <strong>VPP membership is not required for the federal discount.</strong></p>
<h3>How the STC discount is calculated</h3>
<p>Battery STCs = factor × (usable kWh in each tier):</p>
<ul>
<li>0–14 kWh: 100% of base STC rate</li>
<li>14–28 kWh: 60%</li>
<li>28–50 kWh: 15%</li>
<li>Above 50 kWh usable: no support</li>
</ul>
<p>Battery must be CEC-approved and VPP-capable (capability, not membership).</p>
<h3>Factor schedule (steps down every 6 months)</h3>
<table>
<thead><tr><th>Period</th><th>Factor</th></tr></thead>
<tbody>
<tr><td>1 May – 31 Dec 2026</td><td><strong>6.8</strong> (current)</td></tr>
<tr><td>Jan – Jun 2027</td><td>5.7</td></tr>
<tr><td>Jul – Dec 2027</td><td>5.2</td></tr>
<tr><td>Jan – Jun 2028</td><td>4.6</td></tr>
<tr><td>Jul – Dec 2028</td><td>4.1</td></tr>
<tr><td>2029–2030</td><td>3.6 → 2.1</td></tr>
</tbody>
</table>
<p class="hg-note">The STC price is market-set. The indicative rate used here is about $38 per STC (November 2026). Your installer confirms the final discount on your quote.</p>
</section>
<section id="how-they-stack">
<h2>How the Schemes Stack: A Worked Example</h2>
<p>A Synergy customer installing a 10 kWh usable battery with VPP enrolment in November 2026:</p>
<ul>
<li><strong>WA scheme:</strong> 10 kWh × $130 = $1,300</li>
<li><strong>Federal CHBP (STCs):</strong> 6.8 × 10 kWh = 68 STCs × ~$38 = ~$2,584 indicative</li>
<li><strong>Indicative total off invoice: ~$3,884</strong></li>
</ul>
<p>Both discounts are applied upfront by the installer. The WA loan ($2,001–$10,000 at 0% interest) can cover the remaining out-of-pocket cost, subject to income eligibility.</p>
</section>
<section id="calculator">
<h2>Battery Rebate Calculator</h2>
<p>Enter your battery details to see an estimate. Figures are based on official rates verified 5 November 2026.</p>
<div class="hg-calc-wrap">
<div class="hg-calc-row">
<div>
<label for="rc-kwh">Usable battery capacity (kWh)</label>
<input type="number" id="rc-kwh" min="1" max="100" step="0.5" placeholder="e.g. 10">
</div>
<div>
<label for="rc-retailer">Your electricity retailer</label>
<select id="rc-retailer">
<option value="synergy">Synergy (Perth metro / SWIS)</option>
<option value="horizon">Horizon Power (regional WA)</option>
</select>
</div>
</div>
<div>
<label for="rc-vpp">Will you join an approved VPP?</label>
<select id="rc-vpp">
<option value="yes">Yes — Synergy Battery Rewards or approved alternative</option>
<option value="no">No / not sure</option>
</select>
</div>
<div id="rc-results"><p style="color:#666">Enter your battery size above to see your estimate.</p></div>
</div>
<script>
(function(){
'use strict';
var STC_PRICE=38,FACTOR=6.8;
var WARBS={synergy:{per_kwh:130,max:1300,max_kwh:10,min_kwh:5},horizon:{per_kwh:380,max:3800,max_kwh:10,min_kwh:5}};
function calcCHBP(k){
if(k>50)return{stcs:null,note:'No federal CHBP support above 50 kWh usable.'};
var s=0;
s+=Math.min(k,14)*1;
s+=Math.max(0,Math.min(k,28)-14)*0.6;
s+=Math.max(0,Math.min(k,50)-28)*0.15;
s=Math.round(s*FACTOR*100)/100;
return{stcs:s,dollars:Math.round(s*STC_PRICE),note:'Factor '+FACTOR+' (1 May–31 Dec 2026). Factor drops to 5.7 from 1 Jan 2027. STC price indicative ~$'+STC_PRICE+'/STC as at November 2026.'};
}
function calcWARBS(k,retailer,vpp){
if(!vpp)return{amount:0,note:'The WA rebate requires joining an approved VPP.'};
var r=WARBS[retailer];
if(k<r.min_kwh)return{amount:0,note:'Battery usable capacity must be at least '+r.min_kwh+' kWh for the WA rebate. Federal CHBP still applies.'};
var eligible=Math.min(k,r.max_kwh);
var amt=Math.round(eligible*r.per_kwh);
return{amount:amt,note:k>r.max_kwh?'Capped at '+r.max_kwh+' kWh (maximum rebate applies)':''};
}
function fmt(n){return n.toLocaleString('en-AU');}
function update(){
var k=parseFloat(document.getElementById('rc-kwh').value);
var retailer=document.getElementById('rc-retailer').value;
var vpp=document.getElementById('rc-vpp').value==='yes';
var el=document.getElementById('rc-results');
if(!k||k<=0){el.innerHTML='<p style="color:#666">Enter your battery size above to see your estimate.</p>';return;}
var w=calcWARBS(k,retailer,vpp);
var c=calcCHBP(k);
var total=w.amount+(c.dollars||0);
var h='<div class="hg-result-box">';
h+='<div class="hg-result-line"><span>WA Battery Scheme rebate:</span><strong>$'+fmt(w.amount)+'</strong></div>';
if(w.note)h+='<p class="hg-result-note">'+w.note+'</p>';
if(c.stcs!==null){
h+='<div class="hg-result-line"><span>Federal CHBP (indicative):</span><strong>$'+fmt(c.dollars)+'</strong> ('+c.stcs+' STCs)</div>';
}else{
h+='<div class="hg-result-line"><span>Federal CHBP:</span><span>'+c.note+'</span></div>';
}
h+='<div class="hg-result-total"><span>Indicative total reduction:</span><strong>$'+fmt(total)+'</strong></div>';
h+='<p class="hg-result-note">'+c.note+'</p>';
h+='<p class="hg-result-disclaimer">Estimate only. Your installer confirms the final figures. Based on official rates verified 5 November 2026. <a href="/contact-us/">Get a quote</a> to confirm your exact rebate.</p>';
h+='</div>';
el.innerHTML=h;
}
document.addEventListener('DOMContentLoaded',function(){
['rc-kwh','rc-retailer','rc-vpp'].forEach(function(id){
var el=document.getElementById(id);
if(!el)return;
el.addEventListener('change',update);
if(el.tagName==='INPUT')el.addEventListener('input',update);
});
});
})();
</script>
</section>
<section id="how-to-claim">
<h2>How to Claim — Your Installer Does the Work</h2>
<p>Both the WA scheme and the CHBP are applied before you pay, not as a rebate you chase afterwards:</p>
<ul>
<li><strong>Federal CHBP (STCs):</strong> Your CEC-accredited installer assigns the battery STCs to a registered agent, who pays your installer. The discount appears as a line item on your invoice. You don't fill in forms.</li>
<li><strong>WA Residential Battery Scheme:</strong> Your installer lodges the application with Synergy (or Horizon Power). Once approved, the rebate is credited to your account or applied to your invoice. You need to enrol in the VPP before the rebate is paid.</li>
</ul>
<p>Ask your installer to confirm both rebates are included in your quote before you sign.</p>
</section>
<section id="payback-with-debs">
<h2>Battery Payback with DEBS and VPP Credits</h2>
<p>Beyond the upfront rebates, two ongoing income streams can reduce payback time:</p>
<ul>
<li><strong>DEBS (Distributed Energy Buyback Scheme):</strong> Synergy pays 10 c/kWh for solar exports during peak hours (3–9 pm) and 2 c/kWh off-peak. A battery can time exports to maximise peak exports.</li>
<li><strong>Synergy Battery Rewards (VPP):</strong> You earn 70 c/kWh for energy dispatched during demand events (up to 30 events/year). This directly offsets the ongoing cost of the battery.</li>
</ul>
<p>Running the full payback calculation depends on your usage, system size, and tariff. The <a href="/services/battery-storage/">Battery Storage</a> page has more on what to expect from a battery in Perth.</p>
</section>
<section id="common-mistakes">
<h2>Common Mistakes to Avoid</h2>
<ul>
<li><strong>Assuming VPP is optional for the state rebate:</strong> It isn't. Without VPP enrolment, the WA rebate is $0 regardless of battery size.</li>
<li><strong>Confusing nominal and usable kWh:</strong> Both schemes calculate on <em>usable</em> capacity. A 13.5 kWh nominal battery may have 11–12 kWh usable. Confirm usable capacity with your installer.</li>
<li><strong>Waiting too long for the federal discount:</strong> The CHBP factor drops every six months. The current 6.8 factor is the highest available; it drops to 5.7 on 1 January 2027.</li>
<li><strong>Not checking the Supported Solution List:</strong> Both WA scheme and CEC approval are required. Your installer should confirm eligibility before quoting.</li>
</ul>
</section>
<p class="hg-sources">Figures verified 5 November 2026. Official sources:
<a href="https://www.wa.gov.au/system/files/2026-05/wa_residential_battery_scheme_requirements_217409.pdf" rel="noopener" target="_blank">WA Residential Battery Scheme Requirements (Jan 2026)</a> ·
<a href="https://cer.gov.au/news-and-media/media/2026/march/battery-rebates-are-changing-1-may-2026" rel="noopener" target="_blank">Clean Energy Regulator: Battery Rebates Are Changing</a> ·
<a href="https://www.legislation.gov.au/F2026L00093/asmade/2026-02-09/text/original/epub/OEBPS/document_1/document_1.html" rel="noopener" target="_blank">Federal Register of Legislation F2026L00093</a>
</p>
</div>
